【原创】CentOS8安装MySQL服务器

查找系统中mysql残余

find / -name mysql

接下来把找到的都删除掉

rm  -rf /var/lib/selinux/targeted/active/modules/100/mysql
rm -rf /usr/share/selinux/targeted/default/active/modules/100/mysql

检查Mysql安装包

yum search mysql

安装

yum install -y mysql-server

设置Mysql服务自动启动

systemctl enable mysqld
systemctl start mysqld

检查服务器状态

[root@078SeatDB ~]# systemctl status mysqld
● mysqld.service - MySQL 8.0 database server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2023-06-07 10:13:00 CST; 45min ago
  Process: 1394 ExecStartPost=/usr/libexec/mysql-check-upgrade (code=exited, status=0/SUCCESS)
  Process: 1113 ExecStartPre=/usr/libexec/mysql-prepare-db-dir mysqld.service (code=exited, status=0/SUCCESS)
  Process: 1062 ExecStartPre=/usr/libexec/mysql-check-socket (code=exited, status=0/SUCCESS)
 Main PID: 1150 (mysqld)
   Status: "Server is operational"
    Tasks: 38 (limit: 24726)
   Memory: 456.7M
   CGroup: /system.slice/mysqld.service
           └─1150 /usr/libexec/mysqld --basedir=/usr

Jun 07 10:12:57 078SeatDB systemd[1]: Starting MySQL 8.0 database server...
Jun 07 10:13:00 078SeatDB systemd[1]: Started MySQL 8.0 database server.

登录数据库（默认无密码）

mysql

修改root密码

ALTER USER 'root'@'localhost' IDENTIFIED BY 'aBC12345!';
exit

再次登录数据库

 mysql -u root -paBC12345!
 exit

添加用户

create user zmrbak identified by '1234';

为用户创建数据库，授权

create database libVisits;
grant all privileges on libVisits.* to 'zmrbak'@'%' ;
grant select on mysql.* to 'zmrbak'@'%' ;
flush privileges;

修改用户密码

alter user 'zmrbak'@'%' IDENTIFIED by 'ABC23456'

设置防火墙

firewall-cmd --zone=public --add-port=3306/tcp --permanent
firewall-cmd --reload

接下来，就可以远程通过zmrbak来访问这个Mysql数据库了。