Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal Scheduled 27s default-scheduler Successfully assigned kube-system/coredns-7ff77c879f-hkj5z to centos7 Warning FailedCreatePodSandBox 25s kubelet, centos7 Failed to create pod sandbox: rpc error: code = Unknown desc = [failed to set up sandbox container "fdfc6a8f12bade06b73930dea5f7a3698ebcdabfea59fa1290fde19fbdb5891a" network for pod "coredns-7ff77c879f-hkj5z": networkPlugin cni failed to set up pod "coredns-7ff77c879f-hkj5z_kube-system" network: error getting ClusterInformation: Get "https://[10.96.0.1]:443/apis/crd.projectcalico.org/v1/clusterinformations/default": x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying to verify candidate authority certificate "kubernetes"), failed to clean up sandbox container "fdfc6a8f12bade06b73930dea5f7a3698ebcdabfea59fa1290fde19fbdb5891a" network for pod "coredns-7ff77c879f-hkj5z": networkPlugin cni failed to teardown pod "coredns-7ff77c879f-hkj5z_kube-system" network: error getting ClusterInformation: Get "https://[10.96.0.1]:443/apis/crd.projectcalico.org/v1/clusterinformations/default": x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying to verify candidate authority certificate "kubernetes")] Normal SandboxChanged 9s (x2 over 25s) kubelet, centos7 Pod sandbox changed, it will be killed and re-created. [root@centos7 ~]# ls /etc/cni/ net.d [root@centos7 ~]# ls /etc/cni/net.d/ 10-calico.conflist 10-flannel.conflist calico-kubeconfig [root@centos7 ~]# rm -rf /etc/cni/net.d/10-calico.conflist [root@centos7 ~]# rm -rf /etc/cni/net.d/calico-kubeconfig
mkdir -p $HOME/.kube cp -i /etc/kubernetes/admin.conf $HOME/.kube/config chown $(id -u):$(id -g) $HOME/.kube/config echo export KUBECONFIG=~/.kube/config>> ~/.bashrc source ~/.bashrc
[root@centos7 ~]# kubectl get pods --all-namespaces NAMESPACE NAME READY STATUS RESTARTS AGE kube-system coredns-7ff77c879f-hkj5z 1/1 Running 0 97s kube-system coredns-7ff77c879f-w5v8q 1/1 Running 0 3m46s kube-system etcd-centos7 1/1 Running 0 28m kube-system kube-apiserver-centos7 1/1 Running 0 28m kube-system kube-controller-manager-centos7 1/1 Running 0 28m kube-system kube-flannel-ds-arm64-gmljw 1/1 Running 0 7m31s kube-system kube-proxy-dv7lj 1/1 Running 0 28m kube-system kube-scheduler-centos7 1/1 Running 0 28m