Automating rootless Docker host updates with Ansible
8 days ago
- #automation
- #docker
- #ansible
- Automating rootless Docker host updates with Ansible to prevent version mismatches after system upgrades.
- Ansible playbook detects critical package changes and restarts necessary rootless Docker daemons automatically.
- Critical packages include docker-ce, containerd.io, and others that require Docker daemon restarts post-upgrade.
- Playbook runs silently unless action is needed, reporting only on restarted services or kept-back packages.
- Utilizes systemd-linger to identify users with rootless Docker services enabled.
- Includes steps for full system updates, checking for reboot requirements, and handling kept-back packages.
- Designed for daily execution via cron, with minimal output unless intervention is required.
- SSH Agent Forwarding used for secure authentication without storing private keys on the management host.
- Management host setup includes inventory configuration and a wrapper script for easy execution.
- Workflow diagram illustrates the process from local machine to management host to target VMs.