安装mariadb（mysql）并创建账户

(red hat内置的安装已经是mariadb，而非mysql，因为二者差不多，所以不建议重新下载mysql，建议直接用mariadb)

安装：

[root@localhost ~]# dnf -y install mariadb*

启动：

[root@localhost ~]# systemctl start mariadb

[root@localhost ~]# systemctl status mariadb

[root@localhost ~]# firewall-cmd --permanent --add-service=mysql

[root@localhost ~]# firewall-cmd --reload

[root@localhost ~]# firewall-cmd --permanent --add-service=mariadb

Error: INVALID_SERVICE: mariadb

[root@localhost ~]# mysql_secure_installation

进入root下的mariadb（即mysql）

[root@localhost ~]# mysql -u root -p

Enter password: （这里要输入密码）

Welcome to the MariaDB monitor.  Commands end with ; or \g.

Your MariaDB connection id is 13

Server version: 10.1.26-MariaDB MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input

输入密码后进入

MariaDB [(none)]>

#------

建账户：

MariaDB [(none)]> create database menmydb;

Query OK, 1 row affected (0.02 sec)

创建密码：

MariaDB [(none)]> create user menxiaolei@localhost identified by 'men12xiao34lei56';

Query OK, 0 rows affected (0.02 sec)

给权限：

MariaDB [(none)]> grant all on menmydb.* to menxiaolei@localhost identified by 'men12xiao34lei56';

Query OK, 0 rows affected (0.02 sec)

退出

MariaDB [(none)]>

Ctrl+D

#--------------------------------------------------------

普通用户使用menmydb

[xjj@localhost ~]$ mysql -u menxiaolei -p

Enter password: （这里输入密码）

Welcome to the MariaDB monitor.  Commands end with ; or \g.

Your MariaDB connection id is 17

Server version: 10.1.26-MariaDB MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| menmydb            |

+--------------------+

2 rows in set (0.00 sec)

MariaDB [(none)]> show tables;

MariaDB [(none)]> describe servers;

Ctrl+D

Acknowledge:

[1]louxiao

[2]https://www.youtube.com/watch?v=J5CdRIpZKes