MySQL启动停止命令
启动服务
bin/mysqld_safe --user=hadoop &mysql停止服务
bin/mysqladmin -uroot -p shutdown登陆mysql：
bin/mysql -uroot -p123456 -h172.31.50.11MySQL启动停止命令
https://www.hechunyu.com/archives/mysqlqi-dong-ting-zhi-ming-ling
bin/mysqld_safe --user=hadoop &bin/mysqladmin -uroot -p shutdownbin/mysql -uroot -p123456 -h172.31.50.11