kubernetes nodes notready 解决思路

逃离我推掉我的手 2022-05-25 02:57 223阅读 0赞

**问题情况**

[root@test-master-113 ~]# kubectl get nodes 
    NAME              STATUS                            AGE       VERSION
    test-master-113   Ready,SchedulingDisabled,master   347d      v1.7.6
    test-slave-114    Ready                             206d      v1.7.6-custom
    test-slave-115    NotReady                          292d      v1.7.6-custom
    test-slave-116    Ready                             164d      v1.7.6-custom
    test-slave-117    Ready                             292d      v1.7.6-custom

not ready 的节点上的pod的状况

kubectl get pods -n kube-system -owide | grep test-slave-115
    kubectl-m77z1                               1/1       NodeLost   1          24d       192.168.128.47    test-slave-115
    kube-proxy-5h2gw                            1/1       NodeLost   1          24d       10.39.0.115       test-slave-115
    filebeat-lvk51                              1/1       NodeLost   66         24d       192.168.128.24    test-slave-115
    //其中calico的容器也起不来

有问题的节点kubelet的日志

[root@test-slave-115 ~]# journalctl -f -u kubelet
    -- Logs begin at Fri 2018-05-04 13:21:34 CST. --
    May 07 01:30:58 test-slave-115 kubelet[3318]: INFO:0507 01:30:50.951587    3318 fsHandler.go:131] du and find on following dirs took 4.330195473s: [ /var/lib/docker/containers/18d5af2341f7a236bf69aaef16f89928f3f75f11bb4e1940ee59ecc72892933b]
    May 07 01:31:12 test-slave-115 kubelet[3318]: WARNING:0507 01:30:52.520159    3318 image_gc_manager.go:165] [imageGCManager] Failed to monitor images: rpc error: code = 4 desc = context deadline exceeded
    May 07 01:32:00 test-slave-115 kubelet[3318]: INFO:0507 01:31:55.922308    3318 fsHandler.go:131] du and find on following dirs took 28.910714943s: [ /var/lib/docker/containers/5c3b452fd9335d725b04d6f298ccd01d4b3f591b3e30fc73032af9e2f97d4563]
    May 07 01:32:08 test-slave-115 kubelet[3318]: INFO:0507 01:32:02.456758    3318 kubelet.go:1820] skipping pod synchronization - [container runtime is down PLEG is not healthy: pleg was last seen active 3h23m37.650989275s ago; threshold is 3m0s]
    May 07 01:32:10 test-slave-115 kubelet[3318]: ERROR:0507 01:32:07.963481    3318 container_manager_linux.go:98] Unable to ensure the docker processes run in the desired containers
    May 07 01:32:11 test-slave-115 kubelet[3318]: INFO:0507 01:32:03.185036    3318 fsHandler.go:131] du and find on following dirs took 1m12.441587857s: [ /var/lib/docker/containers/eece9416bc08782ab170ce1f7512435d8e39e092b49eed735c61e1885f20c878]
    May 07 01:32:13 test-slave-115 kubelet[3318]: ERROR:0507 01:32:13.173524    3318 remote_runtime.go:411] Status from runtime service failed: rpc error: code = 4 desc = context deadline exceeded
    May 07 01:32:16 test-slave-115 kubelet[3318]: INFO:0507 01:32:13.093159    3318 logs.go:41] http: TLS handshake error from 10.39.0.113:53854: write tcp 10.39.0.115:10250->10.39.0.113:53854: write: broken pipe
    May 07 01:32:39 test-slave-115 kubelet[3318]: WARNING:0507 01:32:35.117411    3318 raw.go:87] Error while processing event ("/sys/fs/cgroup/cpu,cpuacct/system.slice/zabbix-agent.service": 0x40000100 == IN_CREATE|IN_ISDIR): open /sys/fs/cgroup/cpu,cpuacct/system.slice/zabbix-agent.service: no such file or directory
    May 07 01:32:39 test-slave-115 kubelet[3318]: INFO:0507 01:32:38.982705    3318 logs.go:41] http: TLS handshake error from 10.39.0.113:54218: EOF

执行`docker ps`或者其他docker命令返回都非常地慢

问题解决

//重启docker
    systemctl restart docker

问题解决

[root@test-master-113 ~]# kubectl get pods --all-namespaces -owide | grep test-slave-115
    kube-system      calico-node-6fqgq                           2/2       Running            22         24d       10.39.0.115       test-slave-115
    kube-system      filebeat-lvk51                              1/1       Running            67         24d       192.168.128.24    test-slave-115
    kube-system      kube-proxy-5h2gw                            1/1       Running            2          24d       10.39.0.115       test-slave-115
    kube-system      kubectl-m77z1                               1/1       Running            2          24d       192.168.128.47    test-slave-115