mariadb安装几个问题

1. 提示与mysql8.0 冲突，卸载mysql继续安装。

2. 运行服务是提示“The unit openvpn-server@\x2a.service has entered the 'failed' state with result 'exit-code'.”        卸载openvpn继续，

3. 提示“Failed to start MariaDB 10.3 database server.” 删除目录“/var/lib/mysql/”中文件，

[root@echo network-scripts]# ls -lh  /var/lib/|grep mysql
drwxr-xr-x   2 mysql          mysql             6 Apr 19 23:52 mysql

4.systemctl start mariadb.service 启动成功

结语：与mysql冲突，与openvpn冲突。