docker compose 安装Mysql

第一步：首先安装docker 和docker-compose

这里使用快速安装脚本进行安装

curl -sSL https://get.daocloud.io/docker | sh

第二步：新建/data/mysql目录    data文件是我以后存放所有安装的容器地址

新建一个docker-compose.yml文件夹 

version: '3'
services:
  mysql:
    image: mysql:5.7
    restart: always
    container_name: mysql
    environment:
      MYSQL_ROOT_PASSWORD: chen
    command:
      --default-authentication-plugin=mysql_native_password
      --character-set-server=utf8mb4
      --collation-server=utf8mb4_general_ci
      --explicit_defaults_for_timestamp=true
      --lower_case_table_names=1
      --max_allowed_packet=128M;
    ports:
      - 3306:3306
    volumes:
      - /data/mysql:/var/lib/mysql
      - /etc/localtime:/etc/localtime:ro
~                                        

默认数据库是账号是root

密码自己修改  MYSQL_ROOT_PASSWORD

进入到docker compose文件的目录下面   命令启动mysql 使用 docker compose up -d  (启动容器命令，一定要在需要启动容器目录下面去执行这个命令 都在他会把这个目录下面所有的容器都会启动)

-d 代表后台运行

问题：

这里可能会遇到没有权限的情况

[root@localhost ~]# docker compose up -d
-bash: /usr/local/bin/docker-compose: 权限不够

解决方法

chmod +x /usr/local/bin/docker-compose

执行后等待安装完成

[root@localhost ~]# docker-compose up -d
Pulling mysql (mysql:5.7)...
5.7: Pulling from library/mysql
e048d0a38742: Pull complete
c7847c8a41cb: Pull complete
351a550f260d: Pull complete
8ce196d9d34f: Pull complete
17febb6f2030: Pull complete
d4e426841fb4: Pull complete
fda41038b9f8: Pull complete
f47aac56b41b: Pull complete
a4a90c369737: Pull complete
97091252395b: Pull complete
84fac29d61e9: Pull complete
Digest: sha256:8cf035b14977b26f4a47d98e85949a7dd35e641f88fc24aa4b466b36beecf9d6
Status: Downloaded newer image for mysql:5.7
Creating mysql ... done

使用docker命令看一下mysql容器是否已经启动 docker ps 

[root@localhost ~]# docker ps
CONTAINER ID   IMAGE       COMMAND                   CREATED         STATUS         PORTS                                                  NAMES
3023aafe6fff   mysql:5.7   "docker-entrypoint.s…"   4 seconds ago   Up 2 seconds   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060/tcp   mysql

如果要打命令我们可以进入容器内

docker exec -it 容器名 /bin/bash

bash-4.2# mysql -u root -pchen
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.41 MySQL Community Server (GPL)

Copyright (c) 2000, 2023, Oracle and/or its affiliates.

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

到这里我们就成功的使用docker compose安装了mysql

在windows下我们也是可以正常连接到mysql的

如果在外部连接不上可以关闭下防火墙

systemctl stop firewalld