CentOS7 Docker 安装 PHP，Mysql，phpmyadmin

1、安装 Docker

官网
https://docs.docker.com/install/

找到 linux --Centos，操作步骤如下
Install Docker Engine on CentOS

直接按照他的操作步骤进行即可
抄录一下

Set up the repository

  sudo yum install -y yum-utilssudo yum-config-manager \--add-repo \https://download.docker.com/linux/centos/docker-ce.repo

Install Docker Engine

 sudo yum install docker-ce docker-ce-cli containerd.io

sudo systemctl start docker
sudo docker run hello-world

设置开机启动的话，继续

$ sudo systemctl list-unit-files |grep docker
docker.service disabled
docker.socket disabled

$ sudo systemctl enable docker

 Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

2、安装 PHP

sudo docker pull php
** latest 版本是 7.2 的，本次只处理 php5.6
sudo docker pull php:5.6-fpm

sudo docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
php                 latest              90102e6d83ad        47 hours ago        367MB
php                 5.6-fpm             3458979c7744        2 months ago        344MB
hello-world         latest              fce289e99eb9        2 months ago        1.84kBsudo docker run -p 9000:9000 --name  myphp56 -v /usr/share/nginx/html:/var/www/html -d php:5.6-fpm参数说明：--name  myphp56：将容器命名为 myphp56
-v /usr/share/nginx/html:/var/www/html ： 将宿主机的网站目录（/usr/share/nginx/html）挂载到容器的网站目录（/var/www/html）-p 9000:9000：将容器myphp72的 9000 端口映射到宿主机的 9000 端口         *** php 缺省端口是 9000 ，如果宿主机也安装过php，可能会冲突，可以改到 9001

3、测试 nginx + php

** 本次重点测试 docker 。所以， nginx 的配置直接修改 nginx.conf ，端口方式访问或域名方式网站另行配置

修改 nginx 配置，加入 php 配置
cd /etc/nginx
sudo vim nginx.conf
加入 php 文件的 location

 location ~ \.php$ {# include fastcgi.conf;# this is on local#root         /usr/share/nginx/html;# thsi is on docker,not local /var/www/htmlroot         /var/www/html;fastcgi_split_path_info ^(.+\.php)(/.+)$;#fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock; fastcgi_pass 127.0.0.1:9000;fastcgi_param SCRIPT_FILENAME$document_root$fastcgi_script_name;fastcgi_param PATH_INFO $uri;fastcgi_param SCRIPT_NAME $fastcgi_script_name;fastcgi_index index.php;include fastcgi_params;}

** centos 7 缺省的 nginx WEB 目录不在 /var/www/html ，而是 /usr/share/nginx/html
** 以上 root /var/www/html; 指的是宿主机的 /var/www/html 映射到 docker 容器伤的 WEB 目录

建立一个 index.php 文件，用于测试

 cd  /var/www/htmlsudo vim index.php<?phpphpinfo();?>

启动 docker php 容器

 docker ps -aCONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMESdd0a3155e7ee        php:5.6-fpm         "docker-php-entrypoi…"   3 days ago          Up 15 minutes       0.0.0.0:9000->9000/tcp   myphp56docker start myphp56docker ps -sCONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES               SIZEdd0a3155e7ee        php:5.6-fpm         "docker-php-entrypoi…"   3 days ago          Up 14 minutes       0.0.0.0:9000->9000/tcp   myphp56             8B (virtual 344MB)

测试一下
curl 127.0.0.1/index.php
curl 192.168.1.184/index.php
浏览器下打开网址：http://192.168.1.184/index.php

4、Docker PHP 错误处理

页面暂时找不到
The page you are looking for is temporarily unavailable. Please try again later.

docker ps -s 检查一下， docker myphp56 没有 start

找不到文件
curl 127.0.0.1/index.php
File not found.

检查 nginx.conf php 模块中 root 定义，容易犯错误的是：将宿主机的 WEB 目录和 docker 容器的目录搞混！
之前在 ubuntu 没有遇到这个问题，那里宿主机和 docker 的WEB 目录都是 /var/www/html
以下是我的 php 配置部分

  location ~ \.php$ {# include fastcgi.conf;# this is on local# root         /usr/share/nginx/html;# thsi is on docker,not local /var/www/htmlroot         /var/www/html;fastcgi_split_path_info ^(.+\.php)(/.+)$;#fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock; fastcgi_pass 127.0.0.1:9000;fastcgi_param SCRIPT_FILENAME$document_root$fastcgi_script_name;fastcgi_param PATH_INFO $uri;fastcgi_param SCRIPT_NAME $fastcgi_script_name;fastcgi_index index.php;include fastcgi_params;}

浏览器打开变成下载

 1）.重点检查  fastcgi_pass 的配置** 我这里安装的 Centos 没有 php-fpm.sock，docker 里面也没有，所以只能使用端口方式#fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock; fastcgi_pass 127.0.0.1:9000;2). Centos 7.6 的防火墙规则需要开启 Docker 映射的 9000 端口如果宿主机的 firewalld 是开启的，最好一起开放 80， 443， 9000等端口，否则，本地 curl 可能是对的，在局域网浏览器也打不开！sudo firewall-cmd --zone=public --add-port=80/tcp --permanentsudo firewall-cmd --zone=public --add-port=8080/tcp --permanentsudo firewall-cmd --zone=public --add-port=9000/tcp --permanentsudo systemctl restart firewalld.service

5、安装 Docker mysql

docker search mysql

sudo docker pull mysql
** latest 版本是 mysql 8.0，本次处理 mysql 5.7

sudo docker pull mysql:5.6
sudo docker pull mysql:5.7

sudo docker ps

REPOSITORY              TAG                 IMAGE ID            CREATED             SIZE
mysql                   5.6                 bc788a6a2745        12 days ago         256MB
mysql                   5.7                 98455b9624a9        12 days ago         372MB
mysql                   latest              7bb2586065cd        12 days ago         477MB
phpmyadmin/phpmyadmin   latest              c6ba363e7c9b        2 months ago        166MB
php                     5.6-fpm             3458979c7744        2 months ago        344MB

先使用 latest 试试

sudo docker run --name mysql -e MYSQL_ROOT_PASSWORD=123456 -p 3306:3306 -d mysqldocker inspect mysql
......"Env": ["MYSQL_ROOT_PASSWORD=123456","PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin","GOSU_VERSION=1.7","MYSQL_MAJOR=8.0","MYSQL_VERSION=8.0.15-1debian9"],......

再启动 mysql 5.7

sudo docker run --name mysql57 -v mysql57:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -p 3306:3306 -d mysql:5.7参数说明：
--name mysql57 给容器取名为 mysql57
-v mysql57:/var/lib/mysql 挂在一个volume（取名为mysql57）到容器的/var/lib/mysql
**给volume（数据卷）取名便于管理
** mysql 缺省的数据都是放在 /var/lib/mysql 的-e MYSQL_ROOT_PASSWORD=123456 设置mysql环境的root密码
-p 3306:3306 宿主机的 3306 端口（前一个3306）对应到docker 的 3306 端口（后面的 3306）

出现错误！

docker: Error response from daemon: Conflict. The container name "/mysql57" is already in use by container "7650608f3e1fc6f85614f059c9049f9259993cfcc4863cb566d504311d00df33". You have to remove (or rename) that container to be able to reuse that name.See 'docker run --help'.

** 端口冲突了！
简单处理，直接删除 mysql 8.0 容器

docker ps -s

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                               NAMES               SIZE
56605931a504        mysql               "docker-entrypoint.s…"   6 minutes ago       Up 6 minutes        0.0.0.0:3306->3306/tcp, 33060/tcp   mysql               7B (virtual 477MB)
dd0a3155e7ee        php:5.6-fpm         "docker-php-entrypoi…"   3 days ago          Up 26 minutes       0.0.0.0:9000->9000/tcp              myphp56             8B (virtual 344MB)

docker stop mysql

docker rm mysql

再次启动 mysql 5.7
docker start mysql57
** 虽然刚才因为冲突启动失败，但是 mysql57 容器已经建立，所以，直接 start 即可

查看 mysql 容器信息
sudo docker inspect mysql57

...
"Mounts": [{"Type": "volume","Name": "mysql","Source": "/var/lib/docker/volumes/mysql/_data","Destination": "/var/lib/mysql","Driver": "local","Mode": "z","RW": true,"Propagation": ""}
...
"Env": ["MYSQL_ROOT_PASSWORD=123456","PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin","GOSU_VERSION=1.7","MYSQL_MAJOR=5.7","MYSQL_VERSION=5.7.25-1debian9"],
...
"Gateway": "172.17.0.1","IPAddress": "172.17.0.3",
...

6、连接 mysql57 容器测试

宿主机上远程连接（刚才inspect 到的容器 IP= 172.17.0.3）

mysql -h172.17.0.3 -uroot -p123456

 Welcome to the MariaDB monitor.  Commands end with ; or \g.Your MySQL connection id is 3Server version: 5.7.25 MySQL Community Server (GPL)Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.MySQL [(none)]> select version();+-----------+| version() |+-----------+| 5.7.25    |+-----------+1 row in set (0.00 sec)

进入容器查看
docker exec -it mysql57 bash

root@e80eaaa17d57:/# mysql -V

mysql  Ver 14.14 Distrib 5.7.25, for Linux (x86_64) using  EditLine wrapper

容器内本地连接 mysql
mysql -uroot -p123456
…
mysql> show databases;

+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.00 sec)

7、安装 Docker phpMyAdmin

查找 phpmyadmin 镜像
sudo docker search phpmyadmin

docker pull phpmyadmin/phpmyadmin

** 提前运行前面安装的 Docker php56 和 mysql 57

sudo docker run --name phpmyadmin --link mysql57:db -p 9998:80 -d phpmyadmin/phpmyadmin
参数说明：

--name phpmyadmin 容器取名 phpmyadmin
--link mysql57:db 连接到 容器mysql ，给这个 link 一个别名为db
-p 9998:80 宿主机9998 端口对应到 phpmyadmin的 80 端口

sudo docker ps -s

CONTAINER ID        IMAGE                   COMMAND                  CREATED             STATUS              PORTS                               NAMES               SIZE
0f5599cb72a6        phpmyadmin/phpmyadmin   "/run.sh supervisord…"   15 seconds ago      Up 14 seconds       9000/tcp, 0.0.0.0:9998->80/tcp      phpmyadmin          33.7MB (virtual 200MB)
e80eaaa17d57        mysql:5.7               "docker-entrypoint.s…"   21 minutes ago      Up 21 minutes       0.0.0.0:3306->3306/tcp, 33060/tcp   mysql57             157B (virtual 372MB)
dd0a3155e7ee        php:5.6-fpm             "docker-php-entrypoi…"   3 days ago          Up 2 hours          0.0.0.0:9000->9000/tcp              myphp56             8B (virtual 344MB)

查看 phpmyadmin 容器信息
docker inspect phpmyadmin

..."Ports": {"80/tcp": [{"HostIp": "0.0.0.0","HostPort": "9998"}],"9000/tcp": null},
...
"Env": ["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin","PHPIZE_DEPS=autoconf \t\tdpkg-dev dpkg \t\tfile \t\tg++ \t\tgcc \t\tlibc-dev \t\tmake \t\tpkgconf \t\tre2c","PHP_INI_DIR=/usr/local/etc/php","PHP_EXTRA_CONFIGURE_ARGS=--enable-fpm --with-fpm-user=www-data --with-fpm-group=www-data --disable-cgi","PHP_CFLAGS=-fstack-protector-strong -fpic -fpie -O2","PHP_CPPFLAGS=-fstack-protector-strong -fpic -fpie -O2","PHP_LDFLAGS=-Wl,-O1 -Wl,--hash-style=both -pie","GPG_KEYS=1729F83938DA44E27BA0F4D3DBDB397470D12172 B1B44D8F021E4E2D6021E995DC9FF8D3EE5AF27F","PHP_VERSION=7.2.14","PHP_URL=https://secure.php.net/get/php-7.2.14.tar.xz/from/this/mirror","PHP_ASC_URL=https://secure.php.net/get/php-7.2.14.tar.xz.asc/from/this/mirror","PHP_SHA256=ee3f1cc102b073578a3c53ba4420a76da3d9f0c981c02b1664ae741ca65af84f","PHP_MD5=","VERSION=4.8.5","URL=https://files.phpmyadmin.net/phpMyAdmin/4.8.5/phpMyAdmin-4.8.5-all-languages.tar.xz"],"Gateway": "172.17.0.1","IPAddress": "172.17.0.4",...

8 、测试 Docker phpMyAdmin

docker port phpmyadmin
80/tcp -> 0.0.0.0:9998

curl 127.0.0.1:9998
curl 192.168.1.184:9998

http://192.168.1.184:9998/

登录查看 mysql

由于本次学习的虚拟机上，没有安装 php 和 mysql ，所以，以上信息一定是 Docker 容器的