在kubernetes集群中部署php应用

本文将介绍在kubernetes环境中部署一套php应用系统。前端web采用nginx、中间件php以fastcgi的方式运行，后台数据库由mysql主从提供支撑。
各服务组件之间的调用采用dns解析服务名的方式进行，数据和配置文件持久化采用pv和pvc（基于nfs）。

一、通过dockerfile创建php镜像文件

# cat dockerfile 
FROM docker.io/openshift/base-centos7:latest
MAINTAINER ylw "ylw@fjhb.cn"
RUN yum makecache
RUN yum -y install php-fpm php php-gd php-mysql php-mbstring php-xml php-mcrypt  php-imap php-odbc php-pear php-xmlrpc  
RUN sed -i 's/listen = 127.0.0.1:9000/listen = 0.0.0.0:9000/' /etc/php-fpm.d/www.conf
RUN sed -i 's/listen.allowed_clients = 127.0.0.1/;listen.allowed_clients = 127.0.0.1/' /etc/php-fpm.d/www.conf

EXPOSE 9000
CMD ["/sbin/php-fpm"]

# docker build -t registry.fjhb.cn/php:0.1 .
# docker push registry.fjhb.cn/php:0.1

二、通过yaml文件创建ReplicationController和service

# cat php-rc.yaml 
apiVersion: v1
kind: ReplicationController
metadata:
  name: php-server
  labels:
    name: php-server
spec:
  replicas: 2
  selector:
    name: php-server
  template:
    metadata:
      labels: 
       name: php-server
    spec:
      containers:
      - name: php-server
        image: registry.fjhb.cn/php:0.1
        volumeMounts:
        - mountPath: /usr/share/nginx/html
          name: nginx-data
        ports:
        - containerPort: 9000
      volumes:
      - name: nginx-data
        persistentVolumeClaim:
         claimName: nfs-data

# cat php-svc.yaml   
apiVersion: v1
kind: Service
metadata:
  name: php-server 
  labels: 
   name: php-server
spec:
  ports:
  - port: 9000
    protocol: TCP
    targetPort: 9000
  selector:
name: php-server

# kubectl create -f php-rc.yaml 
# kubectl create -f php-svc.yaml 

三、修改nginx配置支持php

# cat /home/nginx/conf.d/test.conf 
server {
        listen       80;
        server_name  test.fjhb.cn;
        access_log  /etc/nginx/test.fjhb.cn.accesslog  main;

        location / {
            root    /usr/share/nginx/html;
            index   index.html index.htm;
        }

   location ~ \.php$ {
            root  /usr/share/nginx/html;
            fastcgi_pass   php-server:9000;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
            include        fastcgi_params;
}

        location ~ /\.ht {
            deny  all;
        }
}

网页访问phpinfo页面测试



四、下载Discuz应用部署，测试php和mysql主从的连通性
下载地址：http://www.discuz.net/thread-3796882-1-1.html

# mkdir /home/bbs
# cd /home/bbs
# unzip Discuz_X3.3_SC_UTF8.zip 
# mv upload/* ./

通过访问网页进行部署