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오류 : inotify_add_watch /sys/fs/cgroup/cpuacct,cpu: no such file or directory
상황
cAdvisor git에 있는 kubernetes deploy인 아래의 링크를 참고해서
https://github.com/google/cadvisor/blob/master/deploy/kubernetes/base/daemonset.yaml
kubernetes cluster에 cAdvisor Daemonset 를 배포했는데
다음과 같은 오류가 발생함.
[오류 메세지]
Could not configure a source for OOM detection, disabling OOM events: open /dev/kmsg: no such file or directory
Failed to start container manager: inotify_add_watch /sys/fs/cgroup/cpuacct,cpu: no such file or directory
none of the resources are being tracked.
원인
해당 오류는 volume mount에 관한 오류임.
/sys/fs/cgroup 에 mount할 volume이 명시되어있지 않아서
pod가 정상적으로 running 되지 못함.
해결책
아래의 빨간부분과 같이 cgroup 관련 volume을 추가해줘야함
host에 / 경로에 cgroup 디렉터리도 생성해줘야함
| apiVersion: apps/v1 # for Kubernetes versions before 1.9.0 use apps/v1beta2 kind: DaemonSet metadata: name: cadvisor namespace: cadvisor spec: selector: matchLabels: name: cadvisor template: metadata: labels: name: cadvisor spec: tolerations: - key: node-role.kubernetes.io/master effect: NoSchedule containers: - name: cadvisor image: google/cadvisor:latest securityContext: privileged: true resources: requests: memory: 200Mi cpu: 150m limits: memory: 2000Mi cpu: 300m volumeMounts: - name: rootfs mountPath: /rootfs readOnly: true - name: var-run mountPath: /var/run readOnly: true - name: sys mountPath: /sys readOnly: true - name: docker mountPath: /var/lib/docker readOnly: true - name: disk mountPath: /dev/disk readOnly: true - name: cgroup mountPath: /sys/fs/cgroup readOnly: true ports: - name: http containerPort: 8080 protocol: TCP automountServiceAccountToken: false terminationGracePeriodSeconds: 30 volumes: - name: rootfs hostPath: path: / - name: var-run hostPath: path: /var/run - name: sys hostPath: path: /sys - name: docker hostPath: path: /var/lib/docker - name: disk hostPath: path: /dev/disk - name: cgroup hostPath: path: /cgroup |
제 글을 복사할 시 출처를 명시해주세요.
글에 오타, 오류가 있다면 댓글로 알려주세요! 바로 수정하겠습니다!
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