015.Kubernetes二进制集群检查测试

一 验证集群功能

1.1 检查节点状态

[root@master01 ~]# cd /opt/k8s/work/
[root@master01 work]# kubectl get cs
[root@master01 work]# kubectl cluster-info 
[root@master01 work]# kubectl get nodes

1.2 创建测试文件

[root@master01 ~]# cd /opt/k8s/work/
[root@master01 work]# source /root/environment.sh
[root@master01 work]# bash config/baseimage.sh		#提前pull镜像
[root@master01 work]# cat > nginx-ds.yml <<EOF
apiVersion: v1
kind: Service
metadata:
  name: nginx-svc
  labels:
    app: nginx-svc
spec:
  type: NodePort
  selector:
    app: nginx-ds
  ports:
  - name: http
    port: 80
    targetPort: 80
    nodePort: 8888
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: nginx-ds
  labels:
    app: nginx-ds
spec:
  selector:
    matchLabels:
      app: nginx-ds
  template:
    metadata:
      labels:
        app: nginx-ds
    spec:
      containers:
      - name: my-nginx
        image: nginx:1.19.0
        ports:
        - containerPort: 80
EOF
[root@master01 work]# kubectl create -f nginx-ds.yml

提示：本步骤操作仅需要在master01节点操作。

1.3 检查各节点的 Pod IP 连通性

[root@master01 work]# kubectl get pods  -o wide | grep nginx-ds

[root@master01 work]# for all_ip in ${ALL_IPS[@]}
  do
    echo ">>> ${all_ip}"
    ssh ${all_ip} "ping -c 1 10.10.96.2"
    ssh ${all_ip} "ping -c 1 10.10.80.2"
    ssh ${all_ip} "ping -c 1 10.10.176.2"
    ssh ${all_ip} "ping -c 1 10.10.216.2"
    ssh ${all_ip} "ping -c 1 10.10.168.2"
  done

提示：本步骤操作仅需要在master01节点操作。

1.4 检查服务 IP 和端口可达性

[root@master01 ~]# kubectl get svc |grep nginx-svc
[root@master01 ~]# cd /opt/k8s/work/
[root@master01 work]# source /root/environment.sh
[root@master01 work]# for node_ip in ${NODE_IPS[@]}
  do
    echo ">>> ${node_ip}"
    ssh ${node_ip} "curl -s 10.20.201.215"
  done

提示：本步骤操作仅需要在master01节点操作。

解释：

Service Cluster IP：10.20.201.215

服务端口：80

NodePort 端口：8888

1.5 检查服务的 NodePort 可达性

[root@master01 ~]# cd /opt/k8s/work/
[root@master01 work]# source /root/environment.sh
[root@master01 work]# for node_ip in ${NODE_IPS[@]}
  do
    echo ">>> ${node_ip}"
    ssh ${node_ip} "curl -s ${node_ip}:8888"
  done

提示：本步骤操作仅需要在master01节点操作。