[mariadb]

name = MariaDB

baseurl = http://yum.mariadb.org/10.2/centos7-amd64

gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB

gpgcheck=

yum install MariaDB-server MariaDB-client -y

systemctl start mariadb

systemctl enable mariadb

systemctl status mariadb

mysql_secure_installation

Set root password? [Y/n] Y

New password:

Re-enter new password:

Password updated successfully!

Reloading privilege tables..

 ... Success!

By default, a MariaDB installation has an anonymous user, allowing anyone

to log into MariaDB without having to have a user account created for

them.  This is intended only for testing, and to make the installation

go a bit smoother.  You should remove them before moving into a

production environment.

Remove anonymous users? [Y/n] Y

 ... Success!

Normally, root should only be allowed to connect from 'localhost'.  This

ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] Y

 ... Success!

By default, MariaDB comes with a database named 'test' that anyone can

access.  This is also intended only for testing, and should be removed

before moving into a production environment.

Remove test database and access to it? [Y/n] Y

 - Dropping test database...

 ... Success!

 - Removing privileges on test database...

 ... Success!

Reloading the privilege tables will ensure that all changes made so far

will take effect immediately.

Reload privilege tables now? [Y/n] Y

 ... Success!

Cleaning up...

All done!  If you've completed all of the above steps, your MariaDB

installation should now be secure.

Thanks for using MariaDB!

vi /etc/my.cnf.d/server.cnf

在[mysqld]下加上】

lower_case_table_names=

vi /etc/my.cnf.d/client.cnf

在[client]字段里加入

default-character-set=utf8

vi /etc/my.cnf.d/server.cnf

在[mysqld]字段里加入

character-set-server=utf8

vi /etc/my.cnf.d/client.cnf

在[client]字段修改

port=

vi /etc/my.cnf.d/server.cnf

在[mysqld]字段里加入

port=

vi /etc/my.cnf.d/server.cnf

[mysqld] 下面增加下面配置：

max_connections=

查看最大连接数

show variables like '%max_connections%';

vi /etc/my.cnf.d/server.cnf

[mysqld] 下面增加下面配置：

max_allowed_packet=16M

systemctl restart mariadb