在kubernetes集群中部署nginx+mysql+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hostPath。

一、通过dockerfile创建php镜像文件

    # cat dockerfile
    FROM docker.io/openshift/base-centos7:latest
    MAINTAINER feiyu "akwangj@126.com"
    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 php:0.1 .

二、部署php

    # cat php-deployment.yaml
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: php-server
      labels:
        name: php-server
    spec:
      replicas: 1
      selector:
        matchLabels:
          app: php-server
      template:
        metadata:
          labels:
            app: php-server
        spec:
          containers:
          - name: php-server
            image: php:0.1
            volumeMounts:
            - mountPath: /var/www/html/
              name: nginx-data
            ports:
            - containerPort: 9000
          volumes:
          - name: nginx-data
            hostPath:
             path: /root/k8s/nmp/html
    # cat php-svc.yaml   
    apiVersion: v1
    kind: Service
    metadata:
      name: php
    spec:
      ports:
      - name: php
        port: 9000
        protocol: TCP
        targetPort: 9000
      selector:
        app: php-server

kubectl apply -f php-deploy.yaml -f php-svc.yaml

三、部署nginx

    cat nginx-deploy.yaml
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: nginx-php
    spec:
      selector:
        matchLabels:
          app: nginx-php
      replicas: 1
      template:
        metadata:
          labels:
            app: nginx-php
        spec:
          containers:
          - name: nginx-php
            image: nginx:latest
            ports:
            - containerPort: 80
            volumeMounts:
            - name: nginx-data
              mountPath: /usr/share/nginx/html
            - name: nginx-conf
              mountPath: /etc/nginx/conf.d/
          volumes:
          - name: nginx-data
            hostPath:
             path: /root/k8s/nmp/html
          - name: nginx-conf
            hostPath:
             path: /root/k8s/nmp/conf
     
    cat nginx-svc.yaml
    apiVersion: v1
    kind: Service
    metadata:
      name: nginx-php
    spec:
      type: NodePort
      ports:
      - name: nginx
        port: 80
        protocol: TCP
        targetPort: 80
        nodePort: 30003
      selector:
        app: nginx-php

nginx配置文件

    # cat /root/k8s/nmp/conf/default.conf
    server {
        listen       80;
        server_name  localhost;
     
        #charset koi8-r;
        #access_log  /var/log/nginx/host.access.log  main;
     
        location / {
            root   /usr/share/nginx/html;
            index  index.html index.htm;
        }
     
        #error_page  404              /404.html;
     
        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /usr/share/nginx/html;
        }
     
        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ .php$ {
        #    proxy_pass   http://127.0.0.1;
        #}
     
        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ .php$ {
        #    root           html;
            fastcgi_pass   php:9000;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  /var/www/html/$fastcgi_script_name;
            include        fastcgi_params;
        }
     
        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /.ht {
        #    deny  all;
        #}
    }

kubectl apply -f nginx-deploy.yaml -f nginx-svc.yaml
网页访问phpinfo页面测试


四、部署mysql

    vi mysql-deployment.yaml
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: php-mysql
      labels:
        app: mysql
    spec:
      replicas: 2
      selector:
        matchLabels:
          app: mysql
      template:
        metadata:
          labels:
            app: mysql
        spec:
          containers:
          - image: mysql:5.7
            name: mysql
            env:
            - name: MYSQL_ROOT_PASSWORD
              valueFrom:
                secretKeyRef:
                #kubectl create secret generic mysql-pass --from-literal=password=Passwd123
                  name: mysql-pass
                  key: password
            ports:
            - containerPort: 3306
              name: mysql
            volumeMounts:
            - name: mysql-persistent-storage
              mountPath: /var/lib/mysql
          volumes:
          - name: mysql-persistent-storage
            persistentVolumeClaim:
              claimName: mysql-claim

    vi mysql-svc.yaml
    apiVersion: v1
    kind: Service
    metadata:
      name: mysql
      labels:
        app: mysql
    spec:
      ports:
        - port: 3306
          targetPort: 3306
      selector:
        app: mysql

mysql>  grant all privileges on *.* to 'root'@'%' identified by 'Passwd123';
Query OK, 0 rows affected, 1 warning (0.05 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.04 sec)

 

五、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

    # cd /root/k8s/nmp/html
    # unzip Discuz_X3.3_SC_UTF8.zip
    # mv upload/* ./

通过访问网页进行部署

 

数据库服务器选择这里是个坑


安装成功，正常访问


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作者：菲宇
来源：CSDN
原文：https://blog.csdn.net/bbwangj/article/details/82954187
版权声明：本文为博主原创文章，转载请附上博文链接！