downtime for two days over the weekend, start the network today, there is a very strange problem.
first of all, the server can be accessed normally, the server can also provide services normally, and the server cannot access its own public IP. I used curl to access the domain name, but there was no response. Their own servers can not access their own servers, other servers can. The ping public IP, cannot be ping on the server, and the private network is fine.
sort out the logic:
ping
ping
ping who has encountered this problem, the website can not log in now, it is very urgent!