Kubernetes 시작 전 점검 사항

 

● Nodes 확인

[vagrant@ms ~]$ kubectl get nodes
NAME              STATUS   ROLES           AGE     VERSION
ms.example.com    Ready    control-plane   3d23h   v1.29.2
wk1.example.com   Ready    <none>          3d23h   v1.29.2
wk2.example.com   Ready    <none>          3d23h   v1.29.2

 

 

 

● Namespace 확인

[vagrant@ms ~]$ kubectl get ns
NAME              STATUS   AGE
default           Active   3d23h
kube-flannel      Active   3d23h
kube-node-lease   Active   3d23h
kube-public       Active   3d23h
kube-system       Active   3d23h
myns              Active   3d

 

 

 

● Pods 확인

[vagrant@ms ~]$ kubectl get pods  -n kube-system
NAME                                     READY   STATUS    RESTARTS      AGE
coredns-76f75df574-dnn6l                 1/1     Running   2 (11h ago)   3d23h
coredns-76f75df574-xx9lp                 1/1     Running   2 (11h ago)   3d23h
etcd-ms.example.com                      1/1     Running   2 (11h ago)   3d23h
kube-apiserver-ms.example.com            1/1     Running   2 (11h ago)   3d23h
kube-controller-manager-ms.example.com   1/1     Running   2 (11h ago)   3d23h
kube-proxy-2g2fg                         1/1     Running   2 (11h ago)   3d23h
kube-proxy-f86lt                         1/1     Running   2 (11h ago)   3d23h
kube-proxy-ghfmd                         1/1     Running   2 (11h ago)   3d23h
kube-scheduler-ms.example.com            1/1     Running   2 (11h ago)   3d23h

 

 

 

 

● Flannel 확인

[vagrant@ms ~]$ kubectl get pods -n kube-flannel
NAME                    READY   STATUS    RESTARTS      AGE
kube-flannel-ds-84jkj   1/1     Running   2 (11h ago)   3d23h
kube-flannel-ds-p4lpr   1/1     Running   2 (11h ago)   3d23h
kube-flannel-ds-qp7d5   1/1     Running   2 (11h ago)   3d23h

 

 

 

 

 

 

각 노드의 기본적인 확인 사항

 

 

 

 

● kube-proxy

[vagrant@ms ~]$ pgrep -fl kube-proxy
1597 kube-proxy

 

 

 

● kubelet

[vagrant@ms ~]$ pgrep -fl kubelet
917 kubelet
1279 kube-apiserver

 

 

 

● containerd

[vagrant@ms ~]$ pgrep -fl containerd
868 containerd
917 kubelet
1086 containerd-shim
1117 containerd-shim
1118 containerd-shim
1205 containerd-shim
1440 containerd-shim
1519 containerd-shim
2260 containerd-shim
2385 containerd-shim