blumeops/ansible/roles/plex_metrics/tasks/main.yml
Erich Blume ae1513e7e9 Add Plex Media Server observability (#13)
## Summary
- Add `plex_metrics` ansible role with textfile collector for Prometheus metrics
- Add Plex log collection to Alloy (forwards to Loki)
- Add Grafana dashboard for Plex monitoring (status, library counts, sessions, transcoding, logs)

## Metrics Collected
- `plex_up` - server health
- `plex_version_info` - server version
- `plex_sessions_total/playing/paused` - active sessions
- `plex_transcode_sessions_total/video/audio` - transcoding status
- `plex_library_items{library,type}` - library item counts

## Prerequisites
Plex token must be stored at `~/.plex-token` on indri (already done).

## Test plan
- [x] Dry-run passed (`mise run provision-indri -- --check --diff`)
- [ ] Apply changes (`mise run provision-indri`)
- [ ] Verify metrics: `ssh indri 'cat /opt/homebrew/var/node_exporter/textfile/plex.prom'`
- [ ] Verify logs in Grafana Explore: `{service="plex"}`
- [ ] Check Plex dashboard in Grafana

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: https://forge.tail8d86e.ts.net/eblume/blumeops/pulls/13
2026-01-15 15:27:59 -08:00

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YAML

---
- name: Ensure bin directory exists
ansible.builtin.file:
path: "{{ plex_metrics_script | dirname }}"
state: directory
mode: '0755'
- name: Deploy plex metrics collection script
ansible.builtin.template:
src: plex-metrics.sh.j2
dest: "{{ plex_metrics_script }}"
mode: '0755'
notify: reload plex-metrics
- name: Deploy plex-metrics LaunchAgent plist
ansible.builtin.template:
src: plex-metrics.plist.j2
dest: ~/Library/LaunchAgents/mcquack.eblume.plex-metrics.plist
mode: '0644'
notify: reload plex-metrics
- name: Check if plex-metrics LaunchAgent is loaded
ansible.builtin.command: launchctl list mcquack.eblume.plex-metrics
register: launchctl_check
changed_when: false
failed_when: false
- name: Load plex-metrics LaunchAgent if not loaded
ansible.builtin.command: launchctl load ~/Library/LaunchAgents/mcquack.eblume.plex-metrics.plist
when: launchctl_check.rc != 0
failed_when: false