centos7下安装mysql会遇到的问题集合
1.mysqld_safe提示 command not found 解决方法
https://blog.csdn.net/lampqiu/article/details/79138961
2.Mysql启动报错:See "systemctl status mysqld.service" and "journalctl -xe" for details.
https://blog.csdn.net/m0_37671301/article/details/829336