1. 在docker仓库中搜索mysql的镜像

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    docker search mysql

  2. 下载镜像

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    docker pull mysql

  3. 启动

    • 参数 -p 设置端口，–name 取名 ，-e MYSQL_ROOT_PASSWORD=123456 设置 账号为 root ，密码为 123456 ，-d 表示作为一个守护进程在后台运行

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      docker run -p 3306:3306 --name JY_mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql

  4. 宿主机连接docker中的mysql

    • 错误的连接方式

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      $ mysql -u root -p
Enter password: 
ERROR 2002 (HY000): Can't connect to local MySQL server through socket 
'/var/run/mysqld/mysqld.sock' (2)
# 可以看出这样会报错

    • 正确的连接方式

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      $ mysql -h 127.0.0.1 -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.7.26 MySQL Community Server (GPL)

Copyright (c) 2000, 2019, 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>

  5. 在docker容器中连接宿主机中的mysql

    • 查看宿主机和docker之间的桥接ip

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      $ ifconfig
docker0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        inet6 fe80::42:8aff:febc:8533  prefixlen 64  scopeid 0x20<link>
        ether 02:42:8a:bc:85:33  txqueuelen 0  (以太网)
        RX packets 4779  bytes 11624681 (11.6 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 6006  bytes 441594 (441.5 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

# 宿主机在与容器同一局域网的IP地址一般是docker0对应的IP地址段的首个地址
即（172.17.0.1 ）

    • 在容器中连接宿主机的mysql

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      $ mysql -h 172.17.0.1 -u root -p