[root@iZwz97bu0gr8vwt8tjijoed local]# docker run -p 3306:3306 --name mysql > -v /usr/local/docker/mysql/logs:/var/log/mysql > -v /usr/local/docker/mysql/data:/var/lib/mysql > -v /usr/local/docker/mysql/conf/my.cnf:/etc/mysql/mysql.conf.d/mysqld.cnf > -e MYSQL_ROOT_PASSWORD=123456 > -d mysql:5.7
参数说明：
-p 3306:3306：将容器的3306端口映射到主机的3306端口
-v /usr/local/docker/mysql/logs:/var/log/mysql：将日志文件夹挂载到主机
-v /usr/local/docker/mysql/data:/var/lib/mysql：将配置文件夹挂载到主机
-e MYSQL_ROOT_PASSWORD=123456：初始化root用户的密码
执行运行命令后，报错了，它说有同名的实例在运行
docker: Error response from daemon: Conflict. The container name "/mysql" is already in use by container "f154e3d09563e7cc23307bd513ffc56dd3f78bc825908df95a4c59c043030bc1". You have to remove (or rename) that container to be able to reuse that name.
那就看看正在运行的实例有哪些：
[root@iZwz97bu0gr8vwt8tjijoed local]# docker ps -a ConTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES f154e3d09563 mysql:5.7 "docker-entrypoint.s…" 2 hours ago Up 2 hours 0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060/tcp mysql aaa672c11140 redis "docker-entrypoint.s…" 2 hours ago Exited (0) 2 hours ago redis 96c3bb2fb776 mysql "docker-entrypoint.s…" 4 days ago Exited (0) 2 hours ago mysql8.0 f209c67409c2 hello-world "/hello" 5 days ago Exited (0) 5 days ago inspiring_jennings [root@iZwz97bu0gr8vwt8th6su3Z local]# docker rm f154e3d09563
移除正在运行的那个实例：又报错了
[root@iZwz97bu0gr8vwt8tjijoed local]# docker rm f154e3d09563 Error response from daemon: You cannot remove a running container f154e3d09563e7cc23307bd513ffc56dd3f78bc825908df95a4c59c043030bc1. Stop the container before attempting removal or force remove
原因：不能删除一个正在运行中的容器，要先停止下来才能删除
[root@iZwz97bu0gr8vwt8tjijoed local]# docker stop f154e3d09563e7cc23307bd513ffc56dd3f78bc825908df95a4c59c043030bc1 f154e3d09563e7cc23307bd513ffc56dd3f78bc825908df95a4c59c043030bc1
现在再移除：
[root@iZwz97bu0gr8vwt8tjijoed local]# docker rm f154e3d09563 f154e3d09563
成功啦，现在执行运行命令就没问题了。
