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

$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
";

$dbh = null;

} catch (PDOException $e) {

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

}

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