Kubernetes问题整理

Kubernetes问题整理

CrashLoopBackOff错误

CrashLoopBackOff的含义是&＃xff0c;Kubernetes试图启动该Pod&＃xff0c;但是过程中出现错误&＃xff0c;导致容器启动失败或者正在被删除。

pod报错"Back-off restarting failed container"解决办法
链接地址&＃xff1a;https://blog.csdn.net/sqhren626232/article/details/101013390

解决方法&＃xff1a;在deployment申明镜像的后面加上命令
command: [ “/bin/bash”, “-ce”, “tail -f /dev/null” ]
command: [“sleep”,“3600”]

查找问题

[root&＃64;master1 ~]# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
activemq-deployment-d89bcb469-5tlkn 0/1 CrashLoopBackOff 5 7m35s 10.244.3.7 node2

查看pod的详细信息&＃xff08;图&＃xff09;

Pod 一直处于 ImagePullBackOff 状态

https://www.bookstack.cn/read/kubernetes-practice-guide/troubleshooting-problems-pod-keep-imagepullbackoff.md

k8s创建应用一直卡在 ContainerCreating的解决办法

https://www.cnbugs.com/post-3276.html

Unable to update cni config: No networks found in /etc/cni/net.d

vi /usr/lib/systemd/system/kubelet.service.d/10-kubeadm.conf
添加
Environment&＃61;“KUBELET_NETWORK_ARGS&＃61;–network-plugin&＃61;cni --cni-conf-dir&＃61;/etc/cni/ --cni-bin-dir&＃61;/opt/cni/bin”

重新加载
systemctl daemon-reload
systemctl restart kubelet

Kubernetes报错Failed to get system container stats for “/system.slice/docker.service”: failed to get cgroup stats for “/system.slice/docker.service”

[root&＃64;master1 net.d]# systemctl status kubelet
● kubelet.service - kubelet: The Kubernetes Node AgentLoaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)Drop-In: /usr/lib/systemd/system/kubelet.service.d└─10-kubeadm.confActive: active (running) since Sun 2021-03-21 09:43:20 CST; 1 day 7h agoDocs: https://kubernetes.io/docs/Main PID: 829 (kubelet)Tasks: 17Memory: 93.6MCGroup: /system.slice/kubelet.service└─829 /usr/bin/kubelet --bootstrap-kubeconfig&＃61;/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig&＃61;/etc/kubernetes/kubelet.conf --config&＃61;/var/lib/kubelet/config.yaml --cgroup-driver&＃61;systemd --network-plugin&＃61;cni --pod-infra-...Mar 22 17:21:59 master1 kubelet[829]: E0322 17:21:59.967531 829 summary_sys_containers.go:47] Failed to get system container stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service":...
Mar 22 17:22:10 master1 kubelet[829]: E0322 17:22:09.999160 829 summary_sys_containers.go:47] Failed to get system container stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service":...
Mar 22 17:22:20 master1 kubelet[829]: E0322 17:22:20.018321 829 summary_sys_containers.go:47] Failed to get system container stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service":...
Mar 22 17:22:30 master1 kubelet[829]: E0322 17:22:30.044959 829 summary_sys_containers.go:47] Failed to get system container stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service":...
Mar 22 17:22:40 master1 kubelet[829]: E0322 17:22:40.069868 829 summary_sys_containers.go:47] Failed to get system container stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service":...