k8s高可用集群9集群的可用性验证
作者：互联网
1查看集群中所有namespace里的容器。发现都是running状态
[root@k8s-master01 ~]#kubectl get pod --all-namespaces
2查看监控数据
[root@k8s-master01 ~]#kubectl top pod -n kube-system
3检查跨网是否可以访问pod
[root@k8s-master01 ~]#kubectl get pod --all-namespaces -o wide NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES kube-system calico-kube-controllers-6f6595874c-s9gz4 1/1 Running 0 3h28m 172.25.244.194 k8s-master01 <none> <none> kube-system calico-node-b98mk 1/1 Running 0 3h28m 10.0.0.205 k8s-master02 <non [root@k8s-master01 ~]#ping 10.0.0.205 PING 10.0.0.205 (10.0.0.205) 56(84) bytes of data. 64 bytes from 10.0.0.205: icmp_seq=1 ttl=64 time=10.3 ms 64 bytes from 10.0.0.205: icmp_seq=2 ttl=64 time=0.992 ms 64 bytes from 10.0.0.205: icmp_seq=3 ttl=64 time=2.79 ms 64 bytes from 10.0.0.205: icmp_seq=4 ttl=64 time=0.973 ms 64 bytes from 10.0.0.205: icmp_seq=5 ttl=64 time=0.478 ms
4测试pod之间是不是通的
[root@k8s-master01 ~]#kubectl get pod --all-namespaces -o wide NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES kube-system calico-kube-controllers-6f6595874c-s9gz4 1/1 Running 0 3h28m 172.25.244.194 k8s-master01 <none> <none> kube-system calico-node-b98mk 1/1 Running 0 3h28m 10.0.0.202 k8s-master02 <none> <none> kube-system calico-node-nhch2 1/1 Running 0 3h28m 10.0.0.205 k8s-node2 <non
#在master01中进行node02的pod执行命令 [root@k8s-master01 ~]#kubectl exec -it calico-node-nhch2 -n kube-system /bin/sh kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead. Defaulted container "calico-node" out of: calico-node, upgrade-ipam (init), install-cni (init), flexvol-driver (init) sh-4.4#
5要想外部访问一个应该，必须要暴漏一个端口，例如
[root@k8s-master01 ~]#kubectl get svc -n kubernetes-dashboard NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE dashboard-metrics-scraper ClusterIP 192.168.223.247 <none> 8000/TCP 96m kubernetes-dashboard NodePort 192.168.202.76 <none> 443:32081/TCP 96m [root@k8s-master01 ~]#kubectl edit svc kubernetes-dashboard Error from server (NotFound): services "kubernetes-dashboard" not found [root@k8s-master01 ~]#kubectl edit svc kubernetes-dashboard -n !$
selector:
k8s-app: kubernetes-dashboard
sessionAffinity: None
type: NodePort #修改此处为NodePort
标签：kubectl,k8s,可用性,master01,集群,kube,root,calico 来源： https://www.cnblogs.com/tyjs09/p/15942817.html