Why might nginx and httpd fail to start at startup?

Question

Nginx

There is a server on centos 7 with nginx+httpd. After the reboot, nginx and httpd do not automatically start, but if you start them manually, they start normally. They are added to the autorun. What is the reason to look for? In the logs:

[emerg] 417#417: bind() to server_ip:80 failed (99: Cannot assign requested address)

Answer 1

If there are no startup errors in the logs, then you added them to the wrong autorun.
chkconfig --list what shows in terms of nginx and httpd?

Answer 2

In centos 7, you need to do this - "systemctl enable nginx, systemctl enable httpd", then autorun will work.

Answer 3

emerg] 417#417: bind() to server_ip:80
nginx and apache are bound to port 80 by default, if you didn't define them then that's the problem
in general here is a good site for centos 7