portfolio/professional-infra/linux-operations-automation/roles/decommission

Decommission Role

Gracefully decommission enterprise infrastructure nodes with comprehensive backup and cleanup.

Features

• Confirmation Prompt: Interactive confirmation before decommissioning
• Graceful Shutdown: Stop services gracefully with connection drain time
• Comprehensive Backup: Archive configurations and data before cleanup
• Selective Cleanup: Only remove items that were deployed
• Logging: Detailed decommissioning logs for audit trail
• Notifications: Optional email notifications on completion

Role Variables

See defaults/main.yml for all available variables.

Key Variables

• backup_data: Backup application data (default: true)
• export_config: Export system configuration (default: true)
• graceful_shutdown: Graceful service shutdown (default: true)
• auto_shutdown: Auto shutdown after decommissioning (default: false)
• application_services: Services to stop
• application_packages: Packages to remove
• decommission_notification_email: Email for notifications (optional)

Usage

- role: decommission
  vars:
    backup_data: true
    export_config: true
    auto_shutdown: false
    decommission_notification_email: "ops@company.com"

Backup Locations

• Configuration: /var/backups/decommission-<timestamp>/config/
• Data: /var/backups/decommission-<timestamp>/data/
• Report: /var/log/decommission_report_<timestamp>.log

Supported Groups

• webservers: Backs up /var/www/html
• databases: Backs up PostgreSQL data
• monitoring: Backs up Prometheus data
• loadbalancers: Loadbalancer cleanup

Safety Features

• Interactive confirmation before execution
• Connection drain time before shutdown (30 seconds)
• Errors are logged but don't stop the process
• Comprehensive audit log

Tags

• decommission: All decommissioning tasks
• cleanup: Cleanup-related tasks