Resolved apache going down with event

[agaitan]

Server operating system version

Almalinux 8

Plesk version and microupdate number

18.0.54

[Tue Jul 18 09:03:08.206899 2023] [mpm_event:error] [pid 80515:tid 140403841104192] AH00484: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting

im getting this

my conf
01-cgi.conf



# This configuration file loads a CGI module appropriate to the MPM
# which has been configured in 00-mpm.conf. mod_cgid should be used
# with a threaded MPM; mod_cgi with the prefork MPM.

<IfModule mpm_worker_module>
LoadModule cgid_module modules/mod_cgid.so
</IfModule>
<IfModule mpm_event_module>
LoadModule cgid_module modules/mod_cgid.so
MaxRequestWorkers 600
ServerLimit 26
</IfModule>
<IfModule mpm_prefork_module>
LoadModule cgi_module modules/mod_cgi.so
</IfModule>

 

[agaitan]

i tried prefork also , but doesnt work, same error

 

[agaitan]

[mpm_event:error] [pid 69713:tid 139944054524224] AH00484: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting

 

[Kaspar]

The error is pretty self explanatory, but you'll find some information to remedy the issue here: https://support.plesk.com/hc/en-us/...rver-server-reached-MaxRequestWorkers-setting

 

[agaitan]

i already done that, even tried this


<IfModule mpm_worker_module>
LoadModule cgid_module modules/mod_cgid.so
</IfModule>
<IfModule mpm_event_module>
LoadModule cgid_module modules/mod_cgid.so
MaxRequestWorkers 800
ServerLimit 800
</IfModule>
<IfModule mpm_prefork_module>
LoadModule cgi_module modules/mod_cgi.so
MaxRequestWorkers 800
ServerLimit 800
</IfModule>

but still same error
] [mpm_prefork:error] [pid 105954] AH00161: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting
and im using MPM mode as PREFORK for apache, maybe a website is doing that? how i can know that, as i have almost 1000 domains in server and i never had that issue before

 

[Kaspar]

Whats the output of # httpd -V | grep MPM?

 

[agaitan]

[root@panel httpd]# httpd -V | grep MPM
Server MPM: prefork

and conf

# This configuration file loads a CGI module appropriate to the MPM
# which has been configured in 00-mpm.conf. mod_cgid should be used
# with a threaded MPM; mod_cgi with the prefork MPM.

<IfModule mpm_worker_module>
LoadModule cgid_module modules/mod_cgid.so
</IfModule>
<IfModule mpm_event_module>
LoadModule cgid_module modules/mod_cgid.so
MaxRequestWorkers 400
ServerLimit 16
</IfModule>
<IfModule mpm_prefork_module>
LoadModule cgi_module modules/mod_cgi.so
MaxRequestWorkers 400
ServerLimit 400
</IfModule>

 

[Kaspar]

I assume you restarted apache after modifying the config file?

If so, I am not really sure why the modified values don't solve the error. But here are some toughs that might help you:

1) It's unlikely, but I just to be sure you could search trough the conf directory to see if the MaxRequestWorkers settings isn't present in another another file also. Run grep -rnw '/etc/httpd/conf.modules.d/' -e 'MaxRequestWorkers' to search to all files in the /etc/httpd/conf.modules.d/ directory.

2) If that doesn't yield any result then you might have to play around with the MaxRequestWorkers value. Trying higher values, but also try lower values. See if that helps.

 

[agaitan]

I assume you restarted apache after modifying the config file?

If so, I am not really sure why the modified values don't solve the error. But here are some toughs that might help you:

1) It's unlikely, but I just to be sure you could search trough the conf directory to see if the MaxRequestWorkers settings isn't present in another another file also. Run grep -rnw '/etc/httpd/conf.modules.d/' -e 'MaxRequestWorkers' to search to all files in the /etc/httpd/conf.modules.d/ directory.

2) If that doesn't yield any result then you might have to play around with the MaxRequestWorkers value. Trying higher values, but also try lower values. See if that helps.

what i did was restarted all vmware esxi server and for now it works, also i had to disable php 7.4 and upgrade some websites