error "Too many open files" after apache update

[vapetrov]

Hello,

I used CPanel/WHM 96.0.9 on CentOS 7.
Today Apache webserver and few other rpm's was updated. From yum.log:
--
Jun 02 20:38:49 Updated: ea-apache24-2.4.48-1.1.1.cpanel.x86_64
--

After update Apache was not started. In the error log I see:
--
[Wed Jun 02 20:46:20.415917 2021] [log_config:error] [pid 27684] (24)Too many open files: AH00649: could not open transfer log file /etc/apache2/logs/domlogs/xxxxxx.com. AH00015: Unable to open logs
--

I was able to run the server when I switched on piped logs for apache. But it is not seems a real fix.

I see number of opened files limited to 4096.
--
# ulimit -n
4096
--

I see files /etc/bashrc and some other chenged today. Some ulimit directives was added.

Can someone please explain how to increase number of open files for apache?

 

[TheFaSt]

Hello

I did fix it by running the following in SSH:

mkdir /usr/lib/systemd/system/httpd.service.d
printf "[Service]\nLimitNOFILE=40000" > /usr/lib/systemd/system/httpd.service.d/limits.conf
systemctl daemon-reload
/scripts/restartsrv_httpd --hard

As instructed on How to increase the number of open files allowed for Apache on CentOS 7.

Kind regards
Werner
AlfaNet bv

 

[vapetrov]

My another server with 200+ account also failed after update.
I have investigated Cpanel docs and found solution:
--
mkdir /usr/lib/systemd/system/httpd.service.d
echo -e "[Service]\nLimitNOFILE=101000" > /usr/lib/systemd/system/httpd.service.d/limits.conf
systemctl daemon-reload
systemctl stop httpd
systemctl start httpd
--

Without this Apache fails when trying to open 1025 files.

But I would like to hear from CPanel staff why it happened?

 

[vacancy]

Please try;

yum clean all
yum -y upgrade

Unable to start httpd after 2 june ea4 update

Hello After the June 2 update, httpd cannot be started on our 4 servers. [[email protected] ~]# systemctl status httpd.service ● httpd.service - Apache web server managed by cPanel EasyApache Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled) Active...

forums.cpanel.net

 

[andrew.n]

You can also look into these 2:

Error: Too many open files

Symptoms When restarting a service, sometimes I see "Error: Too many open files". Description Each server is provided with a maximum amount of files it can open. Depending on the environment, th...

support.cpanel.net

How to increase the number of open files allowed for Apache on CentOS 7

Introduction When trying to start or stop Apache you may see errors like "Error: Too many open files" and needs to be increased. Procedure On a server using systemd to manage services do the foll...

support.cpanel.net

 

[cPRex]

@vacancy - thanks for posting that. We did revert the change overnight to fix that issue. The specific case that was reverted was EA-9784.