[k8s]calico网络替换为flannel网络时，重建pod时异常。Failed to create pod sandbox

calico网络替换为flannel网络后，重建pod使用flannel组件分配ip。

[root@k8s-master01 net.d]# kubectl get pod -n kube-system 
NAME                                  READY   STATUS              RESTARTS   AGE
coredns-6cc56c94bd-dzvfm              0/1     ContainerCreating   0          7m8s
prometheus-8474f8559d-thmqn           0/2     Init:0/1            0          17h
prometheus-adapter-7f94cc997d-qvttk   0/1     CrashLoopBackOff    217        35d


Events:
  Type     Reason                  Age               From               Message
  ----     ------                  ----              ----               -------
  Normal   Scheduled               71s               default-scheduler  Successfully assigned kube-system/coredns-6cc56c94bd-dzvfm to k8s-node01
  Warning  FailedCreatePodSandBox  71s               kubelet            Failed to create pod sandbox: rpc error: code = Unknown desc = [failed to set up sandbox container "74326ae116c4502f1d9772dc0e19c6e7d8c13df4855e0354b631c10ccef3aedf" network for pod "coredns-6cc56c94bd-dzvfm": networkPlugin cni failed to set up pod "coredns-6cc56c94bd-dzvfm_kube-system" network: error getting ClusterInformation: connection is unauthorized: Unauthorized, failed to clean up sandbox container "74326ae116c4502f1d9772dc0e19c6e7d8c13df4855e0354b631c10ccef3aedf" network for pod "coredns-6cc56c94bd-dzvfm": networkPlugin cni failed to teardown pod "coredns-6cc56c94bd-dzvfm_kube-system" network: error getting ClusterInformation: connection is unauthorized: Unauthorized]
  Normal   SandboxChanged          9s (x6 over 70s)  kubelet            Pod sandbox changed, it will be killed and re-created.

 

[root@k8s-master01 files]# cd /etc/cni/net.d/
[root@k8s-master01 net.d]# ll
total 12
-rw-r--r-- 1 root root  613 Feb 16 11:41 10-calico.conflist
-rw-r--r-- 1 root root  292 Feb 17 17:17 10-flannel.conflist
-rw------- 1 root root 3066 Feb 16 11:41 calico-kubeconfig

删除calico相关的文件即可正常创建pod。每个节点都执行。

[root@k8s-node01 net.d]# ll
total 4
-rw-r--r-- 1 root root 292 Feb 17 17:18 10-flannel.conflist
[root@k8s-master01 prometheus]# kubectl get pod -n kube-system 
NAME                                  READY   STATUS    RESTARTS   AGE
coredns-6cc56c94bd-92vrg              1/1     Running   0          43