第七章 完成kubernetes集群部署并验证
在其中一运算个节点上操作就行
创建nginx资源配置清单的yaml文件
[root@hdss7-21 ~]# vim /opt/kubernetes/conf/nginx-ds.yaml
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
name: nginx-ds
spec:
template:
metadata:
labels:
app: nginx-ds
spec:
containers:
- name: my-nginx
image: harbor.od.com/public/nginx:v1.7.9
ports:
- containerPort: 80
创建nginx资源
[root@hdss7-21 ~]# kubectl create -f /opt/kubernetes/conf/nginx-ds.yaml
daemonset.extensions/nginx-ds created
查看pod
[root@hdss7-21 ~]# kubectl get pods
NAME READY STATUS RESTARTS AGE
nginx-ds-4ln28 1/1 Running 0 38s
nginx-ds-spdgm 1/1 Running 0 38s
[root@hdss7-21 ~]# kubectl get pods -owide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
nginx-ds-4ln28 1/1 Running 0 56s 172.7.22.2 hdss7-22.host.com <none> <none>
nginx-ds-spdgm 1/1 Running 0 56s 172.7.21.2 hdss7-21.host.com <none> <none>
在21主机上和22主机上只能访问自己创建的容器主机
例如,在21上访问172.7.21.2可以正常访问
[root@hdss7-21 ~]# curl 172.7.21.2
<!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>
访问172.7.22.2(宿主机在10.4.7.22上)却无法连接
[root@hdss7-21 ~]# curl 172.7.22.2
^C
原因是我们利用docker跨宿主机还不能通信,后面介绍的flannel可以解决跨主机通信问题