二进制部署多Master高可用K8S集群-v1.18（四）

八、验证集群状态

• 都为 Ready 且版本为 v1.18.6 时正常。

[root@k8s-master1 ~]# cd /opt/k8s/work
[root@k8s-master1 work]# kubectl get nodes
NAME          STATUS   ROLES    AGE     VERSION
k8s-master1   Ready    <none>   3h44m   v1.18.6
k8s-master2   Ready    <none>   3h43m   v1.18.6
k8s-master3   Ready    <none>   3h43m   v1.18.6
k8s-node1     Ready    <none>   3h44m   v1.18.6
k8s-node2     Ready    <none>   3h43m   v1.18.6
k8s-node3     Ready    <none>   3h43m   v1.18.6

[root@k8s-master1 ~]# cd /opt/k8s/work
[root@k8s-master1 work]# cat > nginx-test.yml <<EOF
apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  type: NodePort
  selector:
    app: nginx
  ports:
  - name: http
    port: 80
    targetPort: 80
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: nginx
  labels:
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: my-nginx
        image: nginx:1.16.1
        ports:
        - containerPort: 80
EOF

[root@k8s-master1 work]# kubectl apply -f nginx-test.yml
service/nginx-ds created
daemonset.apps/nginx-ds created

[root@k8s-master1 work]# kubectl get pods -o wide|grep nginx
nginx-66qf9                  1/1     Running            0          7m47s   10.68.107.193   k8s-node3   <none>           <none>
nginx-lrm4n                  1/1     Running            0          7m47s   10.68.36.67     k8s-node1   <none>           <none>
nginx-r7pln                  1/1     Running            0          7m47s   10.68.169.129   k8s-node2   <none>           <none>

[root@k8s-master1 work]# kubectl get pods  -o wide -l app=nginx

NAME          READY   STATUS    RESTARTS   AGE     IP              NODE        NOMINATED NODE   READINESS GATES
nginx-66qf9   1/1     Running   0          8m24s   10.68.107.193   k8s-node3   <none>           <none>
nginx-lrm4n   1/1     Running   0          8m24s   10.68.36.67     k8s-node1   <none>           <none>
nginx-r7pln   1/1     Running   0          8m24s   10.68.169.129   k8s-node2   <none>           <none>

• 在所有 worker 上分别 p文章来源(Source)：https://www.dqzboy.coming 上面三个 Pod IP，看是否连通

[root@k8s-master1 work]# for node_ip in ${WORK_IPS[@]}
  do
    echo ">>> ${node_ip}"
    ssh ${node_ip} "ping -c 1 10.68.107.193"
    ssh ${node_ip} "ping -c 1 10.68.36.67"
    ssh ${node_ip} "ping -c 1 10.68.169.129"
  done

[root@k8s-master1 work]# kubectl get svc -l app=nginx
NAME       TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE
nginx-ds   NodePort   10.254.212.37   <none>        80:32120/TCP   6m7s

可见：

• Service Cluster IP：10.254.212.37
• 服务端口：80
• NodePort 端文章来源(Source)：https://www.dqzboy.com口：32120
• 在所有 Node 上 curl Service IP

[root@k8s-master1 work]# for node_ip in ${WORK_IPS[@]}
  do
    echo ">>> ${node_ip}"
    ssh ${node_ip} "curl -s 10.254.212.37"
  done

• 没问题则全部Node节点输出nginx的欢迎页面

• 没问题同样也是全部Node节点输出nginx的欢迎页面

[root@k8s-master1 work]# for node_ip in ${WORK_IPS[@]}
  do
    echo ">>> ${node_ip}"
    ssh ${node_ip} "curl -s ${node_ip}:32120"
  done