一.搭建nginx+php

1.站点配置文件

1.1创建nginx-configmap.yaml

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[root@master k8s]# cat nginx-configmap.yaml

apiVersion: v1

kind: ConfigMap

metadata:

    name: nginx-config

data:

    default.conf: |

        server {

            listen       80;

            server_name  localhost;

            root   /usr/share/nginx/html;

            access_log  /var/log/nginx/host_access.log;

            error_log  /var/log/nginx/host_error.log debug;

            location / {

            root   /usr/share/nginx/html;

            index  index.html index.htm index.php;

            }

            error_page   500 502 503 504  /50x.html;

            location = /50x.html {

            root   /usr/share/nginx/html;

            }

            location ~ \.php$ {

            root   /usr/share/nginx/html;

            fastcgi_pass   10.254.235.214:9000;

            fastcgi_index  index.php;

            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;

            include        fastcgi_params;

            }

            }

  

ps:
10.254.235.214: 是下文中配置的php-service服务的集群ip

1.2 应用该配置文件

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#kubectl create -f nginx-configmap.yaml

  

2.nginx

2.1创建nginx-deployment.yaml

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[root@master k8s]# cat nginx-deployment.yaml

apiVersion: v1

kind: Service

metadata:

    name: nginx-service

spec:

    type: NodePort

    selector:

        app: nginx

    ports:

        - protocol: TCP

          port: 80

          targetPort: 80

---

apiVersion: extensions/v1beta1

kind: Deployment

metadata:

    name: nginx-deployment

spec:

    selector:

        matchLabels:

            app: nginx

    template:

        metadata:

            labels:

                app: nginx

        spec:

            containers:

                - name: nginx

                  image: nginx:alpine

                  volumeMounts:

                      - name: nginx-config

                        mountPath: /etc/nginx/conf.d

                      - name: web-root

                        mountPath: /usr/share/nginx/html

            volumes:

                - name: nginx-config

                  configMap:

                      name: nginx-config

                - name: web-root

                  nfs:

                      server: 192.168.2.17

                      path: /data/nfs

  

ps:请提前搭建好nfs环境,nfs中的server为局域网ip

2.2 应用该配置文件

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#kubectl create -f nginx-configmap.yaml

ps:
因为使用了NodePort类型,现在你可以在外部通过任意节点服务器ip+端口访问到nginx服务
你可以可以通过pod上的ip来访问到nginx服务

3.php

3.1 php-deployment.yaml

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[root@master k8s]# cat php-deployment.yaml

apiVersion: v1

kind: Service

metadata:

    name: php-service

spec:

    clusterIP: 10.254.235.214

    selector:

        app: php

    ports:

        - name: php

          port: 9000

          targetPort: 9000

---

apiVersion: extensions/v1beta1

kind: Deployment

metadata:

    name: php-deployment

spec:

    replicas: 1

    selector:

        matchLabels:

            app: php

    template:

        metadata:

            labels:

                app: php

        spec:

            containers:

                - name: php

                  image: php:7.2-fpm

                  volumeMounts:

                      - name: web-root

                        mountPath: /usr/share/nginx/html

            volumes:

                - name: web-root

                  nfs:

                      server: 192.168.2.17

                      path: /data/nfs

  

3.2 应用该配置文件

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#kubectl create -f php-configmap.yaml

  

二.创建mysql服务

1.一般我们将数据库放在单独的物理服务器上或另一个集群上,我们创建一个mysql-service.yaml

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[root@master]# cat mysql-service.yaml

apiVersion: v1

kind: Service

metadata:

  name: mysql-service

  namespacedefault

spec:

  ports:

  - protocol: TCP

    port: 3306

    targetPort: 3306

 

[root@master]#kubectl create -f mysql-service.yaml

  

2.创建同名的endpoint,这样子service可以使用endpoint

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[root@master]# cat mysql-endpoint.yaml

apiVersion: v1

kind: Endpoints

metadata:

  name: mysql-service

  namespacedefault

subsets:

- addresses:

  - ip: 192.168.2.10

  ports:

  - port: 3306

    protocol: TCP

 

[root@master]#kubectl create -f mysql-endpoint.yaml

  

三.应用程序文件

1.一个简单的php程序文件:

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[root@master]#cat b.php

<?php

$dbms='mysql';

$host= getenv('MYSQL_SERVICE_SERVICE_HOST'); // 获得环境变量,对应php-service;可以进入pod容器内使用env查看

$dbName='test';

$user='test';

$pass='1983512gx';

$dsn="$dbms:host=$host;dbname=$dbName";

 

 

try {

    $dbh = new PDO($dsn, $user, $pass);

    echo "连接成功<br/>";

    $dbh = null;

catch (PDOException $e) {

    die ("Error!: " . $e->getMessage() . "<br/>");

}

  

2.运行该文件,提示

Error!: could not find driver
这是因为用到了pdo,但php-fpm2镜像并没有这个扩展

 

3.安装php-pdo扩展(更好的办法是你应该制作一个运行php环境的容器)

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kubectl exec -it php-deployment-3540934081-75sqv -- /usr/local/bin/docker-php-ext-install pdo_mysql

  

4.重启节点上对应的php 容器

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docker restart 4cf7949cfc30

ps:
实际操作中在容器内无法连同service,重启了节点的docker才可以.

 

四.访问

在任意节点上或master上访问

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#curl http://192.168.2.18:31746/b.php

应该输出连接成功

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