k8s集群PHP环境使用

国画發表於 2019-8-15 14:27:00

<h2>一、环境介绍</h2>
k8s版本: 1.15.2
存储: 阿里云NAS
测试代码: wordpress
 
<h2>二、下载wordpress和创建好数据库等</h2>
 
<h3>1、下载wordpress</h3>
<div class="cnblogs_code">
<pre>wget https://cn.wordpress.org/latest-zh_CN.zip</pre>
</div>
<h3>2、创建数据库（数据库我使用yum下载的，数据库尽量不要部署在k8s集群中）</h3>
<div class="cnblogs_code">
<pre>create database wordpress DEFAULT CHARACTER SET utf8;
grant all on wordpress.* to 'wordpress'@'%' identified by '123456';</pre>
</div>
 
<h3>3、把wordpress代码放入到NAS存储中</h3>
<div class="cnblogs_code">
<pre>mkdir /data -p
mount -t nfs -o vers=4,minorversion=0,noresvport 12XXXXXXXxx.cn-hongkong.nas.aliyuncs.com:/ /data
mv wordpress /data/</pre>
</div>
 
<h2>三、写dockerfile和构建镜像（我这自己写的nginx镜像，挂载配置或者使用secret的方法也能更改配置）</h2>
<div class="cnblogs_code">
<pre>mkdir -p Dockerfile
# cat default.conf
server {
listen 80;
server_name localhost;

location / {
 root /usr/share/nginx/html;
 indexindex.html index.htm;
}
error_page 500 502 503 504/50x.html;
location = /50x.html {
 root /usr/share/nginx/html;
}

location ~ \.php$ {
 root /var/www/html;
 fastcgi_pass php-svc.default.svc.cluster.local:9000;
 fastcgi_indexindex.php;
 fastcgi_paramSCRIPT_FILENAME$document_root$fastcgi_script_name;
 include fastcgi_params;
}

}

# cat Dockerfile
FROM nginx:1.15.4-alpine
LABEL maintainer="zhang 1232@qq.com"

COPY default.conf /etc/nginx/conf.d/
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

#构建镜像（没有镜像仓库的话，要把镜像导入到其它服务器上）
# docker build -t mynginx:2.0 ./
#查看镜像
# docker images|grep mynginx
mynginx 2.0 2fd9a2724422 2 hours ago 17.7MB</pre>
</div>
 
<h2>四、配置nginx和php</h2>
<h3>1、创建与导入php的svc和deploy</h3>
<div class="cnblogs_code">
<pre># catphp.yaml
apiVersion: v1
kind: Service
metadata:
name: php-svc
spec:
selector:
name: php
ports:
- port: 9000
name: http-php
targetPort: 9000
protocol: TCP

---
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-php-deploy
spec:
replicas: 3
selector:
matchLabels:
 name: php
template:
metadata:
 labels:
 name: php
spec:
 containers:
 - name: php
 image: php:7.2-fpm
 ports:
 - name: http-php
 containerPort: 9000
 volumeMounts:
 - name: php-code
 mountPath: /var/www/html/
 volumes:
 - name: php-code
 nfs:
 path: /wordpress/
 server: 12xxxxxxxxx.cn-hongkong.nas.aliyuncs.com</pre>
</div>
 
<h3>2、创建与导入nginx的svc和deploy</h3>
<div class="cnblogs_code">
<pre># cat nginx-deploy.yaml
apiVersion: v1
kind: Service
metadata:
name: nginx-svc
spec:
selector:
name: nginx
ports:
- port: 80
name: http
targetPort: 80
protocol: TCP

---
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-nginx-deploy
spec:
replicas: 3
selector:
matchLabels:
 name: nginx
template:
metadata:
 labels:
 name: nginx
spec:
 containers:
 - name: nginx
 image: mynginx:2.0
 imagePullPolicy: IfNotPresent
 ports:
 - name: http
 containerPort: 80
 volumeMounts:
 - name: html
 mountPath: /usr/share/nginx/html/
 volumes:
 - name: html
 nfs:
 path: /wordpress/
 server: 124xxxxxxxxxxxxx-hongkong.nas.aliyuncs.com</pre>
</div>
 
<h3>3、查看</h3>
<div class="cnblogs_code">
<pre># kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 4h15m
nginx-svc ClusterIP 10.101.81.167 <none> 80/TCP 99m
php-svc ClusterIP 10.111.89.228 <none> 9000/TCP 99m
# kubectl get deploy
NAME READY UP-TO-DATE AVAILABLE AGE
my-nginx-deploy 3/3 3 3 99m
my-php-deploy 3/3 3 3 100m</pre>
</div>
<h3>4、创建Ingress访问</h3>
<div class="cnblogs_code">
<pre># cat wordpress-ingress.yaml
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: ingress-nginx
spec:
rules:
- host: haha.zhang.com
http:
 paths:
 - backend:
 serviceName: nginx-svc
 servicePort: 80

# kubectlapply -f wordpress-ingress.yaml
ingress.extensions/ingress-nginx created</pre>
</div>
<h3>5、访问测试</h3>
<img src="https://img2018.cnblogs.com/blog/1242171/201908/1242171-20190815142705025-1727925037.png" alt="">
 
<h3> </h3>
<h2>五、PHP扩展安装</h2>
php容器中的ini扩展文件路径：/usr/local/etc/php/conf.d/
<h3>1、进入php容器中</h3>
<div class="cnblogs_code">
<pre># docker run -it--name php-gdphp:7.2-fpm bash</pre>
</div>
<h3>2、下载依赖</h3>
<div class="cnblogs_code">
<pre>apt-get update && apt-get installlibfreetype6-dev libjpeg62-turbo-dev libmcrypt-dev libpng-dev -y</pre>
</div>
<h3>3、安装扩展（例如GD）</h3>
<div class="cnblogs_code">
<pre>docker-php-ext-configure gd
#安装
docker-php-ext-install gd
#启用
docker-php-ext-enable gd</pre>
</div>
<h3>4、将容器保存为新的镜像</h3>
<div class="cnblogs_code">
<pre># docker commit -p php-gd php-gd:1.0
sha256:c562ad539630b3c5eb6888f0b7bac937d9d3af1d39de118106c5e6ca30a02ebd
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
php-gd 1.0 c562ad539630 4 seconds ago 426MB</pre>
</div>
<h3>5、运行新php容器测试</h3>
<div class="cnblogs_code">
<pre># docker run -it --rmphp-gd:1.0 bash
root@9e7fa8e57db7:/var/www/html# ls /usr/local/etc/php/conf.d/docker-php-ext-gd.ini
/usr/local/etc/php/conf.d/docker-php-ext-gd.ini
root@9e7fa8e57db7:/var/www/html# cat/usr/local/etc/php/conf.d/docker-php-ext-gd.ini
extension=gd.so

root@9e7fa8e57db7:/var/www/html# php -m|grep gd
gd</pre>
</div>
 
<h3>6、redis之类的扩展安装</h3>
<h3> </h3>
<div class="cnblogs_code">
<pre>curl -L -o redis-4.1.1.tar.gz https://github.com/phpredis/phpredis/archive/4.1.1.tar.gz
tar xf redis-4.1.1.tar.gz
rm redis-4.1.1.tar.gz
mv phpredis-4.1.1 /usr/src/php/ext/redis
docker-php-ext-configureredis
docker-php-ext-install redis
docker-php-ext-enable redis</pre>
</div>
##查看
<div class="cnblogs_code">
<pre>root@9d5d4e093dbd:/var/www/html# php -m|grep redis
redis</pre>
</div>
  
来源：https://www.cnblogs.com/zhangb8042/p/11357736.html

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k8s集群PHP环境使用