Frank
dab81b91a3
prometheus, grafana, loki, alloy and node-exporter ran only from dankclaw/compose.yaml. Rootless podman does not restart bare containers, so they did not survive the 2026-09-11 reboot for the amd_iommu=off change and had to be restored by hand — the same gap that had already cost the fleet Caddy and Pi-hole, which is why the boot-persistence rule exists. Each is now a rootless Quadlet unit under dankclaw/observability/quadlet/, installed and dispatched by deploy_observability in deploy-remote.sh, with the compose definitions retired so only one owner exists per container name. Images, mounts, arguments and container names are unchanged, so Caddy's proxies and Prometheus' own scrape config keep resolving. Two posture changes, both about the unauthenticated surface: * The three HTTP UIs published on 0.0.0.0 with no authentication of any kind (Prometheus even with the lifecycle endpoint enabled). They now publish on 127.0.0.1: the browser path is the guarded franksdank.cloud vhost, Caddy reaches them by name over dankclaw_default, and the host-side homepage status timer probes loopback. Nothing legitimately used the LAN port. * node-exporter bound :9100 on every interface; it now binds exactly its two consumers, loopback (homepage timer) and the LAN address (Prometheus, which runs in a container and cannot reach the host's loopback). alloy gains a reachable health endpoint: its UI listens on the container's own loopback and alloy 1.x refuses a config block for it, so the compose service had nothing to probe — the homepage status card for alloy read 'down' continuously. The unit moves the UI with a command-line flag and publishes 127.0.0.1:12345. grafana keeps its Authentik OAuth client secret without receiving the whole .env: systemd expands the value from a [Service] EnvironmentFile, which never reaches the container.
57 lines
2.2 KiB
INI
57 lines
2.2 KiB
INI
# Quadlet unit: prometheus (rootless, boot-persistent).
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#
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# Install path on dankclaw: ~/.config/containers/systemd/prometheus.container
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# Unit name: prometheus.service (container name: prometheus)
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#
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# The homelab metrics store. This replaces the compose service of the same
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# name in dankclaw/compose.yaml ("Observability" block): these five containers
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# were started by hand with podman-compose and never came back after a reboot,
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# which the 2026-09-11 reboot for the amd_iommu=off change made obvious.
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#
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# PUBLISHING. The published port is bound to 127.0.0.1 deliberately. Prometheus
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# is reached by Caddy over the dankclaw_default network (the Caddyfile's
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# post-auth handler proxies to prometheus:9090) and by the host-side homepage
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# status timer over 127.0.0.1. The compose service published on 0.0.0.0, which
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# put an UNAUTHENTICATED metrics API — with the lifecycle endpoint enabled —
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# on every host interface: a bypass around the Anubis + Authentik guard on
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# prometheus.franksdank.cloud. No off-host consumer needs it.
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#
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# CONFIG. /opt/prometheus/config/prometheus.yml is installed from
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# shared/prometheus/prometheus.yml by deploy-remote.sh on every deploy, so the
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# repo copy is the source of truth. STATE (30-day retention) lives in
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# /opt/prometheus/data.
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#
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# Rootless: container root maps to the invoking user (dank) in this user
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# namespace and dank owns /opt/prometheus/data. The image's default user
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# (nobody) maps to a subuid that cannot write it.
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#
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# There are no alerting rules and no Alertmanager anywhere in this stack: the
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# scrape config is the whole of its configuration.
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[Unit]
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Description=Prometheus metrics store (Dankclaw)
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After=network-online.target
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Wants=network-online.target
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[Container]
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ContainerName=prometheus
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Image=docker.io/prom/prometheus:latest
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Network=dankclaw_default
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User=0:0
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Exec=--config.file=/etc/prometheus/prometheus.yml --storage.tsdb.path=/prometheus --storage.tsdb.retention.time=30d --web.enable-lifecycle
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PublishPort=127.0.0.1:9090:9090
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Volume=/opt/prometheus/config:/etc/prometheus
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Volume=/opt/prometheus/data:/prometheus
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HealthCmd=wget --spider -q http://localhost:9090/-/healthy
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HealthInterval=30s
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HealthTimeout=10s
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HealthRetries=3
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HealthStartPeriod=30s
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[Service]
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Restart=always
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RestartSec=10
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[Install]
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WantedBy=default.target
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