Files
computer-playbook/roles/sys-ctl-hlth-docker-volumes
Kevin Veen-Birkenbach 716ebef33b Refactor task includes and update variable handling for Ansible 2.20 migration
This commit updates multiple roles to ensure compatibility with Ansible 2.20.
Several include paths and task-loading mechanisms required adjustments,
as Ansible 2.20 applies stricter evaluation rules for complex Jinja expressions
and no longer resolves certain relative include paths the way Ansible 2.18 did.

Key changes:
- Replaced legacy once_finalize.yml and once_flag.yml with the new structure
  under tasks/utils/once/finalize.yml and tasks/utils/once/flag.yml.
- Updated all include_tasks statements to use 'path_join' with playbook_dir,
  ensuring deterministic and absolute file resolution across roles.
- Fixed all network helper includes by converting direct relative paths such as
  'roles/docker-compose/tasks/utils/network.yml' to proper Jinja-evaluated paths.
- Normalized MATOMO_* variable names for consistency with the updated variable
  scope behavior in Ansible 2.20.
- Removed deprecated patterns that were implicitly supported in Ansible 2.18
  but break under the more strict variable and path resolution model in 2.20.

These changes are part of the full migration step required to ensure the
infinito-nexus roles remain stable, deterministic, and forward-compatible with
Ansible 2.20.

Details of the discussion and reasoning can be found in this conversation:
https://chatgpt.com/share/69300a8d-24d4-800f-bec0-e895a695618a
2025-12-03 11:02:34 +01:00
..

Docker Volumes Health Check

Description

This role detects unused anonymous Docker volumes that are not bound to any running container.
It can optionally exclude specific volumes from the check using a configurable whitelist.

Overview

The role installs a script and a systemd service with a timer to periodically scan for leftover anonymous volumes.
This helps prevent wasted disk space and leftover resources from old deployments.

Purpose

The main purpose of this role is to keep Docker environments clean by identifying and reporting orphaned anonymous volumes.
It supports a whitelist mechanism to avoid alerting on known or intentional volumes.

Features

  • Anonymous Volume Detection: Identifies volumes with 64-character IDs not attached to any container.
  • Whitelist Support: Skips volumes listed in DOCKER_WHITELISTET_ANON_VOLUMES.
  • Bootstrap Volume Exclusion: Ignores known bootstrap volumes (e.g., /var/www/bootstrap).
  • Systemd Integration: Installs a one-shot service and timer to automate checks.
  • Alerting Support: Works with the sys-ctl-alm-compose role for failure notifications.

Further Resources