gsdavidp/home-server

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Nikholas Pcenicni 445a1ac211 Update Headlamp and Vault documentation; enhance RBAC configurations in Argo CD. Modify Headlamp README to clarify sessionTTL handling and ServiceAccount permissions. Add Cilium network policy instructions to Vault README. Update Argo CD values.yaml for default RBAC settings, ensuring local admin retains full access while new users start with read-only permissions. Reflect these changes in CLUSTER-BUILD.md.

2026-03-28 02:02:17 -04:00

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Runbook: etcd / Talos control plane

Symptoms: API flaps, etcd alarms, multiple control planes NotReady, upgrades stuck.

Checks

talosctl health and talosctl etcd status (with TALOSCONFIG; target a control-plane node if needed).
kubectl get nodes — control planes Ready; look for disk/memory pressure.
Talos version skew: talosctl version vs node image in talos/talconfig.yaml / Image Factory schematic.

Common fixes

One bad control plane: cordon/drain workloads only after confirming quorum; follow Talos maintenance docs for replace/remove.
Disk full on etcd volume: resolve host disk / system partition (Talos ephemeral vs user volumes per machine config).

References: Talos etcd, talos/README.md.