docker实践之docker-compose部署mysql
前面用golang写了一个api server,但是要用到一些测试数据,又要方便给别人,想来用docker部署环境最简单了。只需要简单执行两个命令就可以搞定了。博主的环境是windows然后在windows里面部署一个centos7的虚拟机。在虚拟机里面安装部署了docker。
1、安装部署docker
在linux下面只需简单的一个命令:
yum install docker
其他的系统类似。
2、编写docker-compose文件
version: '2'
services:
mysql:
network_mode: "bridge"
environment:
MYSQL_ROOT_PASSWORD: "yourpassword"
MYSQL_USER: 'test'
MYSQL_PASS: 'yourpassword'
image: "mysql:5.5"
restart: always
volumes:
- "./db:/var/lib/mysql"
- "./conf/my.cnf:/etc/my.cnf"
- "./init:/docker-entrypoint-initdb.d/"
ports:
- "3306:3306"
这里稍微解释一下,其中,network_mode为容器的网络模式,一般自己测试用bridge模式就可以了。MYSQL_ROOT_PASSWORD为数据库的密码,也就是root用户的密码。MYSQL_USER和MYSQL_PASS另外一个用户名和密码。image为你拉取镜像的地址和版本,当然也可以换成自己的镜像仓库,这里使用官方的。volumes里面的参数为映射本地和docker容器里面的文件夹和目录。./db 用来存放了数据库表文件,./conf/my.cnf存放自定义的配置文件,./init存放初始化的脚本。ports 为映射主机和容器的端口。写好docker-compose.yml后把相应的文件夹建好,当然也可以换成你自己的。下面的是博主的文件夹结构。
root@localhost mysql # tree
.
├── conf
│ └── my.cnf
├── db
├── docker-compose.yml
└── init
└── init.sql
3、编写配置文件和初始化文件
root@localhost conf # cat my.cnf
[mysqld]
user=mysql
default-storage-engine=INNODB
character-set-server=utf8
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
这里的配置文件只是一个简单的举例,大家需要根据自己的配置来更改。
root@localhost init # cat init.sql
use mysql;
create database test;
use test;
create table user
(
id int auto_increment primary key,
username varchar(64) unique not null,
email varchar(120) unique not null,
password_hash varchar(128) not null,
avatar varchar(128) not null
);
insert into user values(1, "zhangsan","test12345@qq.com","passwd","avaterpath");
insert into user values(2, "lisi","12345test@qq.com","passwd","avaterpath");
4、启动数据库
root@localhost mysql # docker-compose pull
.......下载镜像过程
root@localhost mysql # docker-compose up -d
mysql_mysql_1_234be9b015e4 is up-to-date
root@localhost mysql #
此处需要在存放docker-compose.yml的文件夹进行操作。
5、检查初始化的数据
root@localhost mysql # docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
cffe8d56f222 docker.io/mysql:latest "docker-entrypoint..." 21 minutes ago Up 21 minutes mysql_mysql_1_234be9b015e4
root@localhost mysql # docker exec -it cffe8d56f222 bash
root@localhost:/# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 11
Server version: 8.0.13 MySQL Community Server - GPL
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> use test;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select * from user;
+----+----------+------------------+---------------+------------+
| id | username | email | password_hash | avatar |
+----+----------+------------------+---------------+------------+
| 1 | zhangsan | test12345@qq.com | passwd | avaterpath |
| 2 | lisi | 12345test@qq.com | passwd | avaterpath |
+----+----------+------------------+---------------+------------+
2 rows in set (0.00 sec)
可以看到数据存入到数据库当中去。
6、验证远程连接
在windows宿主机上面也可以用Navicat连接上数据库。ip填虚拟机的ip,port填写3306,密码为docker-compose文件中的root密码。此处需要将宿主机(我是liunx虚拟机)的防火墙给关掉,要不然一直连接不上,或者你开启3306端口给外面访问也可以。
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