前言：在Centos8中安装mysql8.0报错:All matches were filtered out by modular filtering for argument: mysql-community-server Error: Unable to find a match: mysql-community-server本文介绍如何解决这个报错。
报错如下：
 

[root@blog.tag.gg]# sudo yum -y install mysql-community-server --enablerepo=mysql80-community --nogpgcheck
MySQL 8.0 Community Server                                                                                                       1.3 MB/s | 3.0 MB     00:02    
MySQL Connectors Community                                                                                                        55 kB/s |  59 kB     00:01    
MySQL Tools Community                                                                                                            490 kB/s | 1.0 MB     00:02    
All matches were filtered out by modular filtering for argument: mysql-community-server
Error: Unable to find a match: mysql-community-server

解决方法：方法很简单,按照如下操作即可。
1、先执行如下命令：

yum module disable mysql

2、然后在执行安装mysql的命令即可,例如我安装的是mysql8.0命令如下。（换成自己的安装命令）

sudo yum -y install mysql-community-server --enablerepo=mysql80-community --nogpgcheck

如果不是mysql8,也可以执行如下命令安装：

yum -y install mysql-community-server

最终安装完成执行命令 service mysqld restart 启动mysql即可。
查看初始的数据库root密码：

sudo grep 'temporary password' /var/log/mysqld.log