Consolidate WAL-G backup scripts into unified manager

[gpas45]

Summary

Consolidates the separate WAL-G backup management scripts (wal-g-cfg.sh, wal-g-list.sh, wal-g-backup.sh, wal-g-backup-all.sh, wal-g-delete.sh, wal-g-restore.sh, wal-g-install.sh, and wal-g-menu.sh) into a single unified wal-g-manager.sh script with an interactive menu interface, following the pattern of existing pgpro-setup.sh and pg-server-manager.sh.

Key Changes

• New unified script: wal-g-manager.sh (1768 lines) consolidates all WAL-G operations into one entry point with multiple operational modes:

  • Interactive menu (default, root-only)
  • Configuration mode (cfg)
  • Backup listing (list)
  • Interactive backup creation (backup)
  • Non-interactive backup-all for systemd timers (backup-all)
  • Backup deletion/retention (delete)
  • Cluster restoration (restore)
  • Installation/setup (install, units, uninstall-units, uninstall)

• Removed individual scripts: All separate scripts from wal-g-scripts/ directory are removed:

  • wal-g-cfg.sh
  • wal-g-list.sh
  • wal-g-backup.sh
  • wal-g-backup-all.sh
  • wal-g-delete.sh
  • wal-g-restore.sh
  • wal-g-install.sh
  • wal-g-menu.sh

• Updated systemd service: backup-pgsql.service now references the unified manager script instead of the separate wal-g-backup-all.sh

• Unified helper functions: Common functionality (logging, prompts, PostgreSQL interaction, JSON config handling, systemd service management) is consolidated into shared utility functions within the single script

Implementation Details

• Maintains backward compatibility with existing configuration file format (.walg-<port>.json in /etc/wal-g.d/)
• Preserves all original functionality including S3 and file-based storage backends
• Implements consistent color-coded logging (INFO, WARN, ERROR, section headers)
• Supports both interactive TTY and non-interactive modes
• Respects NO_COLOR environment variable for accessibility
• Requires root privileges for most operations with appropriate permission checks
• Uses umask 077 during configuration to protect sensitive credentials

https://claude.ai/code/session_016qQMR1LRFfnB6ZkWprECWk