一.搭建nginx+php

1.站点配置文件

1.1创建nginx-configmap.yaml

[root@master k8s]# cat nginx-configmap.yamlapiVersion: v1kind: ConfigMapmetadata: name: nginx-configdata: 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

#kubectl create -f nginx-configmap.yaml

2.nginx

2.1创建nginx-deployment.yaml

[root@master k8s]# cat nginx-deployment.yamlapiVersion: v1kind: Servicemetadata: name: nginx-servicespec: type: NodePort selector: app: nginx ports: - protocol: TCP port: 80 targetPort: 80---apiVersion: extensions/v1beta1kind: Deploymentmetadata: name: nginx-deploymentspec: 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

#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

[root@master k8s]# cat php-deployment.yamlapiVersion: v1kind: Servicemetadata: name: php-servicespec: clusterIP: 10.254.235.214 selector: app: php ports: - name: php port: 9000 targetPort: 9000---apiVersion: extensions/v1beta1kind: Deploymentmetadata: name: php-deploymentspec: 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

#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

[root@master]# cat mysql-service.yamlapiVersion: v1kind: Servicemetadata: name: mysql-service namespace: defaultspec: 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

[root@master]# cat mysql-endpoint.yamlapiVersion: v1kind: Endpointsmetadata: name: mysql-service namespace: defaultsubsets:- 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:

[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)

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

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

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

应该输出连接成功