Forgot root password of MySQL

1.Start mysql with skip grant tables

2.On another terminal


Some tips about iptables

1.Avoid syn attack Limited syn request speed:(specify the speed of yours)

Or limit max syn connetions of single IP:

2.Avoid the connetions of an IP Specify the co …

Solution of iptables.service: Unit not found

When use service iptables save | start | restart, it comes out: Failed to start iptables.service: Unit not found. Solution install iptables-services:

Enable service: [crayon-5b4f885d284ea676200765/ …