“Container runtime network not ready“ networkReady=“NetworkReady=false reason:NetworkPluginNotReady_container runtime network not ready" networkready=

k8s集群初始化后， node3节点加入集群， 状态Noready

1、2、查看node3节点kubelet状态，以及日志

问题点："Container runtime network not ready" networkReady="NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitialized"

原因：缺少网络cni

[root@node3 ~]# systemctl status kubelet
● kubelet.service - kubelet: The Kubernetes Node Agent
   Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)
  Drop-In: /usr/lib/systemd/system/kubelet.service.d
           └─10-kubeadm.conf
   Active: active (running) since 三 2024-02-28 11:25:08 CST; 3h 37min ago
     Docs: https://kubernetes.io/docs/
 Main PID: 29889 (kubelet)
   CGroup: /system.slice/kubelet.service
           └─29889 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --conf...
 
2月 28 15:02:08 node3 kubelet[29889]: E0228 15:02:08.473967   29889 file_linux.go:61] "Unable to read config path" err="path does not exi...nifests"
2月 28 15:02:09 node3 kubelet[29889]: E0228 15:02:09.332189   29889 file.go:104] "Unable to read config path" err="path does not exist, i...nifests"
2月 28 15:02:09 node3 kubelet[29889]: E0228 15:02:09.474789   29889 file_linux.go:61] "Unable to read config path" err="path does not exi...nifests"
2月 28 15:02:10 node3 kubelet[29889]: E0228 15:02:10.475357   29889 file_linux.go:61] "Unable to read config path" err="path does not exi...nifests"
2月 28 15:02:10 node3 kubelet[29889]: E0228 15:02:10.553576   29889 kubelet.go:2391] "Container runtime network not ready" networkReady="...ialized"
2月 28 15:02:11 node3 kubelet[29889]: I0228 15:02:11.026553   29889 cni.go:240] "Unable to update cni config" err="no networks found in /...i/net.d"
2月 28 15:02:11 node3 kubelet[29889]: E0228 15:02:11.475784   29889 file_linux.go:61] "Unable to read config path" err="path does not exi...nifests"
2月 28 15:02:12 node3 kubelet[29889]: E0228 15:02:12.476201   29889 file_linux.go:61] "Unable to read config path" err="path does not exi...nifests"
2月 28 15:02:13 node3 kubelet[29889]: E0228 15:02:13.477159   29889 file_linux.go:61] "Unable to read config path" err="path does not exi...nifests"
2月 28 15:02:14 node3 kubelet[29889]: E0228 15:02:14.477465   29889 file_linux.go:61] "Unable to read config path" err="path does not exi...nifests"
Hint: Some lines were ellipsized, use -l to show in full.
 
 
[root@node3 ~]# journalctl -u kubelet | tail -n 100
2月 28 15:01:33 node3 kubelet[29889]: E0228 15:01:33.454130   29889 file_linux.go:61] "Unable to read config path" err="path does not exist, ignoring" path="/etc/kubernetes/manifests"
2月 28 15:01:34 node3 kubelet[29889]: E0228 15:01:34.454646   29889 file_linux.go:61] "Unable to read config path" err="path does not exist, ignoring" path="/etc/kubernetes/manifests"
2月 28 15:01:35 node3 kubelet[29889]: E0228 15:01:35.455584   29889 file_linux.go:61] "Unable to read config path" err="path does not exist, ignoring" path="/etc/kubernetes/manifests"
2月 28 15:01:35 node3 kubelet[29889]: E0228 15:01:35.511148   29889 kubelet.go:2391] "Container runtime network not ready" networkReady="NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitialized"

3、复制cni到问题节点

[root@master kube]# scp  /etc/cni/net.d/*  root@node3:/etc/cni/net.d/
10-calico.conflist                                                                                                 100%  657    24.4KB/s   00:00    
calico-kubeconfig                                                                                                  100% 2712    98.5KB/s   00:00    
 
 
#### 验证
[root@master kube]# kubectl get nodes
NAME     STATUS   ROLES                  AGE     VERSION
master   Ready    control-plane,master   4h46m   v1.23.15
node3    Ready    <none>                 3h39m   v1.23.15