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Review Grafana: replace Helm upgrade plan with C2 Mikado chain (#258)

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## Summary
- Delete the old 3-phase Helm chart upgrade plan (predates Mikado system)
- Create C2 Mikado chain with goal card `upgrade-grafana` and two leaf prereqs:
  - `kustomize-grafana-deployment` — convert Helm to kustomize manifests
  - `build-grafana-container` — home-built Grafana 12.x image (no upstream containers)
- Record first-ever Grafana review: currently at v11.4.0 on Helm chart 8.8.2
- Update service-versions.yaml, how-to index, and plans index

## Service Review Findings
- Grafana is healthy and synced in ArgoCD
- Running v11.4.0, latest upstream is 12.3.3
- Breaking changes for 12.x are low-risk (React panels only, UIDs compliant)
- PVC is disposable — dashboards and datasources are all config-provisioned

## Deployment and Testing
- [ ] No deployment needed — documentation-only change
- [ ] `docs-check-links` passes
- [ ] `docs-check-index` passes

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/258
This commit is contained in:
Erich Blume 2026-02-23 15:06:00 -08:00
commit f05e5cccdf
8 changed files with 162 additions and 238 deletions
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docs/how-to/how-to.md
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@ -61,7 +61,7 @@ Migration and transition plans for upcoming infrastructure changes.
| [[adopt-dagger-ci]] | Adopt Dagger as CI/CD build engine |
| [[upstream-fork-strategy]] | Stacked-branch forking strategy for upstream projects |
| [[adopt-oidc-provider]] | Deploy OIDC identity provider for SSO across services |
| [[upgrade-grafana-helm-chart]] | Upgrade Grafana Helm chart from 8.8.2 to 11.x |
| [[upgrade-grafana]] | Upgrade Grafana to 12.x with kustomize and home-built container |
| [[operationalize-reolink-camera]] | Cloud-free NVR with Frigate and ring buffer recording |
## Ringtail
@ -95,6 +95,14 @@ Mikado chain for deploying Authentik. Track progress with `mise run docs-mikado
- [[create-authentik-secrets]]
- [[migrate-grafana-to-authentik]]
## Grafana
Mikado chain for upgrading Grafana to 12.x with kustomize and home-built containers. Track progress with `mise run docs-mikado upgrade-grafana`.
- [[upgrade-grafana]]
- [[kustomize-grafana-deployment]]
- [[build-grafana-container]]
## Forgejo Runner
Mikado chain for upgrading the k8s forgejo-runner daemon from v6.3.1 to v12.x. Track progress with `mise run docs-mikado upgrade-k8s-runner`.