How to install mariaDB under centos

1. Install mariadb-server 

yum install mariadb-server

2. Installation related environment 

yum install mariadb-embedded mariadb-libs mariadb-bench mariadb mariadb-sever

 3. Install mariadb

yum install mariadb

 4. Start mariadb

systemctl start mariadb

 5. Set boot up

systemctl enable mariadb 

6. Configure the database (mainly to set the password)

mysql_secure_installation

7. Set the encoding

①Add the following content under the /etc/my.cnf file:

init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake

②Add the following content under the [client] tag of the /etc/my.cnf.d/client.cnf file:

default-character-set=utf8

③Add the following content under the [mysql] tag in the /etc/my.cnf.d/mysql-clients.cnf file:

default-character-set=utf8

④Restart mariadb, the command is as follows:

systemctl restart mariadb

⑤Check mariadb to check the character set, the sentence is as follows:

show variables like "%character%";show variables like "%collation%";

8. Allow remote connection to mariadb database

①Turn off the firewall, the command is as follows:

systemctl stop firewalld

② Modify the host in the user table as follows (execute in sequence):

select host, user from user;

update user set host='%' where host='centos.portal';

flush privileges;

systemctl restart mariadb