017.Kubernetes二进制部署检查集群

一 验证集群功能

1.1 检查节点状态

1 [root@k8smaster01 ~]# kubectl get nodes

1.2 创建测试文件

1 [root@k8smaster01 ~]# cd /opt/k8s/work
2 [root@k8smaster01 work]# cat > nginx-ds.yml <<EOF
3 apiVersion: v1
4 kind: Service
5 metadata:
6   name: nginx-ds
7   labels:
8     app: nginx-ds
9 spec:
10   type: NodePort
11   selector:
12     app: nginx-ds
13   ports:
14   - name: http
15     port: 80
16     targetPort: 80
17 ---
18 apiVersion: extensions/v1beta1
19 kind: DaemonSet
20 metadata:
21   name: nginx-ds
22   labels:
23     addonmanager.kubernetes.io/mode: Reconcile
24 spec:
25   template:
26     metadata:
27       labels:
28         app: nginx-ds
29     spec:
30       containers:
31       - name: my-nginx
32         image: nginx:1.7.9
33         ports:
34         - containerPort: 80
35 EOF
36 [root@k8smaster01 work]# kubectl create -f nginx-ds.yml

1.3 检查各节点的 Pod IP 连通性

1 [root@k8smaster01 ~]# kubectl get pods  -o wide|grep nginx-ds

1 [root@k8smaster01 ~]# source /opt/k8s/bin/environment.sh
2 [root@k8smaster01 ~]# for all_ip in ${ALL_IPS[@]}
3   do
4     echo ">>> ${all_ip}"
5     ssh ${all_ip} "ping -c 1 172.30.240.2"
6     ssh ${all_ip} "ping -c 1 172.30.248.2"
7     ssh ${all_ip} "ping -c 1 172.30.144.2"
8     ssh ${all_ip} "ping -c 1 172.30.192.2"
9     ssh ${all_ip} "ping -c 1 172.30.136.2"
10   done
11

1.4 检查服务 IP 和端口可达性

1 [root@k8smaster01 ~]# kubectl get svc |grep nginx-ds
2 nginx-ds     NodePort    10.254.168.17   <none>        80:32760/TCP   34m
3 [root@k8smaster01 ~]# source /opt/k8s/bin/environment.sh
4 [root@k8smaster01 ~]# for node_ip in ${NODE_IPS[@]}
5   do
6     echo ">>> ${node_ip}"
7     ssh ${node_ip} "curl -s 10.254.168.17"
8   done
9

1.5 检查服务的 NodePort 可达性

1 [root@k8smaster01 ~]# source /opt/k8s/bin/environment.sh
2 [root@k8smaster01 ~]# for node_ip in ${NODE_IPS[@]}
3   do
4     echo ">>> ${node_ip}"
5     ssh ${node_ip} "curl -s ${node_ip}:32760"
6   done