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.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
#kubectl create -f nginx-configmap.yaml
2.nginx
2.1创建nginx-deployment.yaml
[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
#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.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
#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.yaml apiVersion: v1 kind: Service metadata: name: mysql-service namespace: default 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
[root@master]# cat mysql-endpoint.yaml apiVersion: v1 kind: Endpoints metadata: name: mysql-service namespace: default 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:
[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