오류 : inotify_add_watch /sys/fs/cgroup/cpuacct,cpu: no such file or directory

 

 

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.

 

[해결]

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!

---