Applying kube-flannel pod failed.
The cni of this cluster has been built by calico. After i got this cluster, run kubeadm reset to clear cluster and rebuild it again. But flannel cannot work, here is the output:
node information
$ sudo kubectl get nodes --kubeconfig ~/.kube/config
NAME STATUS ROLES AGE VERSION
work10 Ready control-plane 23h v1.28.2
pod information
$ sudo kubectl get all -A --kubeconfig ~/.kube/config
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-flannel pod/kube-flannel-ds-mhqg7 0/1 CrashLoopBackOff 273 (4m31s ago) 22h
kube-system pod/coredns-66f779496c-m88kk 0/1 Running 0 23h
kube-system pod/coredns-66f779496c-mqlvm 0/1 Running 0 23h
pod/kube-flannel-ds-mhqg7 log
$ sudo kubectl logs pod/kube-flannel-ds-mhqg7 -n kube-flannel --kubeconfig ~/.kube/config
Defaulted container "kube-flannel" out of: kube-flannel, install-cni-plugin (init), install-cni (init)
I0411 15:33:29.805563 1 main.go:209] CLI flags config: {etcdEndpoints:http://127.0.0.1:4001,http://127.0.0.1:2379 etcdPrefix:/coreos.com/network etcdKeyfile: etcdCertfile: etcdCAFile: etcdUsername: etcdPassword: version:false kubeSubnetMgr:true kubeApiUrl: kubeAnnotationPrefix:flannel.alpha.coreos.com kubeConfigFile: iface:[] ifaceRegex:[] ipMasq:true ifaceCanReach: subnetFile:/run/flannel/subnet.env publicIP: publicIPv6: subnetLeaseRenewMargin:60 healthzIP:0.0.0.0 healthzPort:0 iptablesResyncSeconds:5 iptablesForwardRules:true netConfPath:/etc/kube-flannel/net-conf.json setNodeNetworkUnavailable:true}
W0411 15:33:29.805639 1 client_config.go:617] Neither --kubeconfig nor --master was specified. Using the inClusterConfig. This might not work.
E0411 15:33:29.814160 1 main.go:226] Failed to create SubnetManager: error retrieving pod spec for 'kube-flannel/kube-flannel-ds-mhqg7': Get "https://10.96.0.1:443/api/v1/namespaces/kube-flannel/pods/kube-flannel-ds-mhqg7": tls: failed to verify certificate: x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying to verify candidate authority certificate "kubernetes")
Applying kube-flannel pod failed.
The cni of this cluster has been built by calico. After i got this cluster, run
kubeadm resetto clear cluster and rebuild it again. But flannel cannot work, here is the output:Your Environment
docker.io/flannel/flannel:v0.24.0