personal_infra/ansible/roles/forgejo_runner
counterweight bf3d21fef7
uptime kuma: remove every live reference, repoint the probes to Gatus
Nothing in the repo pushes to, authenticates against, or is gated by Uptime
Kuma any more.

── The sixth instance of the banner bug ────────────────────────────────────
memos had `Restart memos` guarded by `uptime_kuma_enabled`, because the
deprecation banner was placed immediately above it and swept it in. It is a
HANDLER, so every memos config change since 2026-09-11 applied to disk and
silently never restarted the service. Ungated.

That is the same failure found in forgejo-runner's self-assert, phoenixd's timer
enable, mempool's three timer enables, fulcrum's restart handler and bitcoind's
restart handler. Every guard was read and asked "monitoring or deployment?"
before being deleted, which is the only reason this was caught.

── What was removed ────────────────────────────────────────────────────────
  30 uptime_kuma_enabled guards across 7 unconverted service playbooks, and
     the 29 Kuma monitor-creation tasks they gated (embedded Python that drove
     the Kuma API, temp credential files, cleanup)
  7  dead uptime_kuma_api_url definitions
  7  stale DEPRECATED banners
     uptime_kuma_enabled and subdomains.uptime_kuma from group_vars/all
     healthcheck_push_urls from the vault - 30 push tokens
     services/ntfy/setup_ntfy_uptime_kuma_notification.yml -> archive/

The explanatory comments in the six converted roles are KEPT on purpose. They
record why a handler is ungated, and deleting the explanation invites someone
to helpfully re-add the guard.

── The probes moved rather than died ───────────────────────────────────────
Eight per-service health checks were still pushing to Kuma. They are not
superseded by infra/401: that answers "is the unit running", these answer "does
the service actually respond" - an RPC call to bitcoind, a TCP connect to
Fulcrum's Electrum port, an HTTP fetch from Mempool's backend. A process can be
perfectly `active` and useless.

So they were repointed, not deleted. Gatus external endpoints take a POST with
a bearer token and success=true|false where Kuma took a GET with ?status=up, so
report() now maps up/down to true/false internally and no call site changed.
Registered by infra/403 as the `probe` group, one token per host.

Two bugs fixed while in there:
  * forgejo-runner's check only ever reported SUCCESS - it exited before pushing
    when the runner was down, so a failure was invisible until the heartbeat
    window expired. Reporting the failure is the entire point of a check.
  * All six healthcheck .service units were mode 0644 and now carry a bearer
    token. They are 0600.

Verified: 91 endpoints, 91 UP, 0 DOWN. Every probe triggered by hand and
confirmed arriving. Zero Kuma URLs left in the vault, zero live references in
any playbook or role.

Still standing, deliberately: the Kuma container on watchtower, its Caddy vhost,
and the uptime.contrapeso.xyz DNS record. Turning the service off is a separate
decision from removing the code that talked to it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-14 10:30:28 +02:00
..
defaults uptime kuma: remove every live reference, repoint the probes to Gatus 2026-09-14 10:30:28 +02:00
tasks uptime kuma: remove every live reference, repoint the probes to Gatus 2026-09-14 10:30:28 +02:00
templates uptime kuma: remove every live reference, repoint the probes to Gatus 2026-09-14 10:30:28 +02:00
README.md forgejo-runner: convert to a role, de-Uptime-Kuma the health check 2026-09-12 18:15:29 +02:00

forgejo_runner

Installs and runs a Forgejo Actions runner, registers it with the Forgejo instance, and keeps a health check on a systemd timer.

Converted from deploy_forgejo_runner_playbook.yml (409 lines) under Plan 6. The playbook is now 16 lines.

Phases

tasks/main.yml imports five files in order:

prerequisites.yml Docker must be present
install.yml binary, system user, working directory
configure.yml config file, registration with the instance
service.yml systemd unit, start, assert it came up
healthcheck.yml check script, unit, timer

import_tasks, not include_tasks — static imports are visible to --list-tasks, which is how the conversion was verified against the playbook it replaced.

Monitoring: one variable, no product knowledge

This role contains nothing specific to any monitoring system. What used to be here — an ~80-line embedded Python script creating monitors over the Uptime Kuma API, a /tmp credentials file, token extraction, a systemd Environment= rewrite, and 8 when: uptime_kuma_enabled guards — is gone.

What remains answers the actual question, is this service healthy, and records it two ways:

  • the exit code, which systemd keeps: systemctl is-failed forgejo-runner-healthcheck.service is a complete answer with no monitoring system involved at all;
  • a log file at {{ healthcheck_log_file }}.

To report health somewhere, set one variable:

healthcheck_push_url: "https://example/api/push/TOKEN"

Any endpoint accepting an HTTP ping works. Empty (the default) means check, log, exit honestly, report nowhere — which is also the right setting for a pull-based monitor like Prometheus' textfile collector, since that reads unit state instead.

The push URL is a credential (anyone holding it can forge an "up"), so callers pass it from the vault rather than committing it.

One behaviour change, deliberate

Assert runner is running used to be guarded by uptime_kuma_enabled, so it never ran. It is not a monitoring task — it is the deployment checking its own work — and the deprecation banner swept it up by mistake. It is ungated here, which means a runner that fails to start now fails the play instead of deploying "successfully" in silence.