Nagios Support Forum

Posted: **Thu Sep 23, 2021 2:59 pm**

Hello @Dusan.Mandic

To follow up, we want to increase the ulimit on open files.

Let's check the system:

cat /proc/sys/fs/file-max

We want this value to be; 1000000

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vi /etc/sysctl.conf

and specify the maximum number of open files permitted by increasing or adding

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fs.file-max = 1000000

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vi /etc/security/limits.conf

Increase or add the following:

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#open files
* soft nofile 1000000
* hard nofile 1000000
#max user processes
* hard nproc 65535
* soft nproc 65535
#stack size
* hard stack 20480
* soft stack 20480

* indicates for all users

These changes require a server reboot, so you will want to get that scheduled.

Please let us know how things look.

Thanks,
Perry

Posted: **Wed Sep 29, 2021 1:32 pm**

Hello Perry, it seems that the load has settled in the 4's and I haven't seen random service check timeouts in a while. I think that we can close this one out

Posted: **Wed Sep 29, 2021 1:44 pm**

Excellent, that is good to hear I will go ahead and lock it.

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