Centos7 安裝Mysql

yum install mariadb*
啓動systemctl start mariadb
停止systemctl stop mariadb
重啓systemctl restart mariadb
開機啓動systemctl enable mariadb
啓動失敗：
查看已安裝包ps -ef|grep mysql
查看依賴情況sudo yum search mariadb
yum install mariadb-server
缺少依賴，安裝時要帶*
進入mysql -u root -p
修改密碼SET password for ‘root’@‘localhost’=password(‘a123456’);
退出exit;