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forust 7ce727bc8a chore(renovate): move config under renovate/ and validate it in CI

The config lived in renovate.json at the repo root while everything else
Renovate-related sat under renovate/, and renovate/config.js was a second,
unused source of truth. Both are gone: renovate/renovate.json is now the
only config file.

Because the CronJob in the cluster cannot read the repository, its
ConfigMap carries an inlined copy of the config. That copy is generated,
and sync-renovate-configmap.sh --check now fails the build when it drifts
from the source file.

The workflows also stop carrying a copy of the renovate/renovate image
tag. They read it from renovate/k8s/cronjob.yaml, so the version validated
in CI is the version that actually runs in the cluster.

ci.yaml validates the config with renovate-config-validator, checks the
generated ConfigMap, and kubeconforms the CronJob's own manifests.

2026-09-26 20:09:13 +02:00

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Renovate for Gitea

Renovate runs as a Kubernetes CronJob and creates container image update pull requests in Gitea. It does not deploy changes itself.

Kubernetes

Create a dedicated Gitea user named renovate-bot, create a repository access token, and grant it repository read/write plus issue read/write permissions. Add read:packages if Renovate must inspect private Gitea registry images.

Create the ignored Secret locally; never commit the PAT:

cp renovate/k8s/secrets.yaml.example renovate/k8s/secrets.yaml
$EDITOR renovate/k8s/secrets.yaml
kubectl apply -f renovate/k8s/namespace.yaml
kubectl apply -f renovate/k8s/secrets.yaml
kubectl apply -f renovate/k8s/configmap.yaml
kubectl apply -f renovate/k8s/cronjob.yaml

The renovate/k8s/active marker makes the normal deployment workflow include the namespace, ConfigMap, and CronJob. The Secret is intentionally excluded from Git and must be applied separately after every new cluster.

Run it immediately instead of waiting for the six-hour schedule.

Two options, both use the same renovate/renovate.json:

kubectl create job --from=cronjob/renovate renovate-manual-$(date +%s) -n renovate

or the renovate-run Actions workflow (Actions tab → renovate-run → Run workflow). It runs the same image as the CronJob on the self-hosted runner via Docker — the tag is read out of renovate/k8s/cronjob.yaml at run time rather than hardcoded, so the two cannot drift apart. Required Actions secrets (repo or org settings):

RENOVATE_TOKEN — renovate-bot PAT (repository + issue read/write).
RENOVATE_GITHUB_COM_TOKEN — optional, for changelogs and GitHub rate limits.

Inputs: repositories (default forust/homelab), log_level (info/debug). Only one run at a time (concurrency group renovate-run), same as the CronJob Forbid policy.

Inspect runs with:

kubectl get cronjob,jobs,pods -n renovate
kubectl logs -n renovate job/<job-name>

RENOVATE_GITHUB_COM_TOKEN is optional but recommended for changelogs and GitHub API rate limits. Set it in the Kubernetes Secret if available.

Compose

Copy .env.example to .env, set the PAT, and run:

docker compose -f renovate-compose.yaml run --rm renovate

The Compose file is intentionally named renovate-compose.yaml, so the repository's automatic deployment discovery does not start it accidentally.

Configuration

renovate/renovate.json is the single source of truth. The Compose file and the renovate-run workflow mount that file directly.

A ConfigMap cannot read from the repository, so the CronJob needs the config inlined. renovate/k8s/configmap.yaml is therefore a generated copy:

.gitea/workflows/sync-renovate-configmap.sh          # regenerate after editing
.gitea/workflows/sync-renovate-configmap.sh --check  # fail if out of date

The renovate-ci workflow runs the --check form on every PR and push, so a config edit that forgets to regenerate the ConfigMap cannot be merged.

Beyond images, customManagers in the config track:

Helm chart versions pinned in .gitea/workflows/deploy-lib.sh. The built-in helmv3 manager only reads Chart.yaml and helm-values only reads values files, so neither sees a version written into a helm upgrade command — these are declared as custom.regex managers against the helm datasource.
CI linter versions in .gitea/workflows/tool-versions.env.

The Renovate image tag is deliberately not in tool-versions.env: renovate/k8s/cronjob.yaml owns it, and the workflows read it from there.

How updates flow

Renovate scans both compose.yaml files and Kubernetes manifests, opens a branch and PR with image tag changes, and waits for CI. After merge, the existing deployment workflow applies Kubernetes changes or redeploys Compose stacks. Renovate never updates running workloads directly.

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