c9fd51d5bc
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The prune step called bare 'ctr', which has never existed as a standalone binary on these k3s nodes - only the k3s binary itself (bundling 'k3s ctr'/'k3s crictl' subcommands) lives at /usr/local/bin. The failure was silently swallowed by '|| true', so the CronJob has been reporting Complete every 10 minutes for 68 days while doing nothing; node disk sat at 83% used. Verified live: patched the CronJob's command to invoke /usr/local/bin/k3s ctr directly, manually triggered a run, confirmed it actually prunes now (deleted ~75 dangling images). This CronJob and its ServiceAccount previously existed only as a manually-applied live object, not tracked in git. Adding the manifests here and wiring them into clusters/production so Flux manages it going forward instead of it silently drifting again.
77 lines
3 KiB
YAML
77 lines
3 KiB
YAML
apiVersion: batch/v1
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kind: CronJob
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metadata:
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name: nxtgauge-containerd-cleanup
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namespace: kube-system
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spec:
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schedule: "*/10 * * * *"
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concurrencyPolicy: Forbid
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startingDeadlineSeconds: 300
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successfulJobsHistoryLimit: 1
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failedJobsHistoryLimit: 1
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jobTemplate:
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spec:
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activeDeadlineSeconds: 540
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template:
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spec:
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serviceAccountName: nxtgauge-containerd-cleanup
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hostNetwork: true
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restartPolicy: OnFailure
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nodeSelector:
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cleanup-target: "true"
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tolerations:
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- key: node-role.kubernetes.io/control-plane
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operator: Exists
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effect: NoSchedule
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containers:
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- name: cleanup
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image: ci.nxtgauge.com/admin/alpine:3.19
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securityContext:
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privileged: true
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command:
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- /bin/sh
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- -ec
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- |
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echo "=== before ==="
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df -h /var/lib/rancher/k3s/agent/containerd || true
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du -sh /var/lib/rancher/k3s/agent/containerd/io.containerd.snapshotter.v1.overlayfs 2>/dev/null || true
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du -sh /var/lib/rancher/k3s/agent/containerd/io.containerd.content.v1.content 2>/dev/null || true
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echo "=== prune ==="
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# No standalone ctr/crictl binary is installed on these k3s nodes;
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# only the k3s binary (bundling "k3s ctr"/"k3s crictl" subcommands) is
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# present at /usr/local/bin. Bare "ctr" always failed with "not found"
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# and was silently swallowed by "|| true", making this a 68-day no-op
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# (fixed 2026-08-15).
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/usr/local/bin/k3s ctr -n k8s.io images prune --all || true
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echo "=== after ==="
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df -h /var/lib/rancher/k3s/agent/containerd || true
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du -sh /var/lib/rancher/k3s/agent/containerd/io.containerd.snapshotter.v1.overlayfs 2>/dev/null || true
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du -sh /var/lib/rancher/k3s/agent/containerd/io.containerd.content.v1.content 2>/dev/null || true
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volumeMounts:
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- name: containerd-root
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mountPath: /var/lib/rancher/k3s/agent/containerd
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- name: run
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mountPath: /run
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- name: sys
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mountPath: /sys
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readOnly: true
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- name: bin
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mountPath: /usr/local/bin
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readOnly: true
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volumes:
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- name: containerd-root
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hostPath:
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path: /var/lib/rancher/k3s/agent/containerd
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type: Directory
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- name: run
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hostPath:
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path: /run
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type: Directory
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- name: sys
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hostPath:
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path: /sys
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type: Directory
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- name: bin
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hostPath:
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path: /usr/local/bin
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type: Directory
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