I have a Linux Ubuntu server having Apache2 that runs PHP. All of a sudden my website gets error:
404 Not Found: The requested URL / was not found on this server
I tried:
sudo service apache2 status
Result:
Apache2 is running (pid 1546)
So I tried:
cat /proc/1546/status
Result:
State: S(sleeping)
Apache error.log file:
[Fri Jul 24 05:22:46 2015] [error] [client 155.124.123.161] File does not exist: /etc/apache2/htdocs
My question is, is this maybe the reason why my Apache server is not working properly that I get Not Found error? Is Sleep state of Apache a problem and what should I do about it? My website codes is in path /var/www/mywebapplication. It is working for a very long time but suddenly it gets error.
Thank you very much.