cluster-observability
Getting etcd's Metrics Out of Talos
etcd on Talos is not a pod, so nothing scraped it. One patch, a restart Talos refuses, a rolling reboot, and alerts so the metrics can't go quiet.
cluster-observability
cluster-observability
Teaching Prometheus to Read an eMMC
A flat line can mean a healthy eMMC or a dead collector. An arm64 exporter, eleven tested alert rules and a dashboard that tell the two apart.
cluster-observability
Cluster-Wide Certificate Expiry Monitoring
cert-manager covered 18 certificates. Thirteen more had no owner and five expire on one day. Closing the gap with x509-certificate-exporter.