Docker容器里部署Apache+PHP+MariaDB+phpMyAdmin

前面讲到了创建MariaDB，这次在前面的基础上搭建phpMyAdmin服务，以便友好的管理数据库MariaDB。MariaDB的docker独立出来，这样方便管理，易于扩展。这次我们基于Dockerfile方式创建剩余的服务，Dockerfile也是官方推荐的创建镜像方法。

在上一节中我们知道数据库的用户名是root，密码是123456，但是我们还缺少数据库的ip地址，我们使用如下方法获取docker实例的ip地址，是172.17.0.3

[root@test01 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2e78c466919e liuxin/centos-mariadb:v1 "/root/run.sh" 11 hours ago Up 3 hours 0.0.0.0:13306->3306/tcp dreamy_bell
[root@test01 ~]# docker inspect --format '{{ .NetworkSettings.IPAddress }}' 2e78c466919e
172.17.0.3
[root@test01 ~]#

[root@test01 ~]# mkdir phpMyAdmin_dockerfile && cd phpMyAdmin_dockerfile
[root@test01 phpMyAdmin_dockerfile]# ls
config.inc.php Dockerfile httpd_init.sh phptest.php run.sh

内容如下。具体每行的意思已经添加到注释中了

[root@test01 phpMyAdmin_dockerfile]# cat Dockerfile ##使用的基础镜像
FROM centos:7.4.1708#添加作者信息
MAINTAINER liuxin 842887233@qq.com#工作目录
WORKDIR /root/#安装httpd和php，并忽略错误
RUN yum -y install httpd
RUN yum -y install php#安装mariadb客户端和php-mysqlnd
RUN yum -y install mariadb
RUN yum -y install php-mysqlnd
RUN yum -y install php-mbstring#安装phpmyadmin
RUN yum -y install epel-release
RUN yum -y install phpmyadmin#设置环境变量，便于管理
ENV MARIADB_ADDR 172.17.0.3
ENV MARIADB_PORT 3306
ENV MARIADB_USER root
ENV MARIADB_PASS 123456#让容器支持中文
ENV LC_ALL en_US.UTF-8#配置phpmyadmin
#ADD phpMyAdmin.conf /etc/httpd/conf.d/phpMyAdmin.conf
ADD config.inc.php /etc/phpMyAdmin/config.inc.php
RUN chown root:apache /etc/phpMyAdmin/config.inc.php
RUN chmod 640 /etc/phpMyAdmin/config.inc.php#添加php测试界面
ADD phptest.php /var/www/html/phptest.php#初始化httpd服务
ADD httpd_init.sh /root/httpd_init.sh
RUN chmod 775 /root/httpd_init.sh
RUN /root/httpd_init.sh#导出端口
EXPOSE 80#添加启动文件
ADD run.sh /root/run.sh
RUN chmod 775 /root/run.sh#设置默认启动命令
CMD ["/root/run.sh"]

这里我直接将写好的配置文件上传，然后修改文件权限。也可以通过脚本来配置，不过比较麻烦，不如这个简单。改动的配置如下

设置phpmyadmin的登录密码

$cfg['blowfish_secret'] = '123456'; /* YOU MUST FILL IN THIS FOR COOKIE AUTH! */
设置连接数据库的账号、密码、ip和端口$cfg['Servers'][$i]['host'] = '172.17.0.3'; // MySQL hostname or IP address
$cfg['Servers'][$i]['port'] = ''; // MySQL port - leave blank for default port
$cfg['Servers'][$i]['user'] = 'root'; // MySQL user
$cfg['Servers'][$i]['password'] = '123456'; // MySQL password (only needed

[root@test01 phpMyAdmin_dockerfile]# cat httpd_init.sh
#!/bin/shsed -i 's/#ServerName www.example.com:80/ServerName localhost:80/g' /etc/httpd/conf/httpd.conf
sed -i '/Require ip/d' /etc/httpd/conf.d/phpMyAdmin.conf
sed -i '//a Require all granted' /etc/httpd/conf.d/phpMyAdmin.conf

[root@test01 phpMyAdmin_dockerfile]# cat phptest.php
< ?php
phpinfo();
?>

[root@test01 phpMyAdmin_dockerfile]# cat run.sh
#!/bin/shhttpd
while true;do sleep 1000;done

[root@test01 phpMyAdmin_dockerfile]# docker build -t liuxin/centos-phpmyadmin:v1 ./
Sending build context to Docker daemon 14.34 kB
Step 1 : FROM centos:7.4.1708
---> 3afd47092a0e
.
.
省略...
.
.
Step 26 : CMD /root/run.sh
---> Using cache
---> 19e52b9aceab
Successfully built 19e52b9aceab
[root@test01 phpMyAdmin_dockerfile]#

映射，物理机端口8080到容器的80端口

[root@test01 phpMyAdmin_dockerfile]# docker run -d -p 8080:80 liuxin/centos-phpmyadmin:v1 /root/run.sh
a5a54528879ea95e9bf98a7ba3fbf6236b26f3a54a5305738a4ee770164f105b
[root@test01 phpMyAdmin_dockerfile]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a5a54528879e liuxin/centos-phpmyadmin:v1 "/root/run.sh" 56 seconds ago Up 54 seconds 0.0.0.0:8080->80/tcp sick_ride
2e78c466919e liuxin/centos-mariadb:v1 "/root/run.sh" 12 hours ago Up 4 hours 0.0.0.0:13306->3306/tcp dreamy_bell
[root@test01 phpMyAdmin_dockerfile]#