通过资源方式创建一个haproxy的pos进行负载均衡
编写yaml文件
nginx
[root@master ~]# mkdir haproxy
[root@master ~]# cd haproxy/
[root@master haproxy]#
[root@master haproxy]# cat nginx.yml
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: nginx1
name: nginx1
spec:
replicas: 1
selector:
matchLabels:
app: nginx1
template:
metadata:
labels:
app: nginx1
spec:
containers:
- image: 3199560936/nginx:v0.1
name: nginx1
---
apiVersion: v1
kind: Service
metadata:
name: nginx1
spec:
ports:
- port: 80
targetPort: 80
selector:
app: nginx1
[root@master haproxy]#
创建成功
[root@master haproxy]# kubectl create -f nginx.yml
deployment.apps/nginx1 created
service/nginx1 created
[root@master haproxy]#
查看是否创建成功
[root@master haproxy]# kubectl get deploy,pod,svc
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/httpd2 1/1 1 1 9m14s
deployment.apps/nginx1 1/1 1 1 79s
NAME READY STATUS RESTARTS AGE
pod/httpd2-fd86fb676-mtcch 1/1 Running 0 9m14s
pod/nginx1-7dc8479b8f-vqlxz 1/1 Running 0 79s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/httpd2 ClusterIP 10.106.56.19 <none> 80/TCP 9m14s
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 2d12h
service/nginx1 ClusterIP 10.96.149.182 <none> 80/TCP 79s
[root@master haproxy]#
httpd
编写yml文件
[root@master haproxy]# cat httpd.yml
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: httpd2
name: httpd2
spec:
replicas: 1
selector:
matchLabels:
app: httpd2
template:
metadata:
labels:
app: httpd2
spec:
containers:
- image: 3199560936/httpd:v0.4
name: httpd2
---
apiVersion: v1
kind: Service
metadata:
name: httpd2
spec:
ports:
- port: 80
targetPort: 80
selector:
app: httpd2
[root@master haproxy]#
创建
[root@master haproxy]# kubectl create -f httpd.yml
deployment.apps/httpd1 created
service/httpd1 created
[root@master haproxy]#
查看
[root@master haproxy]# kubectl get deploy,pod,svc
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/httpd2 1/1 1 1 9m14s
deployment.apps/nginx1 1/1 1 1 79s
NAME READY STATUS RESTARTS AGE
pod/httpd2-fd86fb676-mtcch 1/1 Running 0 9m14s
pod/nginx1-7dc8479b8f-vqlxz 1/1 Running 0 79s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/httpd2 ClusterIP 10.106.56.19 <none> 80/TCP 9m14s
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 2d12h
service/nginx1 ClusterIP 10.96.149.182 <none> 80/TCP 79s
[root@master haproxy]#
haproxy
编写yml文件
service/haproxy created
[root@master haproxy]# cat haproxy.yml
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: haproxy
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: haproxy
template:
metadata:
labels:
app: haproxy
spec:
containers:
- image: 3199560936/haproxy:v0.2
imagePullPolicy: Always
env:
- name: RS
value: "10.106.56.19 10.96.149.182"
name: haproxy
ports:
- containerPort: 80
hostPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: haproxy
namespace: default
spec:
ports:
- port: 80
protocol: TCP
targetPort: 80
selector:
app: haproxy
type: NodePort
[root@master haproxy]#
创建
[root@master haproxy]# kubectl create -f haproxy.yml
deployment.apps/haproxy created
service/haproxy created
查看
[root@master haproxy]# kubectl get deploy,pod,svc
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/haproxy 1/1 1 1 117s
deployment.apps/httpd2 1/1 1 1 44m
deployment.apps/nginx1 1/1 1 1 36m
NAME READY STATUS RESTARTS AGE
pod/haproxy-74f8f5c6cf-cmvqz 1/1 Running 0 117s
pod/httpd2-fd86fb676-mtcch 1/1 Running 0 44m
pod/nginx1-7dc8479b8f-vqlxz 1/1 Running 0 36m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/haproxy NodePort 10.101.9.205 <none> 80:30982/TCP 117s
service/httpd2 ClusterIP 10.106.56.19 <none> 80/TCP 44m
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 2d12h
service/nginx1 ClusterIP 10.96.149.182 <none> 80/TCP 36m
[root@master haproxy]#
测试
[root@master haproxy]# curl 192.168.100.169:30982
<html><body><h1>It works!</h1></body></html>
[root@master haproxy]# curl 192.168.100.169:30982
<!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>