The service “httpd” appears to be down.

[ziadmm0]

Every couple of minutes, I get a message from cPanel on my E-mail, tells me that
The service “httpd” appears to be down.

Can you please tell me what is the problem? And how can I fix it ?

 

[LucasRolff]

Can be two reasons - either httpd is actually down, or localhost that does the check is blocked by the web server and preventing doing the check.

If it's actually down, you have to check the logs why it stops working, if it's not down, then you have to check whether the server IP or 127.0.0.1 (or ::1 on v6) is somehow blocked.

 

[ganesankittan]

Hello,

Is the httpd service actually down?

For more details, check the recent output of /var/log/chkservd.log and /var/log/apache2/error_log.

 

[ziadmm0]

Thank you very much all for the help,
I think I've solved this problem in two steps:

1- allow 127.0.0.1 in iptables:
iptables -I INPUT -s 127.0.0.1 -j ACCEPT
iptables -I OUTPUT -s 127.0.0.1 -j ACCEPT

2- Increase Extra CPUs for server load from 0 to 8
in WHM » Home » Server Configuration » Tweak Settings

One of this steps solves the problem.
Thank you.

 

[cPanelMichael]

Hello

Whitelisting the 127.0.0.1 (localhost) IP address should not be necessary. You may find the following tutorial helpful if the server load is high at the time of the failure:

Tutorial - Troubleshooting high server loads on Linux servers

Technical support analysts often receive tickets about high server loads. The cause of high server loads is very rarely attributed to defects in the cPanel software or the applications it installs. High server loads are something that should be...

forums.cpanel.net

Thank you.