Kubernetes怎么部署ReplicationController多副本负载均衡

这篇文章主要讲解了“Kubernetes怎么部署ReplicationController多副本负载均衡”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“Kubernetes怎么部署ReplicationController多副本负载均衡”吧！

1. 制作image

java基础image:

FROM dockerimages.yinnut.com:15043/centos:7 MAINTAINER xuelun-infra morgan.wu@yinnnut.com     ADD jdk-8u60-linux-x64.tar.gz /usr/local/ ENV JAVA_HOME /usr/local/jdk1.8.0_60 ENV PATH $JAVA_HOME/bin:$PATH

Friend-Service镜像:

FROM dockerimages.yinnut.com:15043/yinnut-java:0.1 MAINTAINER xuelun-infra morgan.wu@yinnnut.com   ADD FriendService.war / ADD jetty-runner.jar / WORKDIR / VOLUME ["/var/log"]

2. 创建Replication Controller

rc.yaml文件, 创建了2个friend的pod，设置replicas为2

apiVersion: v1 kind: ReplicationController metadata:   name: friend-service spec:   replicas: 2   template:     metadata:       labels:         yinnut-svc: "friend"         version: "0.1"     spec:       containers:       - name: friend-service         image: dockerimages.yinnut.com:15043/friend-service:0.1         ports:         - containerPort: 9999           protocol: TCP         command: ["java"]         args: ["-jar","jetty-runner.jar","--port","9999","--log","jetty.log","FriendService.war"]

##3. 创建Service## svc.yaml文件, 监听本地物理机的 127.0.0.1:30001端口

apiVersion: v1 kind: Service metadata:   name: friendsvc   labels:     yinnut-svc: friend spec:   type: NodePort   ports:   - port: 9999     protocol: TCP     targetPort: 9999     name: http     nodePort: 30001   selector:     yinnut-svc: friend

##4. 搭建Nginx反向代理## 安装：

yum install -y http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm yum install nginx -y

配置 /etc/nginx/conf.d/default.conf

server {     listen       30000;     server_name  localhost;       location / {          port_in_redirect on;          proxy_pass http://127.0.0.1:30001;          proxy_redirect  off;          proxy_set_header Host $host;          proxy_set_header X-Real-IP $remote_addr;          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;     } }

设置worker数量为10，并且把30000端口添加到防火墙例外。 访问 http://192.168.1.221:30000端口即可。

##5. 测试## 可以看到有两个Friend的Pod

[root@centos7-node-221 ~]$ kubectl get po NAME                   READY     STATUS                                                      RESTARTS   AGE busybox                1/1       Running                                                     296        12d friend-service-38riq   1/1       Running                                                     0          6h friend-service-nn0qt   1/1       Running                                                     0          11m

发送4个请求。其实我发送了上千个请求，怕这里写不下了。

[root@centos7-node-221 ~]$ for i in {1..4}; do time curl http://192.168.1.221:30000/user/1/friend; done {"rc":0,"val":[{"friendUserId":2,"friendUserName":"who","close":false}]} real 0m0.029s user 0m0.004s sys  0m0.003s {"rc":0,"val":[{"friendUserId":2,"friendUserName":"who","close":false}]} real 0m0.039s user 0m0.001s sys  0m0.004s {"rc":0,"val":[{"friendUserId":2,"friendUserName":"who","close":false}]} real 0m0.028s user 0m0.002s sys  0m0.004s {"rc":0,"val":[{"friendUserId":2,"friendUserName":"who","close":false}]} real 0m0.035s user 0m0.003s sys  0m0.002s

2个Pod分别2个Response，多副本的RR负载均衡工作的很棒。

# 第一个Pod 172.16.91.0 - - [11/Oct/2015:12:33:51 +0000] "GET //192.168.1.221/user/1/friend HTTP/1.0" 200 72 172.16.91.0 - - [11/Oct/2015:12:33:51 +0000] "GET //192.168.1.221/user/1/friend HTTP/1.0" 200 72     # 和第二个Pod   172.16.91.1 - - [11/Oct/2015:12:33:51 +0000] "GET //192.168.1.221/user/1/friend HTTP/1.0" 200 72 172.16.91.1 - - [11/Oct/2015:12:33:51 +0000] "GET //192.168.1.221/user/1/friend HTTP/1.0" 200 72

感谢各位的阅读，以上就是“Kubernetes怎么部署ReplicationController多副本负载均衡”的内容了，经过本文的学习后，相信大家对Kubernetes怎么部署ReplicationController多副本负载均衡这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是亿速云，小编将为大家推送更多相关知识点的文章，欢迎关注！