diff --git a/README.md b/README.md index f097d3ebd2..26e40da9cd 100644 --- a/README.md +++ b/README.md @@ -223,10 +223,12 @@ Join our discord community via [this invite link](https://discord.gg/bxgXW8jJGh) | [runners\_scale\_up\_lambda\_memory\_size](#input\_runners\_scale\_up\_lambda\_memory\_size) | Memory size limit in MB for scale-up lambda. | `number` | `512` | no | | [runners\_scale\_up\_lambda\_timeout](#input\_runners\_scale\_up\_lambda\_timeout) | Time out for the scale up lambda in seconds. | `number` | `30` | no | | [runners\_ssm\_housekeeper](#input\_runners\_ssm\_housekeeper) | Configuration for the SSM housekeeper lambda. This lambda deletes token / JIT config from SSM.

`schedule_expression`: is used to configure the schedule for the lambda.
`enabled`: enable or disable the lambda trigger via the EventBridge.
`lambda_memory_size`: lambda memory size limit.
`lambda_timeout`: timeout for the lambda in seconds.
`config`: configuration for the lambda function. Token path will be read by default from the module. |
object({
schedule_expression = optional(string, "rate(1 day)")
enabled = optional(bool, true)
lambda_memory_size = optional(number, 512)
lambda_timeout = optional(number, 60)
config = object({
tokenPath = optional(string)
minimumDaysOld = optional(number, 1)
dryRun = optional(bool, false)
})
})
|
{
"config": {}
}
| no | +| [scale\_down\_idle\_confirmation\_seconds](#input\_scale\_down\_idle\_confirmation\_seconds) | Number of seconds a runner must consistently report not-busy before scale-down terminates it. GitHub's busy flag can be stale (it can read false for a runner that is actively executing a job), so a single not-busy reading is not sufficient evidence a runner is idle. Set to at least one scale-down schedule interval to require two consecutive not-busy evaluations; a busy reading resets the window. 0 keeps the previous single-reading behaviour. | `number` | `0` | no | | [scale\_down\_schedule\_expression](#input\_scale\_down\_schedule\_expression) | Scheduler expression to check every x for scale down. | `string` | `"cron(*/5 * * * ? *)"` | no | | [scale\_errors](#input\_scale\_errors) | List of AWS error codes that should trigger retry during scale up. This list replaces the module default scale-up retry errors | `list(string)` |
[
"UnfulfillableCapacity",
"MaxSpotInstanceCountExceeded",
"TargetCapacityLimitExceededException",
"RequestLimitExceeded",
"ResourceLimitExceeded",
"MaxSpotInstanceCountExceeded",
"MaxSpotFleetRequestCountExceeded",
"InsufficientInstanceCapacity",
"InsufficientCapacityOnHost"
]
| no | | [scale\_up\_reserved\_concurrent\_executions](#input\_scale\_up\_reserved\_concurrent\_executions) | Amount of reserved concurrent executions for the scale-up lambda function. A value of 0 disables lambda from being triggered and -1 removes any concurrency limitations. | `number` | `1` | no | | [ssm\_paths](#input\_ssm\_paths) | The root path used in SSM to store configuration and secrets. |
object({
root = optional(string, "github-action-runners")
app = optional(string, "app")
runners = optional(string, "runners")
webhook = optional(string, "webhook")
use_prefix = optional(bool, true)
})
| `{}` | no | +| [ssm\_token\_ttl\_seconds](#input\_ssm\_token\_ttl\_seconds) | Optional TTL in seconds for the SSM parameters holding the runner registration token / JIT config. When set, the parameters are created with an SSM expiration policy so SSM deletes them itself after the TTL passes. Requires the Advanced parameter tier for every token parameter, which incurs additional costs. Expiration is enforced asynchronously by SSM; the SSM housekeeper lambda remains as a backstop. Must be a positive number, and should comfortably exceed the runner boot time so the config does not expire before the instance reads it. | `number` | `null` | no | | [state\_event\_rule\_binaries\_syncer](#input\_state\_event\_rule\_binaries\_syncer) | Option to disable EventBridge Lambda trigger for the binary syncer, useful to stop automatic updates of binary distribution | `string` | `"ENABLED"` | no | | [subnet\_ids](#input\_subnet\_ids) | List of subnets in which the action runner instances will be launched. The subnets need to exist in the configured VPC (`vpc_id`), and must reside in different availability zones (see https://github.com/github-aws-runners/terraform-aws-github-runner/issues/2904) | `list(string)` | n/a | yes | | [syncer\_lambda\_s3\_key](#input\_syncer\_lambda\_s3\_key) | S3 key for syncer lambda function. Required if using an S3 bucket to specify lambdas. | `string` | `null` | no | diff --git a/docs/configuration.md b/docs/configuration.md index 4948229c27..a4cd96e0b6 100644 --- a/docs/configuration.md +++ b/docs/configuration.md @@ -17,7 +17,7 @@ To be able to support a number of use-cases, the module has quite a lot of confi ## AWS SSM Parameters -The module uses the AWS System Manager Parameter Store to store configuration for the runners, as well as registration tokens and secrets for the Lambdas. Paths for the parameters can be configured via the variable `ssm_paths`. The location of the configuration parameters is retrieved by the runners via the instance tag `ghr:ssm_config_path`. The following default paths will be used. Tokens or JIT config stored in the token path will be deleted after retrieval by instance, data not deleted after a day will be deleted by a SSM housekeeper lambda. +The module uses the AWS System Manager Parameter Store to store configuration for the runners, as well as registration tokens and secrets for the Lambdas. Paths for the parameters can be configured via the variable `ssm_paths`. The location of the configuration parameters is retrieved by the runners via the instance tag `ghr:ssm_config_path`. The following default paths will be used. Tokens or JIT config stored in the token path will be deleted after retrieval by instance, data not deleted after a day will be deleted by a SSM housekeeper lambda. Alternatively you can set `ssm_token_ttl_seconds` to attach a native SSM expiration policy to the token / JIT config parameters so SSM deletes leftovers itself after the TTL passes. Be aware that parameter policies require the Advanced parameter tier for every token parameter, which incurs additional costs, and that expiration is enforced asynchronously by SSM. The housekeeper lambda remains active as a backstop. Furthermore, to accommodate larger JIT configurations or other stored values, the module implements automatic tier selection for SSM parameters: diff --git a/lambdas/functions/control-plane/src/scale-runners/scale-up.test.ts b/lambdas/functions/control-plane/src/scale-runners/scale-up.test.ts index 664bac60fb..87026eabaf 100644 --- a/lambdas/functions/control-plane/src/scale-runners/scale-up.test.ts +++ b/lambdas/functions/control-plane/src/scale-runners/scale-up.test.ts @@ -417,6 +417,48 @@ describe('scaleUp with GHES', () => { }); }); + it('adds an expiration policy to the JIT config when SSM_TOKEN_TTL_SECONDS is set', async () => { + process.env.SSM_TOKEN_TTL_SECONDS = '3600'; + await scaleUpModule.scaleUp(TEST_DATA); + expect(mockSSMClient).toHaveReceivedNthSpecificCommandWith(1, PutParameterCommand, { + Name: '/github-action-runners/default/runners/config/i-12345', + Value: 'TEST_JIT_CONFIG_ORG', + Type: 'SecureString', + Tier: 'Advanced', + Policies: expect.stringContaining('"Type":"Expiration"') as unknown as string, + }); + }); + + it('adds an expiration policy to the registration token when SSM_TOKEN_TTL_SECONDS is set', async () => { + process.env.ENABLE_EPHEMERAL_RUNNERS = 'false'; + process.env.SSM_TOKEN_TTL_SECONDS = '3600'; + await scaleUpModule.scaleUp(TEST_DATA); + expect(mockOctokit.actions.createRegistrationTokenForOrg).toBeCalled(); + expect(mockSSMClient).toHaveReceivedNthSpecificCommandWith(1, PutParameterCommand, { + Name: '/github-action-runners/default/runners/config/i-12345', + Type: 'SecureString', + Tier: 'Advanced', + Policies: expect.stringContaining('"Type":"Expiration"') as unknown as string, + }); + }); + + it('does not add an expiration policy when SSM_TOKEN_TTL_SECONDS is not set', async () => { + await scaleUpModule.scaleUp(TEST_DATA); + expect(mockSSMClient).toHaveReceivedNthSpecificCommandWith(1, PutParameterCommand, { + Name: '/github-action-runners/default/runners/config/i-12345', + Value: 'TEST_JIT_CONFIG_ORG', + Type: 'SecureString', + Tier: 'Standard', + Policies: undefined, + }); + }); + + it('rejects an invalid SSM_TOKEN_TTL_SECONDS before creating runners', async () => { + process.env.SSM_TOKEN_TTL_SECONDS = 'not-a-number'; + await expect(scaleUpModule.scaleUp(TEST_DATA)).rejects.toThrow('SSM_TOKEN_TTL_SECONDS must be a positive number'); + expect(mockSSMClient).not.toHaveReceivedCommand(PutParameterCommand); + }); + it('quotes runner labels with semicolon separators in non-ephemeral runner config', async () => { process.env.ENABLE_EPHEMERAL_RUNNERS = 'false'; process.env.RUNNERS_MAXIMUM_COUNT = '2'; diff --git a/lambdas/libs/aws-ssm-util/src/index.test.ts b/lambdas/libs/aws-ssm-util/src/index.test.ts index 8a1d8d3864..01c8eb8d42 100644 --- a/lambdas/libs/aws-ssm-util/src/index.test.ts +++ b/lambdas/libs/aws-ssm-util/src/index.test.ts @@ -167,6 +167,52 @@ describe('Test getParameter and putParameter', () => { Tier: expectedTier, }); }); + + it('Puts parameters without an expiration policy when no TTL is given', async () => { + // Arrange + mockSSMClient.on(PutParameterCommand).resolves({ $metadata: { httpStatusCode: 200 } }); + + // Act + await putParameter('testParam', 'test', false); + + // Assert + expect(mockSSMClient).toHaveReceivedCommandWith(PutParameterCommand, { + Name: 'testParam', + Value: 'test', + Type: 'String', + Tier: 'Standard', + Policies: undefined, + }); + }); + + it('Puts parameters with an expiration policy and forces Advanced tier when a TTL is given', async () => { + // Arrange + vi.useFakeTimers(); + vi.setSystemTime(new Date('2026-01-01T00:00:00.000Z')); + mockSSMClient.on(PutParameterCommand).resolves({ $metadata: { httpStatusCode: 200 } }); + + try { + // Act + await putParameter('testParam', 'test', true, { ttlSeconds: 3600 }); + + // Assert + expect(mockSSMClient).toHaveReceivedCommandWith(PutParameterCommand, { + Name: 'testParam', + Value: 'test', + Type: 'SecureString', + Tier: 'Advanced', + Policies: JSON.stringify([ + { + Type: 'Expiration', + Version: '1.0', + Attributes: { Timestamp: '2026-01-01T01:00:00.000Z' }, + }, + ]), + }); + } finally { + vi.useRealTimers(); + } + }); }); describe('Test getParameters (batch)', () => { diff --git a/lambdas/libs/aws-ssm-util/src/index.ts b/lambdas/libs/aws-ssm-util/src/index.ts index 71b33cbf41..75ba06517c 100644 --- a/lambdas/libs/aws-ssm-util/src/index.ts +++ b/lambdas/libs/aws-ssm-util/src/index.ts @@ -109,20 +109,37 @@ export async function putParameter( parameter_name: string, parameter_value: string, secure: boolean, - options: { tags?: Tag[] } = {}, + options: { tags?: Tag[]; ttlSeconds?: number } = {}, ): Promise { const client = ssmClient(); // Determine tier based on parameter_value size const valueSizeBytes = Buffer.byteLength(parameter_value, 'utf8'); + // Parameter policies (e.g. Expiration) are only supported on the Advanced + // tier, so a TTL forces the tier regardless of the value size. Expiration is + // enforced asynchronously by SSM: treat it as cleanup, not a security boundary. + const expiration = + options.ttlSeconds !== undefined + ? JSON.stringify([ + { + Type: 'Expiration', + Version: '1.0', + Attributes: { + Timestamp: new Date(Date.now() + options.ttlSeconds * 1000).toISOString(), + }, + }, + ]) + : undefined; + await client.send( new PutParameterCommand({ Name: parameter_name, Value: parameter_value, Type: secure ? 'SecureString' : 'String', Tags: options.tags, - Tier: valueSizeBytes >= SSM_ADVANCED_TIER_THRESHOLD ? 'Advanced' : 'Standard', + Tier: expiration || valueSizeBytes >= SSM_ADVANCED_TIER_THRESHOLD ? 'Advanced' : 'Standard', + Policies: expiration, }), ); } diff --git a/lambdas/libs/storage-providers/aws/ssm/environment.d.ts b/lambdas/libs/storage-providers/aws/ssm/environment.d.ts index 2604ce057e..ecb4aee2a6 100644 --- a/lambdas/libs/storage-providers/aws/ssm/environment.d.ts +++ b/lambdas/libs/storage-providers/aws/ssm/environment.d.ts @@ -6,6 +6,7 @@ declare global { SSM_PARAMETER_STORE_TAGS?: string; SSM_CONFIG_PATH?: string; SSM_TOKEN_PATH?: string; + SSM_TOKEN_TTL_SECONDS?: string; PARAMETER_GITHUB_APP_ID_NAME?: string; PARAMETER_GITHUB_APP_KEY_BASE64_NAME?: string; PARAMETER_GITHUB_APP_INSTALLATION_ID_NAME?: string; diff --git a/lambdas/libs/storage-providers/aws/ssm/runner-config-store.test.ts b/lambdas/libs/storage-providers/aws/ssm/runner-config-store.test.ts index 9d3e948b9d..989b08d15e 100644 --- a/lambdas/libs/storage-providers/aws/ssm/runner-config-store.test.ts +++ b/lambdas/libs/storage-providers/aws/ssm/runner-config-store.test.ts @@ -28,6 +28,7 @@ describe('aws_ssm runner config store', () => { vi.clearAllMocks(); process.env = { ...cleanEnv }; delete process.env.SSM_PARAMETER_STORE_TAGS; + delete process.env.SSM_TOKEN_TTL_SECONDS; process.env.SSM_TOKEN_PATH = '/runner/tokens'; }); @@ -63,6 +64,21 @@ describe('aws_ssm runner config store', () => { }); }); + it('passes the configured token TTL to SSM', async () => { + process.env.SSM_TOKEN_TTL_SECONDS = '3600'; + await createAwsSsmRunnerConfigStore().create({ runnerId: 'runner-1', value: 'jit-config' }); + expect(putParameterMock).toHaveBeenCalledWith('/runner/tokens/runner-1', 'jit-config', true, { + tags: [], + ttlSeconds: 3600, + }); + }); + + it('rejects an invalid token TTL before writing', () => { + process.env.SSM_TOKEN_TTL_SECONDS = 'not-a-number'; + expect(() => createAwsSsmRunnerConfigStore()).toThrow('SSM_TOKEN_TTL_SECONDS must be a positive number'); + expect(putParameterMock).not.toHaveBeenCalled(); + }); + it.each([undefined, '', ' '])('rejects missing or blank SSM_TOKEN_PATH %j before writing', (tokenPath) => { setTokenPath(tokenPath); diff --git a/lambdas/libs/storage-providers/aws/ssm/runner-config-store.ts b/lambdas/libs/storage-providers/aws/ssm/runner-config-store.ts index 584b654ba9..8c9297be32 100644 --- a/lambdas/libs/storage-providers/aws/ssm/runner-config-store.ts +++ b/lambdas/libs/storage-providers/aws/ssm/runner-config-store.ts @@ -5,10 +5,13 @@ import type {} from './environment'; import { createAwsSsmStorageLogger, getErrorNames } from './logger'; import { loadSsmParameterStoreTagsFromEnvironment } from './parameter-store-tags'; +import { parseSsmTokenTtlSeconds } from './token-ttl'; + const logger = createAwsSsmStorageLogger('runner-config-store'); export interface AwsSsmRunnerConfigStoreConfig { tokenPath: string; + tokenTtlSeconds?: number; parameterStoreTags: ReadonlyArray>; } @@ -28,6 +31,7 @@ export function createAwsSsmRunnerConfigStore(config?: AwsSsmRunnerConfigStoreCo return new AwsSsmRunnerConfigStore({ tokenPath, + tokenTtlSeconds: parseSsmTokenTtlSeconds(process.env.SSM_TOKEN_TTL_SECONDS), parameterStoreTags: loadSsmParameterStoreTagsFromEnvironment(), }); } @@ -46,6 +50,7 @@ class AwsSsmRunnerConfigStore implements RunnerConfigStore { try { await putParameter(parameterName, record.value, true, { + ttlSeconds: this.config.tokenTtlSeconds, tags: [ ...(options.metadata ?? []).map(({ key, value }) => ({ Key: key, Value: value })), ...this.config.parameterStoreTags, diff --git a/lambdas/libs/storage-providers/aws/ssm/token-ttl.test.ts b/lambdas/libs/storage-providers/aws/ssm/token-ttl.test.ts new file mode 100644 index 0000000000..1494cf0469 --- /dev/null +++ b/lambdas/libs/storage-providers/aws/ssm/token-ttl.test.ts @@ -0,0 +1,19 @@ +import { describe, expect, it } from 'vitest'; + +import { parseSsmTokenTtlSeconds } from './token-ttl'; + +describe('parseSsmTokenTtlSeconds', () => { + it.each([ + [undefined, undefined], + ['', undefined], + [' ', undefined], + ['3600', 3600], + ['1', 1], + ])('parses %j to %j', (input, expected) => { + expect(parseSsmTokenTtlSeconds(input)).toBe(expected); + }); + + it.each([['not-a-number'], ['0'], ['-10']])('throws on invalid value %j', (input) => { + expect(() => parseSsmTokenTtlSeconds(input)).toThrow('SSM_TOKEN_TTL_SECONDS must be a positive number'); + }); +}); diff --git a/lambdas/libs/storage-providers/aws/ssm/token-ttl.ts b/lambdas/libs/storage-providers/aws/ssm/token-ttl.ts new file mode 100644 index 0000000000..1c839ee0cd --- /dev/null +++ b/lambdas/libs/storage-providers/aws/ssm/token-ttl.ts @@ -0,0 +1,10 @@ +export function parseSsmTokenTtlSeconds(ttl: string | undefined): number | undefined { + if (!ttl || ttl.trim() === '') { + return undefined; + } + const ttlSeconds = parseInt(ttl); + if (isNaN(ttlSeconds) || ttlSeconds <= 0) { + throw new Error(`SSM_TOKEN_TTL_SECONDS must be a positive number, got "${ttl}"`); + } + return ttlSeconds; +} diff --git a/lambdas/libs/storage-providers/storage-providers.test.ts b/lambdas/libs/storage-providers/storage-providers.test.ts index f1b01ee66b..00f68c262e 100644 --- a/lambdas/libs/storage-providers/storage-providers.test.ts +++ b/lambdas/libs/storage-providers/storage-providers.test.ts @@ -1,5 +1,7 @@ import { describe, expect, it, vi } from 'vitest'; +import { createAwsSsmRunnerConfigStore } from './aws/ssm/runner-config-store'; + import { createStorageProviders } from './storage-providers'; vi.mock('./aws/ssm/runner-config-store', () => ({ @@ -20,6 +22,7 @@ describe('createStorageProviders', () => { const environment = Object.freeze({ RUNNER_CONFIG_STORAGE_PROVIDER: 'AWS_SSM', SSM_TOKEN_PATH: '/runners/tokens', + SSM_TOKEN_TTL_SECONDS: '3600', SSM_CONFIG_PATH: '/runners/config', SSM_PARAMETER_STORE_TAGS: JSON.stringify([{ Key: 'Environment', Value: 'test' }]), PARAMETER_GITHUB_APP_ID_NAME: 'app-id', @@ -32,6 +35,7 @@ describe('createStorageProviders', () => { const storage = createStorageProviders(environment); + expect(createAwsSsmRunnerConfigStore).toHaveBeenCalledWith(expect.objectContaining({ tokenTtlSeconds: 3600 })); expect(storage).toEqual({ runnerConfig: expect.any(Object), runnerGroupCache: expect.any(Object), diff --git a/lambdas/libs/storage-providers/storage-providers.ts b/lambdas/libs/storage-providers/storage-providers.ts index 8390fbd2d3..2d4f1e6b01 100644 --- a/lambdas/libs/storage-providers/storage-providers.ts +++ b/lambdas/libs/storage-providers/storage-providers.ts @@ -8,6 +8,8 @@ import { loadRunnerConfigConsumerConfigFromEnvironment } from './runner-config-c import { loadSsmParameterStoreTagsFromEnvironment } from './aws/ssm/parameter-store-tags'; import { resolveRunnerConfigStorageProvider, runnerConfigStorageProvider } from './provider'; +import { parseSsmTokenTtlSeconds } from './aws/ssm/token-ttl'; + type Environment = Readonly>; const logger = createChildLogger('storage-providers'); @@ -19,6 +21,7 @@ export function createStorageProviders(environment: Environment = process.env): } const tokenPath = required(environment.SSM_TOKEN_PATH, 'SSM_TOKEN_PATH'); + const tokenTtlSeconds = parseSsmTokenTtlSeconds(environment.SSM_TOKEN_TTL_SECONDS); const configPath = required(environment.SSM_CONFIG_PATH, 'SSM_CONFIG_PATH'); const parameterStoreTags = loadSsmParameterStoreTagsFromEnvironment(environment); const consumerConfig = loadRunnerConfigConsumerConfigFromEnvironment(environment); @@ -29,7 +32,7 @@ export function createStorageProviders(environment: Environment = process.env): }); return { - runnerConfig: createAwsSsmRunnerConfigStore({ tokenPath, parameterStoreTags }), + runnerConfig: createAwsSsmRunnerConfigStore({ tokenPath, tokenTtlSeconds, parameterStoreTags }), runnerGroupCache: createAwsSsmRunnerGroupCacheStore({ configPath, parameterStoreTags }), consumer: createAwsSsmRunnerConfigConsumer({ SSM_TOKEN_PATH: tokenPath }, consumerConfig), ...createCommonStorage(environment), diff --git a/main.tf b/main.tf index 26e7e472f9..cb073d55fc 100644 --- a/main.tf +++ b/main.tf @@ -182,6 +182,7 @@ module "runners" { tokens = "${var.ssm_paths.runners}/tokens" config = "${var.ssm_paths.runners}/config" } + ssm_token_ttl_seconds = var.ssm_token_ttl_seconds s3_runner_binaries = var.enable_runner_binaries_syncer ? { arn = module.runner_binaries[0].bucket.arn diff --git a/modules/multi-runner/README.md b/modules/multi-runner/README.md index 61a558389f..e4b4d3f780 100644 --- a/modules/multi-runner/README.md +++ b/modules/multi-runner/README.md @@ -198,7 +198,7 @@ multi_runner_config = { | [global\_config\_github](#input\_global\_config\_github) | Global GitHub configuration shared by all runner lanes.

global\_config\_github = {
app: {
key\_base64: "Base64-encoded GitHub App private key."
key\_base64\_ssm: "SSM parameter containing the Base64-encoded GitHub App private key."
key\_base64\_ssm.arn: "ARN of the SSM parameter containing the GitHub App private key."
key\_base64\_ssm.name: "Name of the SSM parameter containing the GitHub App private key."
id: "GitHub App ID."
id\_ssm: "SSM parameter containing the GitHub App ID."
id\_ssm.arn: "ARN of the SSM parameter containing the GitHub App ID."
id\_ssm.name: "Name of the SSM parameter containing the GitHub App ID."
webhook\_secret: "GitHub App webhook secret."
webhook\_secret\_ssm: "SSM parameter containing the GitHub App webhook secret."
webhook\_secret\_ssm.arn: "ARN of the SSM parameter containing the GitHub App webhook secret."
webhook\_secret\_ssm.name: "Name of the SSM parameter containing the GitHub App webhook secret."
}
additional\_apps: "Additional GitHub Apps used to distribute GitHub API requests."
additional\_apps.key\_base64: "Base64-encoded private key for an additional GitHub App."
additional\_apps.key\_base64\_ssm: "SSM parameter containing an additional App private key."
additional\_apps.key\_base64\_ssm.arn: "ARN of the SSM parameter containing an additional App private key."
additional\_apps.key\_base64\_ssm.name: "Name of the SSM parameter containing an additional App private key."
additional\_apps.id: "ID of an additional GitHub App."
additional\_apps.id\_ssm: "SSM parameter containing an additional GitHub App ID."
additional\_apps.id\_ssm.arn: "ARN of the SSM parameter containing an additional GitHub App ID."
additional\_apps.id\_ssm.name: "Name of the SSM parameter containing an additional GitHub App ID."
additional\_apps.installation\_id: "Optional installation ID for an additional GitHub App."
additional\_apps.installation\_id\_ssm: "SSM parameter containing an additional App installation ID."
additional\_apps.installation\_id\_ssm.arn: "ARN of the SSM parameter containing an additional App installation ID."
additional\_apps.installation\_id\_ssm.name: "Name of the SSM parameter containing an additional App installation ID."
enterprise\_server.url: "GitHub Enterprise Server URL."
enterprise\_server.ssl\_verify: "Whether to verify the GitHub Enterprise Server TLS certificate."
user\_agent: "User-Agent value sent with GitHub API requests."
} |
object({
app = optional(object({
key_base64 = optional(string)
key_base64_ssm = optional(object({
arn = string
name = string
}))
id = optional(string)
id_ssm = optional(object({
arn = string
name = string
}))
webhook_secret = optional(string)
webhook_secret_ssm = optional(object({
arn = string
name = string
}))
}), null)
additional_apps = optional(list(object({
key_base64 = optional(string)
key_base64_ssm = optional(object({ arn = string, name = string }))
id = optional(string)
id_ssm = optional(object({ arn = string, name = string }))
installation_id = optional(string)
installation_id_ssm = optional(object({ arn = string, name = string }))
})), [])
enterprise_server = optional(object({
url = optional(string, null)
ssl_verify = optional(bool, true)
}), {})
user_agent = optional(string, "github-aws-runners")
})
| `{}` | no | | [global\_config\_lambda](#input\_global\_config\_lambda) | Global Lambda configuration shared by all runner lanes.

global\_config\_lambda = {
artifact.s3.bucket: "S3 bucket containing Lambda deployment artifacts."
runtime: "Default Lambda runtime."
architecture: "Default Lambda instruction-set architecture."
principals: "Additional AWS principals allowed to invoke the Lambda functions."
principals.type: "Principal type, such as AWS account, service, or organization."
principals.identifiers: "Identifiers allowed for the principal type."
subnet\_ids: "Subnets used by Lambda functions."
security\_group\_ids: "Security groups attached to Lambda functions."
tags: "Tags applied to Lambda functions and related resources."
role.path: "IAM path used for Lambda execution roles."
role.permissions\_boundary: "Optional IAM permissions boundary ARN for Lambda execution roles."
} |
object({
artifact = optional(object({
s3 = optional(object({
bucket = optional(string, null)
}), {})
}), {})
runtime = optional(string, "nodejs24.x")
architecture = optional(string, "arm64")
principals = optional(list(object({
type = string
identifiers = list(string)
})), [])
subnet_ids = optional(list(string), [])
security_group_ids = optional(list(string), [])
tags = optional(map(string), {})
role = optional(object({
path = optional(string, null)
permissions_boundary = optional(string, null)
}), {})
})
| `{}` | no | | [global\_config\_observability](#input\_global\_config\_observability) | Global observability configuration shared by all runner lanes.

global\_config\_observability = {
logs.level: "Log level for module resources."
logs.retention\_in\_days: "CloudWatch log retention period in days."
logs.kms\_key\_id: "KMS key ID used to encrypt CloudWatch log groups."
logs.class: "CloudWatch log group class."
logs.tags: "Tags applied to CloudWatch log groups."
tracing.mode: "Tracing mode used by instrumented resources."
tracing.capture\_http\_requests: "Whether HTTP requests are captured by tracing."
tracing.capture\_error: "Whether errors are captured by tracing."
metrics.enabled: "Whether module metrics are enabled."
metrics.namespace: "CloudWatch namespace used for module metrics."
metrics.metric.github\_app\_rate\_limit.enabled: "Whether GitHub App rate-limit metrics are emitted."
metrics.metric.job\_retry.enabled: "Whether job-retry metrics are emitted."
metrics.metric.spot\_termination\_warning.enabled: "Whether spot-termination warning metrics are emitted."
} |
object({
logs = optional(object({
level = optional(string, "info")
retention_in_days = optional(number, 180)
kms_key_id = optional(string, null)
class = optional(string, "STANDARD")
tags = optional(map(string), {})
}), {})
tracing = optional(object({
mode = optional(string, null)
capture_http_requests = optional(bool, false)
capture_error = optional(bool, false)
}), {})
metrics = optional(object({
enabled = optional(bool, false)
namespace = optional(string, "GitHub Runners")
metric = optional(object({
github_app_rate_limit = optional(object({
enabled = optional(bool, true)
}), {})
job_retry = optional(object({
enabled = optional(bool, true)
}), {})
spot_termination_warning = optional(object({
enabled = optional(bool, true)
}), {})
}), {})
}), {})
})
| `{}` | no | -| [global\_config\_orchestration\_provider](#input\_global\_config\_orchestration\_provider) | Global orchestration-provider configuration shared by all runner lanes.

global\_config\_orchestration\_provider = {
webhook: {
queue\_selection\_strategy: "Strategy used to select the build queue for a webhook event."
eventbridge.enabled: "Whether EventBridge integration is enabled for webhook events."
eventbridge.accept\_events: "Event types accepted by the EventBridge integration."
matcher\_config\_parameter\_store\_tier: "SSM Parameter Store tier used for matcher configuration."
runner.boot\_time\_in\_minutes: "Expected runner boot time used by orchestration."
runner.ephemeral: "Whether runners created by the orchestration provider are ephemeral."
runner.jit\_config\_enabled: "Whether JIT runner configuration is enabled."
runner.maximum\_count: "Maximum number of runners that orchestration may create."
github.repository\_white\_list: "Repositories allowed to use the webhook configuration."
lambda.artifact.zip: "Local ZIP artifact used for orchestration Lambda functions."
lambda.artifact.s3.key: "S3 object key for the orchestration Lambda artifact."
lambda.artifact.s3.object\_version: "Optional S3 object version for the orchestration Lambda artifact."
lambda.scale.up.memory\_size: "Memory allocated to the scale-up Lambda."
lambda.scale.up.timeout: "Timeout in seconds for the scale-up Lambda."
lambda.scale.up.reserved\_concurrent\_executions: "Reserved concurrent executions for the scale-up Lambda."
lambda.scale.up.job\_queued\_check\_enabled: "Whether the scale-up Lambda checks queued jobs."
lambda.scale.up.event\_source\_mapping.batch\_size: "Maximum records passed to one scale-up Lambda invocation."
lambda.scale.up.event\_source\_mapping.maximum\_batching\_window\_in\_seconds: "Maximum time to batch records before invoking the scale-up Lambda."
lambda.scale.up.tags: "Tags applied to the scale-up Lambda."
lambda.scale.down.memory\_size: "Memory allocated to the scale-down Lambda."
lambda.scale.down.timeout: "Timeout in seconds for the scale-down Lambda."
lambda.scale.down.schedule\_expression: "Schedule expression for scale-down processing."
lambda.scale.down.minimum\_running\_time\_in\_minutes: "Minimum runner lifetime before scale-down."
lambda.scale.down.idle\_config: "Scheduled minimum idle-runner pool settings."
lambda.scale.down.idle\_config.cron: "Cron expression defining when the idle-runner count applies."
lambda.scale.down.idle\_config.timeZone: "Time zone used to evaluate the idle-runner schedule."
lambda.scale.down.idle\_config.idleCount: "Minimum number of idle runners maintained during the schedule."
lambda.scale.down.idle\_config.evictionStrategy: "Strategy used when evicting idle runners."
lambda.scale.down.tags: "Tags applied to the scale-down Lambda."
lambda.webhook.artifact.zip: "Local ZIP artifact used for the webhook Lambda."
lambda.webhook.artifact.s3.key: "S3 object key for the webhook Lambda artifact."
lambda.webhook.artifact.s3.object\_version: "Optional S3 object version for the webhook Lambda artifact."
lambda.webhook.api\_gateway\_access\_log\_settings: "API Gateway access-log destination and format."
lambda.webhook.api\_gateway\_access\_log\_settings.destination\_arn: "ARN of the API Gateway access-log destination."
lambda.webhook.api\_gateway\_access\_log\_settings.format: "API Gateway access-log format."
lambda.webhook.memory\_size: "Memory allocated to the webhook Lambda."
lambda.webhook.timeout: "Timeout in seconds for the webhook Lambda."
lambda.webhook.tags: "Tags applied to the webhook Lambda."
lambda.pool.memory\_size: "Memory allocated to the pool Lambda."
lambda.pool.timeout: "Timeout in seconds for the pool Lambda."
lambda.pool.reserved\_concurrent\_executions: "Reserved concurrent executions for the pool Lambda."
lambda.pool.config: "Scheduled runner-pool size configuration."
lambda.pool.config.schedule\_expression: "Schedule expression for the pool size."
lambda.pool.config.schedule\_expression\_timezone: "Time zone used to evaluate the pool schedule."
lambda.pool.config.size: "Runner pool size applied by the schedule."
lambda.pool.include\_busy\_runners: "Whether busy runners are included in pool sizing."
lambda.pool.runner\_owner: "GitHub organization that owns the runner pool."
lambda.pool.tags: "Tags applied to the pool Lambda."
queue.delay\_webhook\_event: "Seconds a webhook event remains invisible in the build queue before processing."
queue.job\_queue\_retention\_in\_seconds: "Seconds a queued job is retained before it is purged."
queue.visibility\_timeout\_seconds: "Build queue visibility timeout in seconds."
queue.redrive\_build\_queue.enabled: "Whether the build queue dead-letter queue is enabled."
queue.redrive\_build\_queue.maxReceiveCount: "Maximum receives before a message is moved to the dead-letter queue."
queue.tags: "Tags applied to build queues."
queue.encryption.kms\_data\_key\_reuse\_period\_seconds: "KMS data-key reuse period for queue encryption."
queue.encryption.kms\_master\_key\_id: "KMS key ID used for queue encryption."
queue.encryption.sqs\_managed\_sse\_enabled: "Whether SQS-managed server-side encryption is enabled."
}
} |
object({
webhook = optional(object({
queue_selection_strategy = optional(string, "first")
eventbridge = optional(object({
enabled = optional(bool, true)
accept_events = optional(list(string), [])
}), {})
matcher_config_parameter_store_tier = optional(string, "Standard")
runner = optional(object({
boot_time_in_minutes = optional(number, 5)
ephemeral = optional(bool, false)
jit_config_enabled = optional(bool, null)
maximum_count = optional(number, null)
}), {})

github = optional(object({
repository_white_list = optional(list(string), [])
}), {})

lambda = optional(object({
artifact = optional(object({
zip = optional(string, null)
s3 = optional(object({
key = string
object_version = optional(string, null)
}), null)
}), {})
scale = optional(object({
up = optional(object({
memory_size = optional(number, 512)
timeout = optional(number, 30)
reserved_concurrent_executions = optional(number, 1)
job_queued_check_enabled = optional(bool, null)
event_source_mapping = optional(object({
batch_size = optional(number, 10)
maximum_batching_window_in_seconds = optional(number, 0)
}), {})
tags = optional(map(string), {})
}), {})
down = optional(object({
memory_size = optional(number, 512)
timeout = optional(number, 60)
schedule_expression = optional(string, "cron(*/5 * * * ? *)")
minimum_running_time_in_minutes = optional(number, null)
idle_config = optional(list(object({
cron = string
timeZone = string
idleCount = number
evictionStrategy = optional(string, "oldest_first")
})), [])
tags = optional(map(string), {})
}), {})
}), {})
webhook = optional(object({
artifact = optional(object({
zip = optional(string, null)
s3 = optional(object({
key = string
object_version = optional(string, null)
}), null)
}), {})
api_gateway_access_log_settings = optional(object({
destination_arn = string
format = string
}), null)
memory_size = optional(number, 256)
timeout = optional(number, 10)
tags = optional(map(string), {})
}), {})
pool = optional(object({
memory_size = optional(number, 512)
timeout = optional(number, 60)
reserved_concurrent_executions = optional(number, 1)
config = optional(list(object({
schedule_expression = string
schedule_expression_timezone = optional(string)
size = number
})), [])
include_busy_runners = optional(bool, false)
runner_owner = optional(string, null)
tags = optional(map(string), {})
}), {})
}), {})

queue = optional(object({
delay_webhook_event = optional(number, 30)
job_queue_retention_in_seconds = optional(number, 86400)
visibility_timeout_seconds = optional(number, 180)
redrive_build_queue = optional(object({
enabled = optional(bool, false)
maxReceiveCount = optional(number, null)
}), {
enabled = false
maxReceiveCount = null
})
tags = optional(map(string), {})
encryption = optional(object({
kms_data_key_reuse_period_seconds = number
kms_master_key_id = string
sqs_managed_sse_enabled = bool
}), {
kms_data_key_reuse_period_seconds = null
kms_master_key_id = null
sqs_managed_sse_enabled = true
})
}), {})
}), {})
})
| `{}` | no | +| [global\_config\_orchestration\_provider](#input\_global\_config\_orchestration\_provider) | Global orchestration-provider configuration shared by all runner lanes.

global\_config\_orchestration\_provider = {
webhook: {
queue\_selection\_strategy: "Strategy used to select the build queue for a webhook event."
eventbridge.enabled: "Whether EventBridge integration is enabled for webhook events."
eventbridge.accept\_events: "Event types accepted by the EventBridge integration."
matcher\_config\_parameter\_store\_tier: "SSM Parameter Store tier used for matcher configuration."
runner.boot\_time\_in\_minutes: "Expected runner boot time used by orchestration."
runner.ephemeral: "Whether runners created by the orchestration provider are ephemeral."
runner.jit\_config\_enabled: "Whether JIT runner configuration is enabled."
runner.maximum\_count: "Maximum number of runners that orchestration may create."
github.repository\_white\_list: "Repositories allowed to use the webhook configuration."
lambda.artifact.zip: "Local ZIP artifact used for orchestration Lambda functions."
lambda.artifact.s3.key: "S3 object key for the orchestration Lambda artifact."
lambda.artifact.s3.object\_version: "Optional S3 object version for the orchestration Lambda artifact."
lambda.scale.up.memory\_size: "Memory allocated to the scale-up Lambda."
lambda.scale.up.timeout: "Timeout in seconds for the scale-up Lambda."
lambda.scale.up.reserved\_concurrent\_executions: "Reserved concurrent executions for the scale-up Lambda."
lambda.scale.up.job\_queued\_check\_enabled: "Whether the scale-up Lambda checks queued jobs."
lambda.scale.up.event\_source\_mapping.batch\_size: "Maximum records passed to one scale-up Lambda invocation."
lambda.scale.up.event\_source\_mapping.maximum\_batching\_window\_in\_seconds: "Maximum time to batch records before invoking the scale-up Lambda."
lambda.scale.up.tags: "Tags applied to the scale-up Lambda."
lambda.scale.down.memory\_size: "Memory allocated to the scale-down Lambda."
lambda.scale.down.timeout: "Timeout in seconds for the scale-down Lambda."
lambda.scale.down.schedule\_expression: "Schedule expression for scale-down processing."
lambda.scale.down.minimum\_running\_time\_in\_minutes: "Minimum runner lifetime before scale-down."
lambda.scale.down.idle\_confirmation\_seconds: "Seconds a runner must consistently report not-busy before scale-down terminates it; 0 disables the confirmation window."
lambda.scale.down.idle\_config: "Scheduled minimum idle-runner pool settings."
lambda.scale.down.idle\_config.cron: "Cron expression defining when the idle-runner count applies."
lambda.scale.down.idle\_config.timeZone: "Time zone used to evaluate the idle-runner schedule."
lambda.scale.down.idle\_config.idleCount: "Minimum number of idle runners maintained during the schedule."
lambda.scale.down.idle\_config.evictionStrategy: "Strategy used when evicting idle runners."
lambda.scale.down.tags: "Tags applied to the scale-down Lambda."
lambda.webhook.artifact.zip: "Local ZIP artifact used for the webhook Lambda."
lambda.webhook.artifact.s3.key: "S3 object key for the webhook Lambda artifact."
lambda.webhook.artifact.s3.object\_version: "Optional S3 object version for the webhook Lambda artifact."
lambda.webhook.api\_gateway\_access\_log\_settings: "API Gateway access-log destination and format."
lambda.webhook.api\_gateway\_access\_log\_settings.destination\_arn: "ARN of the API Gateway access-log destination."
lambda.webhook.api\_gateway\_access\_log\_settings.format: "API Gateway access-log format."
lambda.webhook.memory\_size: "Memory allocated to the webhook Lambda."
lambda.webhook.timeout: "Timeout in seconds for the webhook Lambda."
lambda.webhook.tags: "Tags applied to the webhook Lambda."
lambda.pool.memory\_size: "Memory allocated to the pool Lambda."
lambda.pool.timeout: "Timeout in seconds for the pool Lambda."
lambda.pool.reserved\_concurrent\_executions: "Reserved concurrent executions for the pool Lambda."
lambda.pool.config: "Scheduled runner-pool size configuration."
lambda.pool.config.schedule\_expression: "Schedule expression for the pool size."
lambda.pool.config.schedule\_expression\_timezone: "Time zone used to evaluate the pool schedule."
lambda.pool.config.size: "Runner pool size applied by the schedule."
lambda.pool.include\_busy\_runners: "Whether busy runners are included in pool sizing."
lambda.pool.runner\_owner: "GitHub organization that owns the runner pool."
lambda.pool.tags: "Tags applied to the pool Lambda."
queue.delay\_webhook\_event: "Seconds a webhook event remains invisible in the build queue before processing."
queue.job\_queue\_retention\_in\_seconds: "Seconds a queued job is retained before it is purged."
queue.visibility\_timeout\_seconds: "Build queue visibility timeout in seconds."
queue.redrive\_build\_queue.enabled: "Whether the build queue dead-letter queue is enabled."
queue.redrive\_build\_queue.maxReceiveCount: "Maximum receives before a message is moved to the dead-letter queue."
queue.tags: "Tags applied to build queues."
queue.encryption.kms\_data\_key\_reuse\_period\_seconds: "KMS data-key reuse period for queue encryption."
queue.encryption.kms\_master\_key\_id: "KMS key ID used for queue encryption."
queue.encryption.sqs\_managed\_sse\_enabled: "Whether SQS-managed server-side encryption is enabled."
}
} |
object({
webhook = optional(object({
queue_selection_strategy = optional(string, "first")
eventbridge = optional(object({
enabled = optional(bool, true)
accept_events = optional(list(string), [])
}), {})
matcher_config_parameter_store_tier = optional(string, "Standard")
runner = optional(object({
boot_time_in_minutes = optional(number, 5)
ephemeral = optional(bool, false)
jit_config_enabled = optional(bool, null)
maximum_count = optional(number, null)
}), {})

github = optional(object({
repository_white_list = optional(list(string), [])
}), {})

lambda = optional(object({
artifact = optional(object({
zip = optional(string, null)
s3 = optional(object({
key = string
object_version = optional(string, null)
}), null)
}), {})
scale = optional(object({
up = optional(object({
memory_size = optional(number, 512)
timeout = optional(number, 30)
reserved_concurrent_executions = optional(number, 1)
job_queued_check_enabled = optional(bool, null)
event_source_mapping = optional(object({
batch_size = optional(number, 10)
maximum_batching_window_in_seconds = optional(number, 0)
}), {})
tags = optional(map(string), {})
}), {})
down = optional(object({
memory_size = optional(number, 512)
timeout = optional(number, 60)
schedule_expression = optional(string, "cron(*/5 * * * ? *)")
minimum_running_time_in_minutes = optional(number, null)
idle_confirmation_seconds = optional(number, 0)
idle_config = optional(list(object({
cron = string
timeZone = string
idleCount = number
evictionStrategy = optional(string, "oldest_first")
})), [])
tags = optional(map(string), {})
}), {})
}), {})
webhook = optional(object({
artifact = optional(object({
zip = optional(string, null)
s3 = optional(object({
key = string
object_version = optional(string, null)
}), null)
}), {})
api_gateway_access_log_settings = optional(object({
destination_arn = string
format = string
}), null)
memory_size = optional(number, 256)
timeout = optional(number, 10)
tags = optional(map(string), {})
}), {})
pool = optional(object({
memory_size = optional(number, 512)
timeout = optional(number, 60)
reserved_concurrent_executions = optional(number, 1)
config = optional(list(object({
schedule_expression = string
schedule_expression_timezone = optional(string)
size = number
})), [])
include_busy_runners = optional(bool, false)
runner_owner = optional(string, null)
tags = optional(map(string), {})
}), {})
}), {})

queue = optional(object({
delay_webhook_event = optional(number, 30)
job_queue_retention_in_seconds = optional(number, 86400)
visibility_timeout_seconds = optional(number, 180)
redrive_build_queue = optional(object({
enabled = optional(bool, false)
maxReceiveCount = optional(number, null)
}), {
enabled = false
maxReceiveCount = null
})
tags = optional(map(string), {})
encryption = optional(object({
kms_data_key_reuse_period_seconds = number
kms_master_key_id = string
sqs_managed_sse_enabled = bool
}), {
kms_data_key_reuse_period_seconds = null
kms_master_key_id = null
sqs_managed_sse_enabled = true
})
}), {})
}), {})
})
| `{}` | no | | [global\_config\_ssm](#input\_global\_config\_ssm) | Global SSM configuration shared by all runner lanes.

global\_config\_ssm = {
paths.root: "Root path for SSM parameters."
paths.app: "Path segment for application parameters."
paths.webhook: "Path segment for webhook parameters."
paths.tokens: "Path segment for runner token parameters."
paths.config: "Path segment for runner configuration parameters."
kms\_key\_id: "KMS key ID used to encrypt SSM parameters."
tags: "Tags applied to SSM resources."
parameters.tags: "Tags applied to runner configuration parameters."
housekeeper.schedule\_expression: "Schedule for the SSM parameter housekeeper."
housekeeper.state: "EventBridge rule state for the SSM parameter housekeeper."
housekeeper.tags: "Tags applied to the SSM housekeeper resources."
housekeeper.lambda.artifact.zip: "Local ZIP artifact used for the SSM housekeeper Lambda."
housekeeper.lambda.artifact.s3.key: "S3 object key for the SSM housekeeper Lambda artifact."
housekeeper.lambda.artifact.s3.object\_version: "Optional S3 object version for the SSM housekeeper artifact."
housekeeper.lambda.memory\_size: "Memory allocated to the SSM housekeeper Lambda."
housekeeper.lambda.timeout: "Timeout in seconds for the SSM housekeeper Lambda."
housekeeper.config.tokenPath: "Parameter path containing runner tokens to clean up."
housekeeper.config.minimumDaysOld: "Minimum age in days before an old token is eligible for cleanup."
housekeeper.config.dryRun: "Whether the SSM housekeeper reports cleanup without deleting parameters."
} |
object({
paths = optional(object({
root = optional(string, null)
app = optional(string, "app")
webhook = optional(string, "webhook")
tokens = optional(string, "runners/tokens")
config = optional(string, "runners/config")
}), {})
kms_key_id = optional(string, null)
tags = optional(map(string), {})
parameters = optional(object({
tags = optional(map(string), {})
}), {})
housekeeper = optional(object({
schedule_expression = optional(string, "rate(1 day)")
state = optional(string, "ENABLED")
tags = optional(map(string), {})
lambda = optional(object({
artifact = optional(object({
zip = optional(string, null)
s3 = optional(object({
key = string
object_version = optional(string, null)
}), null)
}), {})
memory_size = optional(number, 512)
timeout = optional(number, 60)
}), {})
config = optional(object({
tokenPath = optional(string, null)
minimumDaysOld = optional(number, 1)
dryRun = optional(bool, false)
}), {})
}), {})
})
| `{}` | no | | [iam\_overrides](#input\_iam\_overrides) | This map provides the possibility to override some IAM defaults. The following attributes are supported: `instance_profile_name` overrides the instance profile name used in the launch template. `runner_role_arn` overrides the IAM role ARN used for the runner instances. |
object({
override_instance_profile = optional(bool, null)
instance_profile_name = optional(string, null)
override_runner_role = optional(bool, null)
runner_role_arn = optional(string, null)
})
|
{
"instance_profile_name": null,
"override_instance_profile": false,
"override_runner_role": false,
"runner_role_arn": null
}
| no | | [instance\_profile\_path](#input\_instance\_profile\_path) | The path that will be added to the instance\_profile, if not set the environment name will be used. | `string` | `null` | no | @@ -220,7 +220,7 @@ multi_runner_config = { | [logging\_retention\_in\_days](#input\_logging\_retention\_in\_days) | Specifies the number of days you want to retain log events for the lambda log group. Possible values are: 0, 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, and 3653. | `number` | `180` | no | | [matcher\_config\_parameter\_store\_tier](#input\_matcher\_config\_parameter\_store\_tier) | The tier of the parameter store for the matcher configuration. Valid values are `Standard`, and `Advanced`. | `string` | `"Standard"` | no | | [metrics](#input\_metrics) | Configuration for metrics created by the module, by default metrics are disabled to avoid additional costs. When metrics are enable all metrics are created unless explicit configured otherwise. |
object({
enable = optional(bool, false)
namespace = optional(string, "GitHub Runners")
metric = optional(object({
enable_github_app_rate_limit = optional(bool, true)
enable_job_retry = optional(bool, true)
enable_spot_termination_warning = optional(bool, true)
}), {})
})
| `{}` | no | -| [multi\_runner\_config](#input\_multi\_runner\_config) | Accepts either the stable v1 runner configuration shape or the provider-boundary v2 shape. Entries with `runner_config` use the v1 shape; entries without `runner_config` use the v2 shape. A v2 entry does not need matcher configuration. A v2 entry must be acknowledged with `experimental_features = ["multi-runner-v2"]`; the v2 shape is experimental and may change before graduation.

multi\_runner\_config = {
runner\_config: {
runner\_os: "The EC2 Operating System type to use for action runner instances (linux, osx, windows)."
runner\_architecture: "The platform architecture of the runner instance\_type."
runner\_metadata\_options: "(Optional) Metadata options for the ec2 runner instances."
ami: "(Optional) AMI configuration for the action runner instances. This object allows you to specify all AMI-related settings in one place."
create\_service\_linked\_role\_spot: (Optional) create the serviced linked role for spot instances that is required by the scale-up lambda.
credit\_specification: "(Optional) The credit specification of the runner instance\_type. Can be unset, `standard` or `unlimited`.
delay\_webhook\_event: "The number of seconds the event accepted by the webhook is invisible on the queue before the scale up lambda will receive the event."
disable\_runner\_autoupdate: "Disable the auto update of the github runner agent. Be aware there is a grace period of 30 days, see also the [GitHub article](https://github.blog/changelog/2022-02-01-github-actions-self-hosted-runners-can-now-disable-automatic-updates/)"
ebs\_optimized: "The EC2 EBS optimized configuration."
enable\_ephemeral\_runners: "Enable ephemeral runners, runners will only be used once."
enable\_job\_queued\_check: Enables JIT configuration for creating runners instead of registration token based registraton. JIT configuration will only be applied for ephemeral runners. By default JIT configuration is enabled for ephemeral runners an can be disabled via this override. When running on GHES without support for JIT configuration this variable should be set to true for ephemeral runners."
enable\_on\_demand\_failover\_for\_errors: "Enable on-demand failover. For example to fall back to on demand when no spot capacity is available the variable can be set to `InsufficientInstanceCapacity`. When not defined the default behavior is to retry later."
scale\_errors: "List of AWS error codes that should trigger retry during scale up. This list replaces the module default scale-up retry errors"
enable\_organization\_runners: "Register runners to organization, instead of repo level"
enable\_runner\_binaries\_syncer: "Option to disable the lambda to sync GitHub runner distribution, useful when using a pre-build AMI."
enable\_ssm\_on\_runners: "Enable to allow access the runner instances for debugging purposes via SSM. Note that this adds additional permissions to the runner instances."
enable\_userdata: "Should the userdata script be enabled for the runner. Set this to false if you are using your own prebuilt AMI."
instance\_allocation\_strategy: "The allocation strategy for creating instances. For spot, AWS recommends `price-capacity-optimized`; for on-demand, use `lowest-price` or `prioritized`. The AWS default is `lowest-price`."
instance\_type\_priorities: "A map of instance type to priority for the `prioritized` and `capacity-optimized-prioritized` allocation strategies. Lower numbers mean higher priority. If not provided, priorities are assigned based on the order of `instance_types`."
instance\_max\_spot\_price: "Max price price for spot instances per hour. This variable will be passed to the create fleet as max spot price for the fleet."
instance\_target\_capacity\_type: "Default lifecycle used for runner instances, can be either `spot` or `on-demand`."
instance\_types: "List of instance types for the action runner. Defaults are based on runner\_os (al2023 for linux, macOS Sequoia for osx, Windows Server Core for win)."
job\_queue\_retention\_in\_seconds: "The number of seconds the job is held in the queue before it is purged"
minimum\_running\_time\_in\_minutes: "The time an ec2 action runner should be running at minimum before terminated if not busy."
pool\_runner\_owner: "The pool will deploy runners to the GitHub org ID, set this value to the org to which you want the runners deployed. Repo level is not supported."
runner\_additional\_security\_group\_ids: "List of additional security groups IDs to apply to the runner. If added outside the multi\_runner\_config block, the additional security group(s) will be applied to all runner configs. If added inside the multi\_runner\_config, the additional security group(s) will be applied to the individual runner."
runner\_as\_root: "Run the action runner under the root user. Variable `runner_run_as` will be ignored."
runner\_boot\_time\_in\_minutes: "The minimum time for an EC2 runner to boot and register as a runner."
runner\_disable\_default\_labels: "Disable default labels for the runners (os, architecture and `self-hosted`). If enabled, the runner will only have the extra labels provided in `runner_extra_labels`. In case you on own start script is used, this configuration parameter needs to be parsed via SSM."
runner\_extra\_labels: "Extra (custom) labels for the runners (GitHub). Separate each label by a comma. Labels checks on the webhook can be enforced by setting `multi_runner_config.matcherConfig.exactMatch`. GitHub read-only labels should not be provided."
runner\_group\_name: "Name of the runner group."
runner\_name\_prefix: "Prefix for the GitHub runner name."
runner\_run\_as: "Run the GitHub actions agent as user."
runners\_maximum\_count: "The maximum number of runners that will be created. Setting the variable to `-1` disables the maximum check."
scale\_down\_schedule\_expression: "Scheduler expression to check every x for scale down."
scale\_up\_reserved\_concurrent\_executions: "Amount of reserved concurrent executions for the scale-up lambda function. A value of 0 disables lambda from being triggered and -1 removes any concurrency limitations."
lambda\_event\_source\_mapping\_batch\_size: "(Optional) Maximum number of records per Lambda invocation for this runner flavor. Overrides the module-level `lambda_event_source_mapping_batch_size` when set."
lambda\_event\_source\_mapping\_maximum\_batching\_window\_in\_seconds: "(Optional) Maximum seconds to gather records before invoking Lambda for this runner flavor. Overrides the module-level `lambda_event_source_mapping_maximum_batching_window_in_seconds` when set."
userdata\_template: "Alternative user-data template, replacing the default template. By providing your own user\_data you have to take care of installing all required software, including the action runner. Variables userdata\_pre/post\_install are ignored."
enable\_jit\_config: "Overwrite the default behavior for JIT configuration. By default JIT configuration is enabled for ephemeral runners and disabled for non-ephemeral runners. In case of GHES check first if the JIT config API is available. In case you are upgrading from 3.x to 4.x you can set `enable_jit_config` to `false` to avoid a breaking change when having your own AMI."
enable\_runner\_detailed\_monitoring: "Should detailed monitoring be enabled for the runner. Set this to true if you want to use detailed monitoring. See https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-cloudwatch-new.html for details."
enable\_cloudwatch\_agent: "Enabling the cloudwatch agent on the ec2 runner instances, the runner contains default config. Configuration can be overridden via `cloudwatch_config`."
cloudwatch\_config: "(optional) Replaces the module default cloudwatch log config. See https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Agent-Configuration-File-Details.html for details."
userdata\_pre\_install: "Script to be ran before the GitHub Actions runner is installed on the EC2 instances"
userdata\_post\_install: "Script to be ran after the GitHub Actions runner is installed on the EC2 instances"
runner\_hook\_job\_started: "Script to be ran in the runner environment at the beginning of every job"
runner\_hook\_job\_completed: "Script to be ran in the runner environment at the end of every job"
runner\_ec2\_tags: "Map of tags that will be added to the launch template instance tag specifications."
runner\_iam\_role\_managed\_policy\_arns: "Attach AWS or customer-managed IAM policies (by ARN) to the runner IAM role"
vpc\_id: "The VPC for security groups of the action runners. If not set uses the value of `var.vpc_id`."
subnet\_ids: "List of subnets in which the action runners will be launched, the subnets needs to be subnets in the `vpc_id`. If not set, uses the value of `var.subnet_ids`."
idle\_config: "List of time period that can be defined as cron expression to keep a minimum amount of runners active instead of scaling down to 0. By defining this list you can ensure that in time periods that match the cron expression within 5 seconds a runner is kept idle."
license\_specifications: "Optional EC2 License Manager license configuration ARNs for the runner launch template. Required for macOS dedicated-host runners when the host resource group uses a Mac dedicated host license configuration."
use\_dedicated\_host: "Experimental! Can be removed / changed without trigger a major release. Whether to use EC2 dedicated hosts for the runners. Needed for macos runners Note that using dedicated hosts can increase cost significantly."
runner\_log\_files: "(optional) Replaces the module default cloudwatch log config. See https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Agent-Configuration-File-Details.html for details."
block\_device\_mappings: "The EC2 instance block device configuration. Takes the following keys: `device_name`, `delete_on_termination`, `volume_type`, `volume_size`, `encrypted`, `iops`, `throughput`, `kms_key_id`, `snapshot_id`, `volume_initialization_rate`."
job\_retry: "Experimental! Can be removed / changed without trigger a major release. Configure job retries. The configuration enables job retries (for ephemeral runners). After creating the instances a message will be published to a job retry queue. The job retry check lambda is checking after a delay if the job is queued. If not the message will be published again on the scale-up (build queue). Using this feature can impact the rate limit of the GitHub app."
pool\_config: "The configuration for updating the pool. The `pool_size` to adjust to by the events triggered by the `schedule_expression`. For example you can configure a cron expression for week days to adjust the pool to 10 and another expression for the weekend to adjust the pool to 1. Use `schedule_expression_timezone` to override the schedule time zone (defaults to UTC)."
iam\_overrides: "Allows to (optionally) override the instance profile and runner role created by the module. Set `override_instance_profile` to true and provide the `instance_profile_name` to use an existing instance profile. Set `override_runner_role` to true and provide the `runner_role_arn` to use an existing role for the runner instances."
}
# V2 contract
tags: "Tags applied to resources created for this runner configuration."
runner: "Runner settings such as the operating system, architecture, labels, hooks, runner group, name prefix, and IAM role configuration."
lambda: "Lambda settings such as runtime, architecture, networking, tags, and execution-role options for this runner configuration."
# Webhook, queue, and scale-up/scale-down orchestration settings.
orchestration\_provider: {
webhook: {
matcherConfig: "Label matching and dynamic-label policy used to route workflow jobs to this runner configuration."
runner: "Runner lifecycle settings including boot time, ephemeral mode, JIT configuration, and maximum runner count."
queue: "Build queue delay, retention, visibility timeout, redrive, and tags."
}
}
ssm: "SSM parameter paths, tags, and housekeeper settings for runner configuration storage."
observability: "Logging, tracing, and metric settings for the resources in this runner configuration."
# Compute settings for the runner provider.
compute\_provider: {
aws: {
ec2: "AWS EC2 runner settings, including AMI selection, instance types, capacity strategy, VPC and subnet placement, storage, user data, and runner access."
}
}
matcherConfig: {
labelMatchers: "The list of list of labels supported by the runner configuration. `[[self-hosted, linux, x64, example]]`"
exactMatch: "DEPRECATED: Use `bidirectionalLabelMatch` instead. If set to true all labels in the workflow job must match the GitHub labels (os, architecture and `self-hosted`). When false if __any__ workflow label matches it will trigger the webhook. Note: this only checks that workflow labels are a subset of runner labels, not the reverse."
bidirectionalLabelMatch: "If set to true, the runner labels and workflow job labels must be an exact two-way match (same set, any order, no extras or missing labels). This is stricter than `exactMatch` which only checks that workflow labels are a subset of runner labels. When false, if __any__ workflow label matches it will trigger the webhook."
priority: "If set it defines the priority of the matcher, the matcher with the lowest priority will be evaluated first. Default is 999, allowed values 0-999."
enableDynamicLabels: "Experimental! When true the dispatcher allows `ghr-*` dynamic labels for jobs routed to this runner. Default false."
awsDynamicLabelsPolicy: "Optional AWS dynamic label policy evaluated by the dispatcher. Only effective when `enableDynamicLabels = true`. Jobs whose provider dynamic labels violate every matching runner's policy are rejected with a 202 (a warning is logged). Evaluation: keys in `blocked_keys` are always rejected; keys in `restricted_keys` are allowed only when their value passes the rule; unlisted keys are allowed. Schema: `{ blocked_keys = [], restricted_keys = { = { allowed = [globs], denied = [globs], max = number|string } } }`. Keys use the dynamic label suffix, e.g. `instance-type` for `ghr-ec2-instance-type`."
}
redrive\_build\_queue: "Set options to attach (optional) a dead letter queue to the build queue, the queue between the webhook and the scale up lambda. You have the following options. 1. Disable by setting `enabled` to false. 2. Enable by setting `enabled` to `true`, `maxReceiveCount` to a number of max retries."
} |
map(object({
# V1 contract
runner_config = optional(object({
runner_os = string
runner_architecture = string
runner_metadata_options = optional(map(any), {
instance_metadata_tags = "enabled"
http_endpoint = "enabled"
http_tokens = "required"
http_put_response_hop_limit = 1
})
ami = optional(object({
filter = optional(map(list(string)), { state = ["available"] })
owners = optional(list(string), ["amazon"])
id_ssm_parameter_arn = optional(string, null)
kms_key_arn = optional(string, null)
}), null)
create_service_linked_role_spot = optional(bool, false)
credit_specification = optional(string, null)
delay_webhook_event = optional(number, 30)
disable_runner_autoupdate = optional(bool, false)
ebs_optimized = optional(bool, false)
enable_ephemeral_runners = optional(bool, false)
enable_job_queued_check = optional(bool, null)
enable_on_demand_failover_for_errors = optional(list(string), [])
scale_errors = optional(list(string), [
"UnfulfillableCapacity",
"MaxSpotInstanceCountExceeded",
"TargetCapacityLimitExceededException",
"RequestLimitExceeded",
"ResourceLimitExceeded",
"MaxSpotInstanceCountExceeded",
"MaxSpotFleetRequestCountExceeded",
"InsufficientInstanceCapacity",
"InsufficientCapacityOnHost",
])
enable_organization_runners = optional(bool, false)
enable_runner_binaries_syncer = optional(bool, true)
enable_ssm_on_runners = optional(bool, false)
enable_userdata = optional(bool, true)
instance_allocation_strategy = optional(string, "lowest-price")
instance_type_priorities = optional(map(number), null)
instance_max_spot_price = optional(string, null)
instance_target_capacity_type = optional(string, "spot")
instance_types = list(string)
job_queue_retention_in_seconds = optional(number, 86400)
minimum_running_time_in_minutes = optional(number, null)
pool_runner_owner = optional(string, null)
runner_as_root = optional(bool, false)
runner_boot_time_in_minutes = optional(number, 5)
runner_disable_default_labels = optional(bool, false)
runner_extra_labels = optional(list(string), [])
runner_group_name = optional(string, "Default")
runner_name_prefix = optional(string, "")
runner_run_as = optional(string, "ec2-user")
runners_maximum_count = number
runner_additional_security_group_ids = optional(list(string), [])
scale_down_schedule_expression = optional(string, "cron(*/5 * * * ? *)")
scale_up_reserved_concurrent_executions = optional(number, 1)
lambda_event_source_mapping_batch_size = optional(number, null)
lambda_event_source_mapping_maximum_batching_window_in_seconds = optional(number, null)
userdata_template = optional(string, null)
userdata_content = optional(string, null)
enable_jit_config = optional(bool, null)
enable_runner_detailed_monitoring = optional(bool, false)
enable_cloudwatch_agent = optional(bool, true)
cloudwatch_config = optional(string, null)
userdata_pre_install = optional(string, "")
userdata_post_install = optional(string, "")
runner_hook_job_started = optional(string, "")
runner_hook_job_completed = optional(string, "")
runner_ec2_tags = optional(map(string), {})
runner_iam_role_managed_policy_arns = optional(list(string), [])
vpc_id = optional(string, null)
subnet_ids = optional(list(string), null)
idle_config = optional(list(object({
cron = string
timeZone = string
idleCount = number
evictionStrategy = optional(string, "oldest_first")
})), [])
cpu_options = optional(object({
core_count = optional(number)
threads_per_core = optional(number)
amd_sev_snp = optional(string)
nested_virtualization = optional(string)
}), null)
placement = optional(object({
affinity = optional(string)
availability_zone = optional(string)
group_id = optional(string)
group_name = optional(string)
host_id = optional(string)
host_resource_group_arn = optional(string)
spread_domain = optional(string)
tenancy = optional(string)
partition_number = optional(number)
}), null)
license_specifications = optional(list(object({
license_configuration_arn = string
})), [])
use_dedicated_host = optional(bool, false)
runner_log_files = optional(list(object({
log_group_name = string
prefix_log_group = bool
file_path = string
log_stream_name = string
log_class = optional(string, "STANDARD")
})), null)
block_device_mappings = optional(list(object({
delete_on_termination = optional(bool, true)
device_name = optional(string, "/dev/xvda")
encrypted = optional(bool, true)
iops = optional(number)
kms_key_id = optional(string)
snapshot_id = optional(string)
throughput = optional(number)
volume_initialization_rate = optional(number)
volume_size = number
volume_type = optional(string, "gp3")
})), [{
volume_size = 30
}])
pool_config = optional(list(object({
schedule_expression = string
schedule_expression_timezone = optional(string)
size = number
})), [])
job_retry = optional(object({
enable = optional(bool, false)
delay_in_seconds = optional(number, 300)
delay_backoff = optional(number, 2)
lambda_memory_size = optional(number, 256)
lambda_timeout = optional(number, 30)
max_attempts = optional(number, 1)
}), {})
iam_overrides = optional(object({
override_instance_profile = optional(bool, null)
instance_profile_name = optional(string, null)
override_runner_role = optional(bool, null)
runner_role_arn = optional(string, null)
}), {
override_instance_profile = false
instance_profile_name = null
override_runner_role = false
runner_role_arn = null
})
}), null)
matcherConfig = optional(object({
labelMatchers = list(list(string))
exactMatch = optional(bool, false)
bidirectionalLabelMatch = optional(bool, false)
priority = optional(number, 999)
enableDynamicLabels = optional(bool, false)
awsDynamicLabelsPolicy = optional(any, null)
}), null)
redrive_build_queue = optional(object({
enabled = bool
maxReceiveCount = number
}), {
enabled = false
maxReceiveCount = null
})

# V2 Contract
tags = optional(map(string), {})

runner = optional(object({
os = optional(string, null)
architecture = optional(string, null)
disable_default_labels = optional(bool, null)
extra_labels = optional(list(string), null)
group_name = optional(string, null)
name_prefix = optional(string, null)
run_as_root = optional(bool, null)
run_as = optional(string, null)
auto_update_disabled = optional(bool, null)
tags = optional(map(string), {})
hooks = optional(object({
job_started = optional(string, null)
job_completed = optional(string, null)
}), {})
iam = optional(object({
role = optional(object({
arn = string
}), null)
managed_policy_arns = optional(map(string), null)
additional_trust_policy_json = optional(string, null)
path = optional(string, null)
permissions_boundary = optional(string, null)
}), {})
}), {})

lambda = optional(object({
runtime = optional(string, null)
architecture = optional(string, null)
subnet_ids = optional(list(string), null)
security_group_ids = optional(list(string), null)
tags = optional(map(string), {})
role = optional(object({
path = optional(string, null)
permissions_boundary = optional(string, null)
}), {})
}), {})

orchestration_provider = optional(object({
webhook = optional(object({
runner = optional(object({
boot_time_in_minutes = optional(number, null)
ephemeral = optional(bool, null)
jit_config_enabled = optional(bool, null)
maximum_count = optional(number, null)
}), {})
github = optional(object({
organization_runners = optional(bool, false)
}), {})
matcherConfig = optional(object({
labelMatchers = list(list(string))
exactMatch = optional(bool, false)
bidirectionalLabelMatch = optional(bool, false)
priority = optional(number, 999)
dynamic_labels_enabled = optional(bool, false)
awsDynamicLabelsPolicy = optional(object({
blocked_keys = optional(list(string), [])
restricted_keys = optional(map(object({
allowed = optional(list(string), [])
denied = optional(list(string), [])
max = optional(string, null)
})), {})
}), null)
}), null)
queue = optional(object({
delay_webhook_event = optional(number, null)
job_queue_retention_in_seconds = optional(number, null)
visibility_timeout_seconds = optional(number, null)
redrive_build_queue = optional(object({
enabled = optional(bool, null)
maxReceiveCount = optional(number, null)
}), null)
tags = optional(map(string), {})
}), {})
lambda = optional(object({
scale = optional(object({
up = optional(object({
memory_size = optional(number, null)
timeout = optional(number, null)
reserved_concurrent_executions = optional(number, null)
job_queued_check_enabled = optional(bool, null)
event_source_mapping = optional(object({
batch_size = optional(number, null)
maximum_batching_window_in_seconds = optional(number, null)
}), {})
tags = optional(map(string), {})
}), {})
down = optional(object({
memory_size = optional(number, null)
timeout = optional(number, null)
schedule_expression = optional(string, null)
minimum_running_time_in_minutes = optional(number, null)
idle_config = optional(list(object({
cron = string
timeZone = string
idleCount = number
evictionStrategy = optional(string, "oldest_first")
})), null)
tags = optional(map(string), {})
}), {})
}), {})
pool = optional(object({
memory_size = optional(number, null)
timeout = optional(number, null)
reserved_concurrent_executions = optional(number, null)
config = optional(list(object({
schedule_expression = string
schedule_expression_timezone = optional(string)
size = number
})), null)
include_busy_runners = optional(bool, null)
runner_owner = optional(string, null)
tags = optional(map(string), {})
}), {})
}), {})
job_retry = optional(object({
enabled = optional(bool, false)
delay_in_seconds = optional(number, 300)
delay_backoff = optional(number, 2)
max_attempts = optional(number, 1)
tags = optional(map(string), {})
lambda = optional(object({
memory_size = optional(number, 256)
reserved_concurrent_executions = optional(number, 1)
timeout = optional(number, 30)
}), {})
}), {})
}), null)
}), {})

ssm = optional(object({
paths = optional(object({
root = optional(string, null)
tokens = optional(string, null)
config = optional(string, null)
}), {})
tags = optional(map(string), {})
parameters = optional(object({
tags = optional(map(string), {})
}), {})
housekeeper = optional(object({
schedule_expression = optional(string, null)
state = optional(string, null)
tags = optional(map(string), {})
lambda = optional(object({
artifact = optional(object({
zip = optional(string, null)
s3 = optional(object({
key = string
object_version = optional(string, null)
}), null)
}), {})
memory_size = optional(number, null)
timeout = optional(number, null)
}), {})
config = optional(object({
tokenPath = optional(string, null)
minimumDaysOld = optional(number, null)
dryRun = optional(bool, null)
}), {})
}), {})
}), {})

observability = optional(object({
logs = optional(object({
level = optional(string, null)
retention_in_days = optional(number, null)
kms_key_id = optional(string, null)
class = optional(string, null)
tags = optional(map(string), {})
}), {})
tracing = optional(object({
mode = optional(string, null)
capture_http_requests = optional(bool, null)
capture_error = optional(bool, null)
}), {})
metrics = optional(object({
enabled = optional(bool, null)
namespace = optional(string, null)
metric = optional(object({
github_app_rate_limit = optional(object({
enabled = optional(bool, null)
}), {})
job_retry = optional(object({
enabled = optional(bool, null)
}), {})
spot_termination_warning = optional(object({
enabled = optional(bool, null)
}), {})
}), {})
}), {})
}), {})

compute_provider = optional(object({
aws = optional(object({
ec2 = optional(object({
metadata_options = optional(object({
instance_metadata_tags = optional(string, "enabled")
http_endpoint = optional(string, "enabled")
http_tokens = optional(string, "required")
http_put_response_hop_limit = optional(number, 1)
}), {})
ami = optional(object({
filter = optional(map(list(string)), { state = ["available"] })
owners = optional(list(string), ["amazon"])
id_ssm_parameter = optional(object({
arn = string
}), null)
kms_key = optional(object({
arn = string
}), null)
}), null)
block_device_mappings = optional(list(object({
delete_on_termination = optional(bool, true)
device_name = optional(string, "/dev/xvda")
encrypted = optional(bool, true)
iops = optional(number)
kms_key_id = optional(string)
snapshot_id = optional(string)
throughput = optional(number)
volume_initialization_rate = optional(number)
volume_size = number
volume_type = optional(string, "gp3")
})), [{ volume_size = 30 }])
create_service_linked_role_spot = optional(bool, false)
credit_specification = optional(string, null)
ebs_optimized = optional(bool, false)
cloudwatch_agent = optional(object({
enabled = optional(bool, true)
config = optional(string, null)
}), {})
binaries_syncer = optional(object({
enabled = optional(bool, null)
}), {})
detailed_monitoring_enabled = optional(bool, false)
ssm_enabled = optional(bool, false)
user_data = optional(object({
enabled = optional(bool, true)
template = optional(string, null)
content = optional(string, null)
pre_install = optional(string, "")
post_install = optional(string, "")
debug_logging_enabled = optional(bool, false)
}), {})
instance_allocation_strategy = optional(string, "lowest-price")
instance_max_spot_price = optional(string, null)
instance_target_capacity_type = optional(string, "spot")
instance_type_priorities = optional(map(number), null)
instance_types = optional(list(string), [])
additional_security_group_ids = optional(list(string), null)
managed_security_group_enabled = optional(bool, null)
egress_rules = optional(list(object({
cidr_blocks = list(string)
ipv6_cidr_blocks = list(string)
prefix_list_ids = list(string)
from_port = number
protocol = string
security_groups = list(string)
self = bool
to_port = number
description = string
})), null)
instance_profile_path = optional(string, null)
key_name = optional(string, null)
associate_public_ipv4_address = optional(bool, null)
instance_profile = optional(object({
name = string
}), null)
on_demand_failover_for_errors = optional(list(string), [])
scale_errors = optional(list(string), [
"UnfulfillableCapacity",
"MaxSpotInstanceCountExceeded",
"TargetCapacityLimitExceededException",
"RequestLimitExceeded",
"ResourceLimitExceeded",
"MaxSpotInstanceCountExceeded",
"MaxSpotFleetRequestCountExceeded",
"InsufficientInstanceCapacity",
"InsufficientCapacityOnHost",
])
subnet_ids = optional(list(string), null)
vpc_id = optional(string, null)
cpu_options = optional(object({
core_count = optional(number)
threads_per_core = optional(number)
amd_sev_snp = optional(string)
nested_virtualization = optional(string)
}), null)
placement = optional(object({
affinity = optional(string)
availability_zone = optional(string)
group_id = optional(string)
group_name = optional(string)
host_id = optional(string)
host_resource_group_arn = optional(string)
spread_domain = optional(string)
tenancy = optional(string)
partition_number = optional(number)
}), null)
license_specifications = optional(list(object({
license_configuration_arn = string
})), [])
use_dedicated_host = optional(bool, false)
log_files = optional(list(object({
log_group_name = string
prefix_log_group = bool
file_path = string
log_stream_name = string
log_class = optional(string, "STANDARD")
})), null)
tags = optional(map(string), {})
}), null)
}), {})
}), {})
}))
| n/a | yes | +| [multi\_runner\_config](#input\_multi\_runner\_config) | Accepts either the stable v1 runner configuration shape or the provider-boundary v2 shape. Entries with `runner_config` use the v1 shape; entries without `runner_config` use the v2 shape. A v2 entry does not need matcher configuration. A v2 entry must be acknowledged with `experimental_features = ["multi-runner-v2"]`; the v2 shape is experimental and may change before graduation.

multi\_runner\_config = {
runner\_config: {
runner\_os: "The EC2 Operating System type to use for action runner instances (linux, osx, windows)."
runner\_architecture: "The platform architecture of the runner instance\_type."
runner\_metadata\_options: "(Optional) Metadata options for the ec2 runner instances."
ami: "(Optional) AMI configuration for the action runner instances. This object allows you to specify all AMI-related settings in one place."
create\_service\_linked\_role\_spot: (Optional) create the serviced linked role for spot instances that is required by the scale-up lambda.
credit\_specification: "(Optional) The credit specification of the runner instance\_type. Can be unset, `standard` or `unlimited`.
delay\_webhook\_event: "The number of seconds the event accepted by the webhook is invisible on the queue before the scale up lambda will receive the event."
disable\_runner\_autoupdate: "Disable the auto update of the github runner agent. Be aware there is a grace period of 30 days, see also the [GitHub article](https://github.blog/changelog/2022-02-01-github-actions-self-hosted-runners-can-now-disable-automatic-updates/)"
ebs\_optimized: "The EC2 EBS optimized configuration."
enable\_ephemeral\_runners: "Enable ephemeral runners, runners will only be used once."
enable\_job\_queued\_check: Enables JIT configuration for creating runners instead of registration token based registraton. JIT configuration will only be applied for ephemeral runners. By default JIT configuration is enabled for ephemeral runners an can be disabled via this override. When running on GHES without support for JIT configuration this variable should be set to true for ephemeral runners."
enable\_on\_demand\_failover\_for\_errors: "Enable on-demand failover. For example to fall back to on demand when no spot capacity is available the variable can be set to `InsufficientInstanceCapacity`. When not defined the default behavior is to retry later."
scale\_errors: "List of AWS error codes that should trigger retry during scale up. This list replaces the module default scale-up retry errors"
enable\_organization\_runners: "Register runners to organization, instead of repo level"
enable\_runner\_binaries\_syncer: "Option to disable the lambda to sync GitHub runner distribution, useful when using a pre-build AMI."
enable\_ssm\_on\_runners: "Enable to allow access the runner instances for debugging purposes via SSM. Note that this adds additional permissions to the runner instances."
enable\_userdata: "Should the userdata script be enabled for the runner. Set this to false if you are using your own prebuilt AMI."
instance\_allocation\_strategy: "The allocation strategy for creating instances. For spot, AWS recommends `price-capacity-optimized`; for on-demand, use `lowest-price` or `prioritized`. The AWS default is `lowest-price`."
instance\_type\_priorities: "A map of instance type to priority for the `prioritized` and `capacity-optimized-prioritized` allocation strategies. Lower numbers mean higher priority. If not provided, priorities are assigned based on the order of `instance_types`."
instance\_max\_spot\_price: "Max price price for spot instances per hour. This variable will be passed to the create fleet as max spot price for the fleet."
instance\_target\_capacity\_type: "Default lifecycle used for runner instances, can be either `spot` or `on-demand`."
instance\_types: "List of instance types for the action runner. Defaults are based on runner\_os (al2023 for linux, macOS Sequoia for osx, Windows Server Core for win)."
job\_queue\_retention\_in\_seconds: "The number of seconds the job is held in the queue before it is purged"
minimum\_running\_time\_in\_minutes: "The time an ec2 action runner should be running at minimum before terminated if not busy."
pool\_runner\_owner: "The pool will deploy runners to the GitHub org ID, set this value to the org to which you want the runners deployed. Repo level is not supported."
runner\_additional\_security\_group\_ids: "List of additional security groups IDs to apply to the runner. If added outside the multi\_runner\_config block, the additional security group(s) will be applied to all runner configs. If added inside the multi\_runner\_config, the additional security group(s) will be applied to the individual runner."
runner\_as\_root: "Run the action runner under the root user. Variable `runner_run_as` will be ignored."
runner\_boot\_time\_in\_minutes: "The minimum time for an EC2 runner to boot and register as a runner."
scale\_down\_idle\_confirmation\_seconds: "Number of seconds a runner must consistently report not-busy before scale-down terminates it. GitHub's busy flag can be stale, so a single not-busy reading is not sufficient evidence a runner is idle. 0 keeps the previous single-reading behaviour."
runner\_disable\_default\_labels: "Disable default labels for the runners (os, architecture and `self-hosted`). If enabled, the runner will only have the extra labels provided in `runner_extra_labels`. In case you on own start script is used, this configuration parameter needs to be parsed via SSM."
runner\_extra\_labels: "Extra (custom) labels for the runners (GitHub). Separate each label by a comma. Labels checks on the webhook can be enforced by setting `multi_runner_config.matcherConfig.exactMatch`. GitHub read-only labels should not be provided."
runner\_group\_name: "Name of the runner group."
runner\_name\_prefix: "Prefix for the GitHub runner name."
runner\_run\_as: "Run the GitHub actions agent as user."
runners\_maximum\_count: "The maximum number of runners that will be created. Setting the variable to `-1` disables the maximum check."
scale\_down\_schedule\_expression: "Scheduler expression to check every x for scale down."
scale\_up\_reserved\_concurrent\_executions: "Amount of reserved concurrent executions for the scale-up lambda function. A value of 0 disables lambda from being triggered and -1 removes any concurrency limitations."
lambda\_event\_source\_mapping\_batch\_size: "(Optional) Maximum number of records per Lambda invocation for this runner flavor. Overrides the module-level `lambda_event_source_mapping_batch_size` when set."
lambda\_event\_source\_mapping\_maximum\_batching\_window\_in\_seconds: "(Optional) Maximum seconds to gather records before invoking Lambda for this runner flavor. Overrides the module-level `lambda_event_source_mapping_maximum_batching_window_in_seconds` when set."
userdata\_template: "Alternative user-data template, replacing the default template. By providing your own user\_data you have to take care of installing all required software, including the action runner. Variables userdata\_pre/post\_install are ignored."
enable\_jit\_config: "Overwrite the default behavior for JIT configuration. By default JIT configuration is enabled for ephemeral runners and disabled for non-ephemeral runners. In case of GHES check first if the JIT config API is available. In case you are upgrading from 3.x to 4.x you can set `enable_jit_config` to `false` to avoid a breaking change when having your own AMI."
enable\_runner\_detailed\_monitoring: "Should detailed monitoring be enabled for the runner. Set this to true if you want to use detailed monitoring. See https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-cloudwatch-new.html for details."
enable\_cloudwatch\_agent: "Enabling the cloudwatch agent on the ec2 runner instances, the runner contains default config. Configuration can be overridden via `cloudwatch_config`."
cloudwatch\_config: "(optional) Replaces the module default cloudwatch log config. See https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Agent-Configuration-File-Details.html for details."
userdata\_pre\_install: "Script to be ran before the GitHub Actions runner is installed on the EC2 instances"
userdata\_post\_install: "Script to be ran after the GitHub Actions runner is installed on the EC2 instances"
runner\_hook\_job\_started: "Script to be ran in the runner environment at the beginning of every job"
runner\_hook\_job\_completed: "Script to be ran in the runner environment at the end of every job"
runner\_ec2\_tags: "Map of tags that will be added to the launch template instance tag specifications."
runner\_iam\_role\_managed\_policy\_arns: "Attach AWS or customer-managed IAM policies (by ARN) to the runner IAM role"
vpc\_id: "The VPC for security groups of the action runners. If not set uses the value of `var.vpc_id`."
subnet\_ids: "List of subnets in which the action runners will be launched, the subnets needs to be subnets in the `vpc_id`. If not set, uses the value of `var.subnet_ids`."
idle\_config: "List of time period that can be defined as cron expression to keep a minimum amount of runners active instead of scaling down to 0. By defining this list you can ensure that in time periods that match the cron expression within 5 seconds a runner is kept idle."
license\_specifications: "Optional EC2 License Manager license configuration ARNs for the runner launch template. Required for macOS dedicated-host runners when the host resource group uses a Mac dedicated host license configuration."
use\_dedicated\_host: "Experimental! Can be removed / changed without trigger a major release. Whether to use EC2 dedicated hosts for the runners. Needed for macos runners Note that using dedicated hosts can increase cost significantly."
runner\_log\_files: "(optional) Replaces the module default cloudwatch log config. See https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Agent-Configuration-File-Details.html for details."
block\_device\_mappings: "The EC2 instance block device configuration. Takes the following keys: `device_name`, `delete_on_termination`, `volume_type`, `volume_size`, `encrypted`, `iops`, `throughput`, `kms_key_id`, `snapshot_id`, `volume_initialization_rate`."
job\_retry: "Experimental! Can be removed / changed without trigger a major release. Configure job retries. The configuration enables job retries (for ephemeral runners). After creating the instances a message will be published to a job retry queue. The job retry check lambda is checking after a delay if the job is queued. If not the message will be published again on the scale-up (build queue). Using this feature can impact the rate limit of the GitHub app."
pool\_config: "The configuration for updating the pool. The `pool_size` to adjust to by the events triggered by the `schedule_expression`. For example you can configure a cron expression for week days to adjust the pool to 10 and another expression for the weekend to adjust the pool to 1. Use `schedule_expression_timezone` to override the schedule time zone (defaults to UTC)."
ssm\_token\_ttl\_seconds: "Optional TTL in seconds for the SSM parameters holding the runner registration token / JIT config. When set, the parameters are created with an SSM expiration policy so SSM deletes them itself after the TTL passes. Requires the Advanced parameter tier for every token parameter, which incurs additional costs. Expiration is enforced asynchronously by SSM; the SSM housekeeper lambda remains as a backstop. Must be a positive number, and should comfortably exceed the runner boot time so the config does not expire before the instance reads it."
iam\_overrides: "Allows to (optionally) override the instance profile and runner role created by the module. Set `override_instance_profile` to true and provide the `instance_profile_name` to use an existing instance profile. Set `override_runner_role` to true and provide the `runner_role_arn` to use an existing role for the runner instances."
}
# V2 contract
tags: "Tags applied to resources created for this runner configuration."
runner: "Runner settings such as the operating system, architecture, labels, hooks, runner group, name prefix, and IAM role configuration."
lambda: "Lambda settings such as runtime, architecture, networking, tags, and execution-role options for this runner configuration."
# Webhook, queue, and scale-up/scale-down orchestration settings.
orchestration\_provider: {
webhook: {
matcherConfig: "Label matching and dynamic-label policy used to route workflow jobs to this runner configuration."
runner: "Runner lifecycle settings including boot time, ephemeral mode, JIT configuration, and maximum runner count."
queue: "Build queue delay, retention, visibility timeout, redrive, and tags."
}
}
ssm: "SSM parameter paths, tags, and housekeeper settings for runner configuration storage."
observability: "Logging, tracing, and metric settings for the resources in this runner configuration."
# Compute settings for the runner provider.
compute\_provider: {
aws: {
ec2: "AWS EC2 runner settings, including AMI selection, instance types, capacity strategy, VPC and subnet placement, storage, user data, and runner access."
}
}
matcherConfig: {
labelMatchers: "The list of list of labels supported by the runner configuration. `[[self-hosted, linux, x64, example]]`"
exactMatch: "DEPRECATED: Use `bidirectionalLabelMatch` instead. If set to true all labels in the workflow job must match the GitHub labels (os, architecture and `self-hosted`). When false if __any__ workflow label matches it will trigger the webhook. Note: this only checks that workflow labels are a subset of runner labels, not the reverse."
bidirectionalLabelMatch: "If set to true, the runner labels and workflow job labels must be an exact two-way match (same set, any order, no extras or missing labels). This is stricter than `exactMatch` which only checks that workflow labels are a subset of runner labels. When false, if __any__ workflow label matches it will trigger the webhook."
priority: "If set it defines the priority of the matcher, the matcher with the lowest priority will be evaluated first. Default is 999, allowed values 0-999."
enableDynamicLabels: "Experimental! When true the dispatcher allows `ghr-*` dynamic labels for jobs routed to this runner. Default false."
awsDynamicLabelsPolicy: "Optional AWS dynamic label policy evaluated by the dispatcher. Only effective when `enableDynamicLabels = true`. Jobs whose provider dynamic labels violate every matching runner's policy are rejected with a 202 (a warning is logged). Evaluation: keys in `blocked_keys` are always rejected; keys in `restricted_keys` are allowed only when their value passes the rule; unlisted keys are allowed. Schema: `{ blocked_keys = [], restricted_keys = { = { allowed = [globs], denied = [globs], max = number|string } } }`. Keys use the dynamic label suffix, e.g. `instance-type` for `ghr-ec2-instance-type`."
}
redrive\_build\_queue: "Set options to attach (optional) a dead letter queue to the build queue, the queue between the webhook and the scale up lambda. You have the following options. 1. Disable by setting `enabled` to false. 2. Enable by setting `enabled` to `true`, `maxReceiveCount` to a number of max retries."
} |
map(object({
# V1 contract
runner_config = optional(object({
runner_os = string
runner_architecture = string
runner_metadata_options = optional(map(any), {
instance_metadata_tags = "enabled"
http_endpoint = "enabled"
http_tokens = "required"
http_put_response_hop_limit = 1
})
ami = optional(object({
filter = optional(map(list(string)), { state = ["available"] })
owners = optional(list(string), ["amazon"])
id_ssm_parameter_arn = optional(string, null)
kms_key_arn = optional(string, null)
}), null)
create_service_linked_role_spot = optional(bool, false)
credit_specification = optional(string, null)
delay_webhook_event = optional(number, 30)
disable_runner_autoupdate = optional(bool, false)
ebs_optimized = optional(bool, false)
enable_ephemeral_runners = optional(bool, false)
enable_job_queued_check = optional(bool, null)
enable_on_demand_failover_for_errors = optional(list(string), [])
scale_errors = optional(list(string), [
"UnfulfillableCapacity",
"MaxSpotInstanceCountExceeded",
"TargetCapacityLimitExceededException",
"RequestLimitExceeded",
"ResourceLimitExceeded",
"MaxSpotInstanceCountExceeded",
"MaxSpotFleetRequestCountExceeded",
"InsufficientInstanceCapacity",
"InsufficientCapacityOnHost",
])
enable_organization_runners = optional(bool, false)
enable_runner_binaries_syncer = optional(bool, true)
enable_ssm_on_runners = optional(bool, false)
enable_userdata = optional(bool, true)
instance_allocation_strategy = optional(string, "lowest-price")
instance_type_priorities = optional(map(number), null)
instance_max_spot_price = optional(string, null)
instance_target_capacity_type = optional(string, "spot")
instance_types = list(string)
job_queue_retention_in_seconds = optional(number, 86400)
minimum_running_time_in_minutes = optional(number, null)
pool_runner_owner = optional(string, null)
runner_as_root = optional(bool, false)
runner_boot_time_in_minutes = optional(number, 5)
scale_down_idle_confirmation_seconds = optional(number, 0)
runner_disable_default_labels = optional(bool, false)
runner_extra_labels = optional(list(string), [])
runner_group_name = optional(string, "Default")
runner_name_prefix = optional(string, "")
runner_run_as = optional(string, "ec2-user")
runners_maximum_count = number
runner_additional_security_group_ids = optional(list(string), [])
scale_down_schedule_expression = optional(string, "cron(*/5 * * * ? *)")
scale_up_reserved_concurrent_executions = optional(number, 1)
lambda_event_source_mapping_batch_size = optional(number, null)
lambda_event_source_mapping_maximum_batching_window_in_seconds = optional(number, null)
userdata_template = optional(string, null)
userdata_content = optional(string, null)
enable_jit_config = optional(bool, null)
enable_runner_detailed_monitoring = optional(bool, false)
enable_cloudwatch_agent = optional(bool, true)
cloudwatch_config = optional(string, null)
userdata_pre_install = optional(string, "")
userdata_post_install = optional(string, "")
runner_hook_job_started = optional(string, "")
runner_hook_job_completed = optional(string, "")
runner_ec2_tags = optional(map(string), {})
runner_iam_role_managed_policy_arns = optional(list(string), [])
vpc_id = optional(string, null)
subnet_ids = optional(list(string), null)
idle_config = optional(list(object({
cron = string
timeZone = string
idleCount = number
evictionStrategy = optional(string, "oldest_first")
})), [])
cpu_options = optional(object({
core_count = optional(number)
threads_per_core = optional(number)
amd_sev_snp = optional(string)
nested_virtualization = optional(string)
}), null)
placement = optional(object({
affinity = optional(string)
availability_zone = optional(string)
group_id = optional(string)
group_name = optional(string)
host_id = optional(string)
host_resource_group_arn = optional(string)
spread_domain = optional(string)
tenancy = optional(string)
partition_number = optional(number)
}), null)
license_specifications = optional(list(object({
license_configuration_arn = string
})), [])
use_dedicated_host = optional(bool, false)
runner_log_files = optional(list(object({
log_group_name = string
prefix_log_group = bool
file_path = string
log_stream_name = string
log_class = optional(string, "STANDARD")
})), null)
block_device_mappings = optional(list(object({
delete_on_termination = optional(bool, true)
device_name = optional(string, "/dev/xvda")
encrypted = optional(bool, true)
iops = optional(number)
kms_key_id = optional(string)
snapshot_id = optional(string)
throughput = optional(number)
volume_initialization_rate = optional(number)
volume_size = number
volume_type = optional(string, "gp3")
})), [{
volume_size = 30
}])
pool_config = optional(list(object({
schedule_expression = string
schedule_expression_timezone = optional(string)
size = number
})), [])
ssm_token_ttl_seconds = optional(number, null)
job_retry = optional(object({
enable = optional(bool, false)
delay_in_seconds = optional(number, 300)
delay_backoff = optional(number, 2)
lambda_memory_size = optional(number, 256)
lambda_timeout = optional(number, 30)
max_attempts = optional(number, 1)
}), {})
iam_overrides = optional(object({
override_instance_profile = optional(bool, null)
instance_profile_name = optional(string, null)
override_runner_role = optional(bool, null)
runner_role_arn = optional(string, null)
}), {
override_instance_profile = false
instance_profile_name = null
override_runner_role = false
runner_role_arn = null
})
}), null)
matcherConfig = optional(object({
labelMatchers = list(list(string))
exactMatch = optional(bool, false)
bidirectionalLabelMatch = optional(bool, false)
priority = optional(number, 999)
enableDynamicLabels = optional(bool, false)
awsDynamicLabelsPolicy = optional(any, null)
}), null)
redrive_build_queue = optional(object({
enabled = bool
maxReceiveCount = number
}), {
enabled = false
maxReceiveCount = null
})

# V2 Contract
tags = optional(map(string), {})

runner = optional(object({
os = optional(string, null)
architecture = optional(string, null)
disable_default_labels = optional(bool, null)
extra_labels = optional(list(string), null)
group_name = optional(string, null)
name_prefix = optional(string, null)
run_as_root = optional(bool, null)
run_as = optional(string, null)
auto_update_disabled = optional(bool, null)
tags = optional(map(string), {})
hooks = optional(object({
job_started = optional(string, null)
job_completed = optional(string, null)
}), {})
iam = optional(object({
role = optional(object({
arn = string
}), null)
managed_policy_arns = optional(map(string), null)
additional_trust_policy_json = optional(string, null)
path = optional(string, null)
permissions_boundary = optional(string, null)
}), {})
}), {})

lambda = optional(object({
runtime = optional(string, null)
architecture = optional(string, null)
subnet_ids = optional(list(string), null)
security_group_ids = optional(list(string), null)
tags = optional(map(string), {})
role = optional(object({
path = optional(string, null)
permissions_boundary = optional(string, null)
}), {})
}), {})

orchestration_provider = optional(object({
webhook = optional(object({
runner = optional(object({
boot_time_in_minutes = optional(number, null)
ephemeral = optional(bool, null)
jit_config_enabled = optional(bool, null)
maximum_count = optional(number, null)
}), {})
github = optional(object({
organization_runners = optional(bool, false)
}), {})
matcherConfig = optional(object({
labelMatchers = list(list(string))
exactMatch = optional(bool, false)
bidirectionalLabelMatch = optional(bool, false)
priority = optional(number, 999)
dynamic_labels_enabled = optional(bool, false)
awsDynamicLabelsPolicy = optional(object({
blocked_keys = optional(list(string), [])
restricted_keys = optional(map(object({
allowed = optional(list(string), [])
denied = optional(list(string), [])
max = optional(string, null)
})), {})
}), null)
}), null)
queue = optional(object({
delay_webhook_event = optional(number, null)
job_queue_retention_in_seconds = optional(number, null)
visibility_timeout_seconds = optional(number, null)
redrive_build_queue = optional(object({
enabled = optional(bool, null)
maxReceiveCount = optional(number, null)
}), null)
tags = optional(map(string), {})
}), {})
lambda = optional(object({
scale = optional(object({
up = optional(object({
memory_size = optional(number, null)
timeout = optional(number, null)
reserved_concurrent_executions = optional(number, null)
job_queued_check_enabled = optional(bool, null)
event_source_mapping = optional(object({
batch_size = optional(number, null)
maximum_batching_window_in_seconds = optional(number, null)
}), {})
tags = optional(map(string), {})
}), {})
down = optional(object({
memory_size = optional(number, null)
timeout = optional(number, null)
schedule_expression = optional(string, null)
minimum_running_time_in_minutes = optional(number, null)
idle_confirmation_seconds = optional(number, null)
idle_config = optional(list(object({
cron = string
timeZone = string
idleCount = number
evictionStrategy = optional(string, "oldest_first")
})), null)
tags = optional(map(string), {})
}), {})
}), {})
pool = optional(object({
memory_size = optional(number, null)
timeout = optional(number, null)
reserved_concurrent_executions = optional(number, null)
config = optional(list(object({
schedule_expression = string
schedule_expression_timezone = optional(string)
size = number
})), null)
include_busy_runners = optional(bool, null)
runner_owner = optional(string, null)
tags = optional(map(string), {})
}), {})
}), {})
job_retry = optional(object({
enabled = optional(bool, false)
delay_in_seconds = optional(number, 300)
delay_backoff = optional(number, 2)
max_attempts = optional(number, 1)
tags = optional(map(string), {})
lambda = optional(object({
memory_size = optional(number, 256)
reserved_concurrent_executions = optional(number, 1)
timeout = optional(number, 30)
}), {})
}), {})
}), null)
}), {})

ssm = optional(object({
token_ttl_seconds = optional(number, null)
paths = optional(object({
root = optional(string, null)
tokens = optional(string, null)
config = optional(string, null)
}), {})
tags = optional(map(string), {})
parameters = optional(object({
tags = optional(map(string), {})
}), {})
housekeeper = optional(object({
schedule_expression = optional(string, null)
state = optional(string, null)
tags = optional(map(string), {})
lambda = optional(object({
artifact = optional(object({
zip = optional(string, null)
s3 = optional(object({
key = string
object_version = optional(string, null)
}), null)
}), {})
memory_size = optional(number, null)
timeout = optional(number, null)
}), {})
config = optional(object({
tokenPath = optional(string, null)
minimumDaysOld = optional(number, null)
dryRun = optional(bool, null)
}), {})
}), {})
}), {})

observability = optional(object({
logs = optional(object({
level = optional(string, null)
retention_in_days = optional(number, null)
kms_key_id = optional(string, null)
class = optional(string, null)
tags = optional(map(string), {})
}), {})
tracing = optional(object({
mode = optional(string, null)
capture_http_requests = optional(bool, null)
capture_error = optional(bool, null)
}), {})
metrics = optional(object({
enabled = optional(bool, null)
namespace = optional(string, null)
metric = optional(object({
github_app_rate_limit = optional(object({
enabled = optional(bool, null)
}), {})
job_retry = optional(object({
enabled = optional(bool, null)
}), {})
spot_termination_warning = optional(object({
enabled = optional(bool, null)
}), {})
}), {})
}), {})
}), {})

compute_provider = optional(object({
aws = optional(object({
ec2 = optional(object({
metadata_options = optional(object({
instance_metadata_tags = optional(string, "enabled")
http_endpoint = optional(string, "enabled")
http_tokens = optional(string, "required")
http_put_response_hop_limit = optional(number, 1)
}), {})
ami = optional(object({
filter = optional(map(list(string)), { state = ["available"] })
owners = optional(list(string), ["amazon"])
id_ssm_parameter = optional(object({
arn = string
}), null)
kms_key = optional(object({
arn = string
}), null)
}), null)
block_device_mappings = optional(list(object({
delete_on_termination = optional(bool, true)
device_name = optional(string, "/dev/xvda")
encrypted = optional(bool, true)
iops = optional(number)
kms_key_id = optional(string)
snapshot_id = optional(string)
throughput = optional(number)
volume_initialization_rate = optional(number)
volume_size = number
volume_type = optional(string, "gp3")
})), [{ volume_size = 30 }])
create_service_linked_role_spot = optional(bool, false)
credit_specification = optional(string, null)
ebs_optimized = optional(bool, false)
cloudwatch_agent = optional(object({
enabled = optional(bool, true)
config = optional(string, null)
}), {})
binaries_syncer = optional(object({
enabled = optional(bool, null)
}), {})
detailed_monitoring_enabled = optional(bool, false)
ssm_enabled = optional(bool, false)
user_data = optional(object({
enabled = optional(bool, true)
template = optional(string, null)
content = optional(string, null)
pre_install = optional(string, "")
post_install = optional(string, "")
debug_logging_enabled = optional(bool, false)
}), {})
instance_allocation_strategy = optional(string, "lowest-price")
instance_max_spot_price = optional(string, null)
instance_target_capacity_type = optional(string, "spot")
instance_type_priorities = optional(map(number), null)
instance_types = optional(list(string), [])
additional_security_group_ids = optional(list(string), null)
managed_security_group_enabled = optional(bool, null)
egress_rules = optional(list(object({
cidr_blocks = list(string)
ipv6_cidr_blocks = list(string)
prefix_list_ids = list(string)
from_port = number
protocol = string
security_groups = list(string)
self = bool
to_port = number
description = string
})), null)
instance_profile_path = optional(string, null)
key_name = optional(string, null)
associate_public_ipv4_address = optional(bool, null)
instance_profile = optional(object({
name = string
}), null)
on_demand_failover_for_errors = optional(list(string), [])
scale_errors = optional(list(string), [
"UnfulfillableCapacity",
"MaxSpotInstanceCountExceeded",
"TargetCapacityLimitExceededException",
"RequestLimitExceeded",
"ResourceLimitExceeded",
"MaxSpotInstanceCountExceeded",
"MaxSpotFleetRequestCountExceeded",
"InsufficientInstanceCapacity",
"InsufficientCapacityOnHost",
])
subnet_ids = optional(list(string), null)
vpc_id = optional(string, null)
cpu_options = optional(object({
core_count = optional(number)
threads_per_core = optional(number)
amd_sev_snp = optional(string)
nested_virtualization = optional(string)
}), null)
placement = optional(object({
affinity = optional(string)
availability_zone = optional(string)
group_id = optional(string)
group_name = optional(string)
host_id = optional(string)
host_resource_group_arn = optional(string)
spread_domain = optional(string)
tenancy = optional(string)
partition_number = optional(number)
}), null)
license_specifications = optional(list(object({
license_configuration_arn = string
})), [])
use_dedicated_host = optional(bool, false)
log_files = optional(list(object({
log_group_name = string
prefix_log_group = bool
file_path = string
log_stream_name = string
log_class = optional(string, "STANDARD")
})), null)
tags = optional(map(string), {})
}), null)
}), {})
}), {})
}))
| n/a | yes | | [parameter\_store\_tags](#input\_parameter\_store\_tags) | Map of tags that will be added to all the SSM Parameter Store parameters created by the Lambda function. | `map(string)` | `{}` | no | | [pool\_lambda\_reserved\_concurrent\_executions](#input\_pool\_lambda\_reserved\_concurrent\_executions) | Amount of reserved concurrent executions for the scale-up lambda function. A value of 0 disables lambda from being triggered and -1 removes any concurrency limitations. | `number` | `1` | no | | [pool\_lambda\_timeout](#input\_pool\_lambda\_timeout) | Time out for the pool lambda in seconds. | `number` | `60` | no | diff --git a/modules/multi-runner/config.experimental.translation.tf b/modules/multi-runner/config.experimental.translation.tf index 301d37ec4d..ead2fb1cff 100644 --- a/modules/multi-runner/config.experimental.translation.tf +++ b/modules/multi-runner/config.experimental.translation.tf @@ -430,6 +430,7 @@ locals { } ssm = { + token_ttl_seconds = v.runner_config.ssm_token_ttl_seconds paths = { root = null tokens = null diff --git a/modules/multi-runner/runners.tf b/modules/multi-runner/runners.tf index 566329e792..89b08715d5 100644 --- a/modules/multi-runner/runners.tf +++ b/modules/multi-runner/runners.tf @@ -17,6 +17,7 @@ module "runners" { tokens = each.value.ssm.paths.tokens config = each.value.ssm.paths.config } + ssm_token_ttl_seconds = each.value.ssm.token_ttl_seconds runner_os = each.value.runner.os instance_types = each.value.compute_provider.aws.ec2.instance_types diff --git a/modules/multi-runner/tests/config-translation.tftest.hcl b/modules/multi-runner/tests/config-translation.tftest.hcl index 132814b156..dfaf11449d 100644 --- a/modules/multi-runner/tests/config-translation.tftest.hcl +++ b/modules/multi-runner/tests/config-translation.tftest.hcl @@ -336,6 +336,7 @@ run "empty_v2_map_translates_stable_inputs" { instance_types = ["m5.large"] runners_maximum_count = 2 runner_group_name = "stable-group" + ssm_token_ttl_seconds = 3600 runner_iam_role_managed_policy_arns = [ "arn:aws:iam::123456789012:policy/stable-runner", ] @@ -417,6 +418,7 @@ run "empty_v2_map_translates_stable_inputs" { assert { condition = ( local.normalized_config.multi_runner_config["stable"].runner.os == "linux" + && local.effective_config.multi_runner_config["stable"].ssm.token_ttl_seconds == 3600 && local.normalized_config.multi_runner_config["stable"].runner.architecture == "x64" && local.normalized_config.multi_runner_config["stable"].runner.group_name == "stable-group" && local.normalized_config.multi_runner_config["stable"].runner.iam.managed_policy_arns["legacy-0"] == "arn:aws:iam::123456789012:policy/stable-runner" diff --git a/modules/multi-runner/variables.tf b/modules/multi-runner/variables.tf index 23ecfcc024..9968a35a83 100644 --- a/modules/multi-runner/variables.tf +++ b/modules/multi-runner/variables.tf @@ -232,6 +232,7 @@ variable "multi_runner_config" { schedule_expression_timezone = optional(string) size = number })), []) + ssm_token_ttl_seconds = optional(number, null) job_retry = optional(object({ enable = optional(bool, false) delay_in_seconds = optional(number, 300) @@ -403,6 +404,7 @@ variable "multi_runner_config" { }), {}) ssm = optional(object({ + token_ttl_seconds = optional(number, null) paths = optional(object({ root = optional(string, null) tokens = optional(string, null) @@ -651,6 +653,7 @@ variable "multi_runner_config" { block_device_mappings: "The EC2 instance block device configuration. Takes the following keys: `device_name`, `delete_on_termination`, `volume_type`, `volume_size`, `encrypted`, `iops`, `throughput`, `kms_key_id`, `snapshot_id`, `volume_initialization_rate`." job_retry: "Experimental! Can be removed / changed without trigger a major release. Configure job retries. The configuration enables job retries (for ephemeral runners). After creating the instances a message will be published to a job retry queue. The job retry check lambda is checking after a delay if the job is queued. If not the message will be published again on the scale-up (build queue). Using this feature can impact the rate limit of the GitHub app." pool_config: "The configuration for updating the pool. The `pool_size` to adjust to by the events triggered by the `schedule_expression`. For example you can configure a cron expression for week days to adjust the pool to 10 and another expression for the weekend to adjust the pool to 1. Use `schedule_expression_timezone` to override the schedule time zone (defaults to UTC)." + ssm_token_ttl_seconds: "Optional TTL in seconds for the SSM parameters holding the runner registration token / JIT config. When set, the parameters are created with an SSM expiration policy so SSM deletes them itself after the TTL passes. Requires the Advanced parameter tier for every token parameter, which incurs additional costs. Expiration is enforced asynchronously by SSM; the SSM housekeeper lambda remains as a backstop. Must be a positive number, and should comfortably exceed the runner boot time so the config does not expire before the instance reads it." iam_overrides: "Allows to (optionally) override the instance profile and runner role created by the module. Set `override_instance_profile` to true and provide the `instance_profile_name` to use an existing instance profile. Set `override_runner_role` to true and provide the `runner_role_arn` to use an existing role for the runner instances." } # V2 contract diff --git a/modules/runners/README.md b/modules/runners/README.md index 05c6ea5620..f941a9ac7a 100644 --- a/modules/runners/README.md +++ b/modules/runners/README.md @@ -226,12 +226,14 @@ yarn run dist | [runners\_lambda\_s3\_object\_version](#input\_runners\_lambda\_s3\_object\_version) | S3 object version for runners lambda function. Useful if S3 versioning is enabled on source bucket. | `string` | `null` | no | | [runners\_maximum\_count](#input\_runners\_maximum\_count) | The maximum number of runners that will be created. Setting the variable to `-1` desiables the maximum check. | `number` | `3` | no | | [s3\_runner\_binaries](#input\_s3\_runner\_binaries) | Bucket details for cached GitHub binary. |
object({
arn = string
id = string
key = string
})
| n/a | yes | +| [scale\_down\_idle\_confirmation\_seconds](#input\_scale\_down\_idle\_confirmation\_seconds) | Number of seconds a runner must consistently report not-busy before scale-down terminates it. GitHub's busy flag can be stale (it can read false for a runner that is actively executing a job), so a single not-busy reading is not sufficient evidence a runner is idle. Set to at least one scale-down schedule interval to require two consecutive not-busy evaluations; a busy reading resets the window. 0 keeps the previous single-reading behaviour. | `number` | `0` | no | | [scale\_down\_schedule\_expression](#input\_scale\_down\_schedule\_expression) | Scheduler expression to check every x for scale down. | `string` | `"cron(*/5 * * * ? *)"` | no | | [scale\_errors](#input\_scale\_errors) | List of AWS error codes that should trigger retry during scale up. This list replaces the module default scale-up retry errors | `list(string)` |
[
"UnfulfillableCapacity",
"MaxSpotInstanceCountExceeded",
"TargetCapacityLimitExceededException",
"RequestLimitExceeded",
"ResourceLimitExceeded",
"MaxSpotInstanceCountExceeded",
"MaxSpotFleetRequestCountExceeded",
"InsufficientInstanceCapacity",
"InsufficientCapacityOnHost"
]
| no | | [scale\_up\_reserved\_concurrent\_executions](#input\_scale\_up\_reserved\_concurrent\_executions) | Amount of reserved concurrent executions for the scale-up lambda function. A value of 0 disables lambda from being triggered and -1 removes any concurrency limitations. | `number` | `1` | no | | [sqs\_build\_queue](#input\_sqs\_build\_queue) | SQS queue to consume accepted build events. |
object({
arn = string
url = string
})
| n/a | yes | | [ssm\_housekeeper](#input\_ssm\_housekeeper) | Configuration for the SSM housekeeper lambda. This lambda deletes token / JIT config from SSM.

`schedule_expression`: is used to configure the schedule for the lambda.
`state`: state of the cloudwatch event rule. Valid values are `DISABLED`, `ENABLED`, and `ENABLED_WITH_ALL_CLOUDTRAIL_MANAGEMENT_EVENTS`.
`lambda_memory_size`: lambda memory size limit.
`lambda_timeout`: timeout for the lambda in seconds.
`config`: configuration for the lambda function. Token path will be read by default from the module. |
object({
schedule_expression = optional(string, "rate(1 day)")
state = optional(string, "ENABLED")
lambda_memory_size = optional(number, 512)
lambda_timeout = optional(number, 60)
config = object({
tokenPath = optional(string)
minimumDaysOld = optional(number, 1)
dryRun = optional(bool, false)
})
})
|
{
"config": {}
}
| no | | [ssm\_paths](#input\_ssm\_paths) | The root path used in SSM to store configuration and secrets. |
object({
root = string
tokens = string
config = string
})
| n/a | yes | +| [ssm\_token\_ttl\_seconds](#input\_ssm\_token\_ttl\_seconds) | Optional TTL in seconds for the SSM parameters holding the runner registration token / JIT config. When set, the parameters are created with an SSM expiration policy so SSM deletes them itself after the TTL passes. Requires the Advanced parameter tier for every token parameter, which incurs additional costs. Expiration is enforced asynchronously by SSM; the SSM housekeeper lambda remains as a backstop. Must be a positive number, and should comfortably exceed the runner boot time so the config does not expire before the instance reads it. | `number` | `null` | no | | [subnet\_ids](#input\_subnet\_ids) | List of subnets in which the action runners will be launched, the subnets needs to be subnets in the `vpc_id`. | `list(string)` | n/a | yes | | [tags](#input\_tags) | Map of tags that will be added to created resources. By default resources will be tagged with name. | `map(string)` | `{}` | no | | [tracing\_config](#input\_tracing\_config) | Configuration for lambda tracing. |
object({
mode = optional(string, null)
capture_http_requests = optional(bool, false)
capture_error = optional(bool, false)
})
| `{}` | no | diff --git a/modules/runners/pool.tf b/modules/runners/pool.tf index 11840a4638..10112adb6d 100644 --- a/modules/runners/pool.tf +++ b/modules/runners/pool.tf @@ -59,6 +59,7 @@ module "pool" { } subnet_ids = var.subnet_ids ssm_token_path = "${var.ssm_paths.root}/${var.ssm_paths.tokens}" + ssm_token_ttl_seconds = var.ssm_token_ttl_seconds ssm_config_path = "${var.ssm_paths.root}/${var.ssm_paths.config}" ami_id_ssm_parameter_name = local.ami_id_ssm_parameter_name ami_id_ssm_parameter_read_policy_arn = local.ami_id_ssm_parameter_name != null ? aws_iam_policy.ami_id_ssm_parameter_read[0].arn : null diff --git a/modules/runners/pool/README.md b/modules/runners/pool/README.md index 54b85d968e..755abbdc8e 100644 --- a/modules/runners/pool/README.md +++ b/modules/runners/pool/README.md @@ -49,7 +49,7 @@ No modules. | Name | Description | Type | Default | Required | |------|-------------|------|---------|:--------:| | [aws\_partition](#input\_aws\_partition) | (optional) partition for the arn if not 'aws' | `string` | `"aws"` | no | -| [config](#input\_config) | Lookup details in parent module. |
object({
lambda = object({
log_level = string
logging_retention_in_days = number
logging_kms_key_id = string
log_class = string
reserved_concurrent_executions = number
s3_bucket = string
s3_key = string
s3_object_version = string
security_group_ids = list(string)
runtime = string
architecture = string
memory_size = number
timeout = number
zip = string
subnet_ids = list(string)
parameter_store_tags = string
})
tags = map(string)
ghes = object({
url = string
ssl_verify = string
})
github_app_parameters = object({
key_base64 = map(string)
id = map(string)
additional_apps_manifest = optional(object({
name = string
arn = string
}), null)
additional_app_parameter_arns = optional(list(string), [])
})
subnet_ids = list(string)
runner = object({
disable_runner_autoupdate = bool
ephemeral = bool
enable_jit_config = bool
enable_on_demand_failover_for_errors = list(string)
scale_errors = list(string)
boot_time_in_minutes = number
labels = list(string)
launch_template = object({
name = string
})
group_name = string
name_prefix = string
pool_owner = string
role = object({
arn = string
})
use_dedicated_host = bool
})
runners_maximum_count = number
instance_types = list(string)
instance_type_priorities = optional(map(number))
instance_target_capacity_type = string
instance_allocation_strategy = string
instance_max_spot_price = string
prefix = string
pool = list(object({
schedule_expression = string
schedule_expression_timezone = string
size = number
}))
include_busy_runners = bool
role_permissions_boundary = string
kms_key_arn = string
ami_kms_key_arn = string
ami_id_ssm_parameter_arn = string
role_path = string
ssm_token_path = string
ssm_config_path = string
ami_id_ssm_parameter_name = string
ami_id_ssm_parameter_read_policy_arn = string
arn_ssm_parameters_path_config = string
lambda_tags = map(string)
user_agent = string
})
| n/a | yes | +| [config](#input\_config) | Lookup details in parent module. |
object({
lambda = object({
log_level = string
logging_retention_in_days = number
logging_kms_key_id = string
log_class = string
reserved_concurrent_executions = number
s3_bucket = string
s3_key = string
s3_object_version = string
security_group_ids = list(string)
runtime = string
architecture = string
memory_size = number
timeout = number
zip = string
subnet_ids = list(string)
parameter_store_tags = string
})
tags = map(string)
ghes = object({
url = string
ssl_verify = string
})
github_app_parameters = object({
key_base64 = map(string)
id = map(string)
additional_apps_manifest = optional(object({
name = string
arn = string
}), null)
additional_app_parameter_arns = optional(list(string), [])
})
subnet_ids = list(string)
runner = object({
disable_runner_autoupdate = bool
ephemeral = bool
enable_jit_config = bool
enable_on_demand_failover_for_errors = list(string)
scale_errors = list(string)
boot_time_in_minutes = number
labels = list(string)
launch_template = object({
name = string
})
group_name = string
name_prefix = string
pool_owner = string
role = object({
arn = string
})
use_dedicated_host = bool
})
runners_maximum_count = number
instance_types = list(string)
instance_type_priorities = optional(map(number))
instance_target_capacity_type = string
instance_allocation_strategy = string
instance_max_spot_price = string
prefix = string
pool = list(object({
schedule_expression = string
schedule_expression_timezone = string
size = number
}))
include_busy_runners = bool
role_permissions_boundary = string
kms_key_arn = string
ami_kms_key_arn = string
ami_id_ssm_parameter_arn = string
role_path = string
ssm_token_path = string
ssm_token_ttl_seconds = optional(number, null)
ssm_config_path = string
ami_id_ssm_parameter_name = string
ami_id_ssm_parameter_read_policy_arn = string
arn_ssm_parameters_path_config = string
lambda_tags = map(string)
user_agent = string
})
| n/a | yes | | [tracing\_config](#input\_tracing\_config) | Configuration for lambda tracing. |
object({
mode = optional(string, null)
capture_http_requests = optional(bool, false)
capture_error = optional(bool, false)
})
| `{}` | no | ## Outputs diff --git a/modules/runners/pool/main.tf b/modules/runners/pool/main.tf index f9e140317d..beac09887c 100644 --- a/modules/runners/pool/main.tf +++ b/modules/runners/pool/main.tf @@ -53,6 +53,7 @@ resource "aws_lambda_function" "pool" { RUNNER_OWNER = var.config.runner.pool_owner RUNNERS_MAXIMUM_COUNT = var.config.runners_maximum_count SSM_TOKEN_PATH = var.config.ssm_token_path + SSM_TOKEN_TTL_SECONDS = var.config.ssm_token_ttl_seconds != null ? var.config.ssm_token_ttl_seconds : "" SSM_CONFIG_PATH = var.config.ssm_config_path SUBNET_IDS = join(",", var.config.subnet_ids) POWERTOOLS_SERVICE_NAME = "${var.config.prefix}-pool" diff --git a/modules/runners/pool/variables.tf b/modules/runners/pool/variables.tf index 4c3551c4c1..b0e0d94609 100644 --- a/modules/runners/pool/variables.tf +++ b/modules/runners/pool/variables.tf @@ -72,6 +72,7 @@ variable "config" { ami_id_ssm_parameter_arn = string role_path = string ssm_token_path = string + ssm_token_ttl_seconds = optional(number, null) ssm_config_path = string ami_id_ssm_parameter_name = string ami_id_ssm_parameter_read_policy_arn = string diff --git a/modules/runners/scale-up.tf b/modules/runners/scale-up.tf index d78eb7bfa5..83ba8ee40c 100644 --- a/modules/runners/scale-up.tf +++ b/modules/runners/scale-up.tf @@ -64,6 +64,7 @@ resource "aws_lambda_function" "scale_up" { RUNNERS_MAXIMUM_COUNT = var.runners_maximum_count POWERTOOLS_SERVICE_NAME = "${var.prefix}-scale-up" SSM_TOKEN_PATH = local.token_path + SSM_TOKEN_TTL_SECONDS = var.ssm_token_ttl_seconds != null ? var.ssm_token_ttl_seconds : "" SSM_CONFIG_PATH = "${var.ssm_paths.root}/${var.ssm_paths.config}" SSM_PARAMETER_STORE_TAGS = local.parameter_store_tags SUBNET_IDS = join(",", var.subnet_ids) diff --git a/modules/runners/variables.tf b/modules/runners/variables.tf index 1d2f9b35a9..49f37ed040 100644 --- a/modules/runners/variables.tf +++ b/modules/runners/variables.tf @@ -682,6 +682,17 @@ variable "ssm_paths" { }) } +variable "ssm_token_ttl_seconds" { + description = "Optional TTL in seconds for the SSM parameters holding the runner registration token / JIT config. When set, the parameters are created with an SSM expiration policy so SSM deletes them itself after the TTL passes. Requires the Advanced parameter tier for every token parameter, which incurs additional costs. Expiration is enforced asynchronously by SSM; the SSM housekeeper lambda remains as a backstop. Must be a positive number, and should comfortably exceed the runner boot time so the config does not expire before the instance reads it." + type = number + default = null + + validation { + condition = var.ssm_token_ttl_seconds == null ? true : var.ssm_token_ttl_seconds > 0 + error_message = "`ssm_token_ttl_seconds` must be a positive number." + } +} + variable "runner_name_prefix" { description = "The prefix used for the GitHub runner name. The prefix will be used in the default start script to prefix the instance name when register the runner in GitHub. The value is available via an EC2 tag 'ghr:runner_name_prefix'." type = string diff --git a/variables.tf b/variables.tf index f384921c09..53b8b12aee 100644 --- a/variables.tf +++ b/variables.tf @@ -962,6 +962,17 @@ variable "ssm_paths" { default = {} } +variable "ssm_token_ttl_seconds" { + description = "Optional TTL in seconds for the SSM parameters holding the runner registration token / JIT config. When set, the parameters are created with an SSM expiration policy so SSM deletes them itself after the TTL passes. Requires the Advanced parameter tier for every token parameter, which incurs additional costs. Expiration is enforced asynchronously by SSM; the SSM housekeeper lambda remains as a backstop. Must be a positive number, and should comfortably exceed the runner boot time so the config does not expire before the instance reads it." + type = number + default = null + + validation { + condition = var.ssm_token_ttl_seconds == null ? true : var.ssm_token_ttl_seconds > 0 + error_message = "`ssm_token_ttl_seconds` must be a positive number." + } +} + variable "runner_name_prefix" { description = "The prefix used for the GitHub runner name. The prefix will be used in the default start script to prefix the instance name when register the runner in GitHub. The value is available via an EC2 tag 'ghr:runner_name_prefix'." type = string