yum -y install mariadb-server mariadb
systemctl start mariadb
MySQL
select * from mysql.user\G
grant all on *.* to 'root'@'%' identified by '123456'
update mysql.user set Grant_priv='Y' where Host='%'
delete from mysql.user where Host<>'%' or User<>'root'
quit
systemctl restart mariadb
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