a1a57b04bb
Serwisy o jednorodnej tresci (bez wydzielonej sekcji deploy/runbook): kb-postgres, stability-agent, llm-gateway, vikunja, zigbee2mqtt, npm, forgejo, ollama, ir-ac-ha-integration, chelsty-stability-agent. Deprecated: mosquitto (NOT DEPLOYED/LEGACY), home-assistant-ken-legacy (archiwum importu), joplin (stub z 2026-04-15, brak katalogu services/joplin/). git mv + frontmatter, tresc nietknieta. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
79 lines
2.5 KiB
Markdown
79 lines
2.5 KiB
Markdown
---
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okf: "0.1"
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type: service
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visibility: private
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status: active
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updated: 2026-05-17
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links: []
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---
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### Stability Agent
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A lightweight filesystem-first watchdog and observer agent for homelab nodes.
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#### Features
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* **Continuous Monitoring**: Runs as a background service.
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* **Docker Inspection**: Checks container status via read-only Docker socket (optional).
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* **Disk Usage**: Monitors local disk utilization.
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* **Tailscale Check**: Verifies Tailscale availability (optional).
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* **MQTT Reachability**: Checks connectivity to a configured MQTT broker (optional).
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* **Redis Publishing**: Publishes runtime state and events to a central Redis server (PIHA).
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* **Event Logging**: Writes append-only JSON events to `/opt/homelab/events/YYYY-MM-DD/<NODE_NAME>/`.
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* **State Reporting**: Writes heartbeat and status summary to `/opt/homelab/state/`.
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#### Deployment
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Use the deployment helper script:
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```bash
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./scripts/deploy/deploy-stability-agent.sh <NODE_NAME>
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```
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#### Configuration
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Environment variables:
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* `STABILITY_CHECK_INTERVAL`: Interval between checks in seconds (default: 60).
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* `DISK_THRESHOLD_PCT`: Disk usage percentage to trigger warning (default: 90).
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* `MQTT_HOST`: Hostname or IP of the MQTT broker to check.
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* `MQTT_PORT`: Port of the MQTT broker (default: 1883).
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* `REDIS_HOST`: Hostname or IP of the Redis server (e.g., PIHA at 100.108.208.3).
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* `REDIS_PORT`: Port of the Redis server (default: 6379).
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* `REDIS_ENABLED`: Whether to enable Redis publishing (default: true if REDIS_HOST is set).
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* `NODE_NAME`: Name of the current node (default: chelsty).
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#### Verification
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You can verify the Redis publishing using `redis-cli`:
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```bash
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# Check node state
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redis-cli -h 100.108.208.3 HGETALL homelab:nodes:<NODE_NAME>
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# Check service discovery
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redis-cli -h 100.108.208.3 HGETALL homelab:services:<NODE_NAME>:stability-agent
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# Check event stream
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redis-cli -h 100.108.208.3 XRANGE homelab:events - +
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```
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#### Safety
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* No automatic restarts are performed.
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* Read-only access to Docker socket.
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* No configuration mutation.
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* No secrets stored in the repository.
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#### Event Schema
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Events are written as JSON lines with the following fields:
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* `id`: Unique event UUID.
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* `timestamp`: ISO 8601 timestamp (UTC).
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* `node`: `<NODE_NAME>`.
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* `source`: `stability-agent`.
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* `type`: Type of event (e.g., `disk_usage_high`, `containers_not_running`).
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* `severity`: `info`, `warning`, or `error`.
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* `message`: Human-readable description.
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* `details`: Object containing specific check results.
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