Kubernetes集群部署之测试集群节点是否通信
1.创建一个测试用的nginx pod.[root@k8s-master ~]# kubectl run my-nginx --image=nginx --replicas=3 --port=802.查看获取IP情况[root@k8s-master ~]# kubectl get pod -o wideNAMEREADYSTATUSRESTARTSAGEIPNODENOMINATE
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1.创建一个测试用的nginx pod.
[root@k8s-master ~]# kubectl run my-nginx --image=nginx --replicas=3 --port=802.查看获取IP情况
[root@k8s-master ~]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
my-nginx-64fc468bd4-kqfpv 1/1 Running 0 62m 10.2.28.2 10.88.0.2 <none> <none>
my-nginx-64fc468bd4-nwr52 1/1 Running 0 62m 10.2.97.2 10.88.0.3 <none> <none>
my-nginx-64fc468bd4-tcskd 1/1 Running 0 62m 10.2.28.3 10.88.0.2 <none> <none>3.测试联通性
[root@k8s-master ~]# ping -c 3 10.2.28.2
PING 10.2.28.2 (10.2.28.2) 56(84) bytes of data.
64 bytes from 10.2.28.2: icmp_seq=1 ttl=63 time=0.288 ms
64 bytes from 10.2.28.2: icmp_seq=2 ttl=63 time=0.180 ms
64 bytes from 10.2.28.2: icmp_seq=3 ttl=63 time=0.192 ms
--- 10.2.28.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 0.180/0.220/0.288/0.048 ms
[root@k8s-master ~]# ping -c 3 10.2.97.2
PING 10.2.97.2 (10.2.97.2) 56(84) bytes of data.
64 bytes from 10.2.97.2: icmp_seq=1 ttl=63 time=0.307 ms
64 bytes from 10.2.97.2: icmp_seq=2 ttl=63 time=0.204 ms
64 bytes from 10.2.97.2: icmp_seq=3 ttl=63 time=0.197 ms
--- 10.2.97.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.197/0.236/0.307/0.050 ms
[root@k8s-master ~]# ping -c 3 10.2.28.3
PING 10.2.28.3 (10.2.28.3) 56(84) bytes of data.
64 bytes from 10.2.28.3: icmp_seq=1 ttl=63 time=0.317 ms
64 bytes from 10.2.28.3: icmp_seq=2 ttl=63 time=0.204 ms
64 bytes from 10.2.28.3: icmp_seq=3 ttl=63 time=0.203 ms
--- 10.2.28.3 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.203/0.241/0.317/0.054 ms4.暴露服务，创建service.
[root@k8s-master ~]# kubectl expose deployment my-nginx --port=8080 --target-port=80 --external-ip=10.88.0.3
service "my-nginx" exposed5.查看service明细。
[root@k8s-master ~]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.1.0.1 <none> 443/TCP 20h
my-nginx ClusterIP 10.1.116.155 10.88.0.3 8080/TCP 92s6.测试svc访问
[root@k8s-master ~]# curl 10.88.0.3:8080
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
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