Web

Etcd Defragmentation: Reclaiming Space Without Cluster Disruption

My etcd database was 508 MB on disk and only 84 MB of it held live data. The other 400-odd megabytes were free pages that etcd had no intention of h…

Diagnosing KubeAPIErrorBudgetBurn: When a 7-Year-Old Disk Takes Down Your Control Plane

If you manage Kubernetes on bare metal or on prem environments, you'll eventually encounter the KubeAPIErrorBudgetBurn alert from the kube-prometheu…

etcd: mvcc: database space exceeded: full recovery guide for on-prem Kubernetes

It was a regular working day when the first alert landed. Kubernetes health check showing the control plane was degraded. I'd seen these before. Usu…