Appease kubelet warnings on docker for mac #705
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On my environment, the name=systemd entry in /proc/self/cgroup looks like: 13:name=systemd:/docker/917b388b40c70b17a3283d852d38bfcdc84d1bf8242e32a779eacd98a610e499 Kubelet periodically complains like: E0802 06:42:52.667123 1 summary_sys_containers.go:47] Failed to get system container stats for "/docker/917b388b40c70b17a3283d852d38bfcdc84d1bf8242e32a779eacd98a610e499/kube-proxy": failed to get cgroup stats for "/docker/917b388b40c70b17a3283d852d38bfcdc84d1bf8242e32a779eacd98a610e499/kube-proxy": failed to get container info for "/docker/917b388b40c70b17a3283d852d38bfcdc84d1bf8242e32a779eacd98a610e499/kube-proxy": unknown container "/docker/917b388b40c70b17a3283d852d38bfcdc84d1bf8242e32a779eacd98a610e499/kube-proxy"
| @@ -176,6 +176,8 @@ func checkCgroups() (root string, hasCFS bool, hasPIDs bool) { | |||
| i := strings.LastIndex(last, ".slice") | |||
| if i > 0 { | |||
| root = "/systemd" + last[:i+len(".slice")] | |||
| } else { | |||
| root = "/systemd" | |||
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Seems odd that /systemd would fix this. Does the below also address the problem?
| root = "/systemd" | |
| root = "/" |
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i tried it.
it yielded the messages like the following.
node_1 | W0806 02:51:34.700760 1 container_manager_linux.go:608] [ContainerManager] Failed to ensure state of "/": failed to move PID 1 (in "/docker/2fe79e61aa25ce952427a8261a795af5ecab64fe4dda22af14eb6416f784648e/kube-proxy") to "/": cpuset: cgroup parent path outside cgroup root
the cgroups tree in the container looks like the following.
spacetanuki% docker-compose exec node find /sys/fs/cgroup -name kube*
/sys/fs/cgroup/systemd/kube-proxy
/sys/fs/cgroup/systemd/kubepods
/sys/fs/cgroup/pids/kube-proxy
/sys/fs/cgroup/pids/kubepods
/sys/fs/cgroup/hugetlb/kube-proxy
/sys/fs/cgroup/hugetlb/kubepods
/sys/fs/cgroup/net_prio/kube-proxy
/sys/fs/cgroup/net_prio/kubepods
/sys/fs/cgroup/perf_event/kube-proxy
/sys/fs/cgroup/perf_event/kubepods
/sys/fs/cgroup/net_cls/kube-proxy
/sys/fs/cgroup/net_cls/kubepods
/sys/fs/cgroup/freezer/kube-proxy
/sys/fs/cgroup/freezer/kubepods
/sys/fs/cgroup/devices/kube-proxy
/sys/fs/cgroup/devices/kubepods
/sys/fs/cgroup/memory/kube-proxy
/sys/fs/cgroup/memory/kubepods
/sys/fs/cgroup/blkio/kube-proxy
/sys/fs/cgroup/blkio/kubepods
/sys/fs/cgroup/cpuacct/kube-proxy
/sys/fs/cgroup/cpuacct/kubepods
/sys/fs/cgroup/cpu/kube-proxy
/sys/fs/cgroup/cpu/kubepods
/sys/fs/cgroup/cpuset/kube-proxy
/sys/fs/cgroup/cpuset/kubepods
spacetanuki%
On my environment, the name=systemd entry in /proc/self/cgroup
looks like:
Kubelet periodically complains like: