LAMP值的Linux (操作系统)、ApacheHTTP服务器、MySQL(有时也指MariaDB,数据库软件)和PHP(有时也是指Perl或Python)的组合方案,一般很适合用来建立Web服务器环境。
① 下载LAMP镜像:
下面介绍如何使用Docker来搭建一个包含LAMP组件的容器。
[[email protected] ~]# docker search -s 10 lamp
Flag --stars has been deprecated, use --filter=stars=3 instead
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io docker.io/linode/lamp LAMP on Ubuntu 14.04.1 LTS Container 121
docker.io docker.io/tutum/lamp Out-of-the-box LAMP image (PHP+MySQL) 68
docker.io docker.io/greyltc/lamp a super secure, up-to-date and lightweight... 65 [OK]
docker.io docker.io/reinblau/lamp [Deprecated]Dockerfile for PHP-Projects wi... 28 [OK]
......
[[email protected] ~]# docker pull tutum/lamp
Using default tag: latest
Trying to pull repository docker.io/tutum/lamp ...
latest: Pulling from docker.io/tutum/lamp
8387d9ff0016: Pull complete
3b52deaaf0ed: Pull complete
4bd501fad6de: Pull complete
a3ed95caeb02: Pull complete
790f0e8363b9: Pull complete
11f87572ad81: Pull complete
341e06373981: Pull complete
709079cecfb8: Pull complete
55bf9bbb788a: Pull complete
b41f3cfd3d47: Pull complete
70789ae370c5: Pull complete
43f2fd9a6779: Pull complete
6a0b3a1558bd: Pull complete
934438c9af31: Pull complete
1cfba20318ab: Pull complete
de7f3e54c21c: Pull complete
596da16c3b16: Pull complete
e94007c4319f: Pull complete
3c013e645156: Pull complete
Digest: sha256:d332e7e97606ac6407b0ba9ae9e9383c89d7e04c6f4853332e98f7d326408329
② 使用默认方式启动LAMP容器:
利用下载的镜像启动一个容器,并映射容器的8080端口和3306端口:
[[email protected] ~]# docker run -d -p 8080:80 -p 3306:3306 tutum/lamp
ec3c2c2b04ddda0110f6488ac4c2b958e5e834613d1c637bbaba8f628c6e461e
[[email protected] ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ec3c2c2b04dd tutum/lamp "/run.sh" 4 seconds ago Up 3 seconds 0.0.0.0:3306->3306/tcp, 0.0.0.0:8080->80/tcp hungry_leavitt
使用curl命令测试,可以查看到默认的应用已经启动:
[[email protected] ~]# curl http://127.0.0.1:8080
返回的内容如下:
<html>
<head>
<title>Hello world!</title>
<style>
body {
background-color: white;
text-align: center;
padding: 50px;
font-family: "Open Sans","Helvetica Neue",Helvetica,Arial,sans-serif;
}
#logo {
margin-bottom: 40px;
}
</style>
</head>
<body>
<img id="logo" src="logo.png" />
<h1>Hello world!</h1>
<h2>MySQL Server version: 5.5.47-0ubuntu0.14.04.1</h2>
</body>
③ 部署自己的PHP应用
默认的容器启动了一个helloword应用。读者可以基于此镜像,编辑Dockerfile来创建自定义LAMP应用镜像。
在宿主主机上创建新的工作目录LAMP:
[[email protected] ~]# mkdir LAMP
[[email protected] ~]# cd LAMP
[[email protected] LAMP]# touch Dockerfile
在php目录下里面创建Dockerfile文件,内容为
[[email protected] LAMP]# vi Dockerfile
FROM tutum/lamp:latest
RUN rm -fr /app && git clone https://github.com/username/customapp.git /app
#这里将https://github.com/username/customapp.git /app替换/app里面的文件
EXPOSE 80 3306
CMD ["/run.sh"]
创建镜像,命名为dockerpool/my-lamp-app:
[[email protected] LAMP]# docker build -t dockerpool/my-lamp-app .
利用新创建镜像启动容器,注意启动时候指定-d参数,让容器后台运行:
[[email protected] LAMP]# docker run -d -p 8080:80 -p 3306:3306 dockerpool/my-lamp-app
在本地主机上使用curl看一下自己的应用程序是不是已经正确启动:
[[email protected] LAMP]# curl http://127.0.0.1:8080/
④ 在PHP程序中连接数据库
1. 在容器中访问MySQL数据库
下载的tutum/lamp镜像中的MySQL数据库已带有默认的root用户,本地连接可以不使用密码,所以在代码中访问数据库的实现非常简单:
<?php
$mysql = new mysqli("localhost", "root");
echo "MySQL Server info: ".$mysql->host_info;
?>
2. 在容器外访问MySQL数据库
默认的MySQL数据库不支持root用户远程登录,因此在容器外无法直接通过root用户访问MySQL数据库。
当第一次使用tutum/lamp镜像启动容器的时候,它会自动创建一个叫admin的MySQL用户,并生成一个随机密码,使用docker logs命令可以获取到这个密码:
[[email protected] LAMP]# docker logs ec3c2c2b04dd
=> An empty or uninitialized MySQL volume is detected in /var/lib/mysql
=> Installing MySQL ...
=> Done!
=> Waiting for confirmation of MySQL service startup
=> Creating MySQL admin user with random password
=> Done!
========================================================================
You can now connect to this MySQL Server using:
mysql -uadmin -p8fMyJd458mqd -h<host> -P<port>
Please remember to change the above password as soon as possible!
MySQL user 'root' has no password but only allows local connections
========================================================================
原文地址:http://blog.51cto.com/sf1314/2056639