5.7.2 Monitoring Engine Stops reason wproc: iocache_read

[Ludwik.Warszawa]

Hello,

I'm experiencing weird things with nagios xi 5.7.2 - the monitoring engine stop - it just dies

It happens on various times (usually evenings) and monitoring engine keeps being in this state until 5:00AM

There is unusuall info in logs (many many lines).

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[1596131239] wproc: iocache_read() from Core Worker 32513 returned -1: Bad address
[1596131239] wproc: iocache_read() from Core Worker 32513 returned -1: Bad address
[1596131239] wproc: iocache_read() from Core Worker 32513 returned -1: Bad address

The watchdog nagios (other nagios watching this one does not report a thing, not anymore)

It happens since update to 5.6.14 - but sometimes there was a sigterm in log as last line - I wrote script which looks for last line content and notifies me about occurence of sigterm- but recent events are without that.

We (me and my cooworker Dariusz) migrated to 5.70 from 5.6.14 then to 5.7.1 and finally to 5.7.2 - so we are always fresh.

I've red info about solution but it is about 5.6.x not 5.7.x - any hint?

[benjaminsmith]

Hi Ludwik,

What is the total check load of the sever ( host + services )? I'd like to get a system profile, to review the logs.

To send us your system profile.
Login to the Nagios XI GUI using a web browser.
Click the "Admin" > "System Profile" Menu
Click the "Download Profile" button
Save the profile.zip file and share in a private message or upload it to the post/ticket, and then reply to this post to bring it up in the queue.

In the meantime, let's increase the number of processes allowed. Edit the /etc/security/limits.conf file and add the following to the bottom of the file.

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*   soft   nproc  262144
*   hard   nproc  262144

Save the change and reboot the server for the change to take effect, and let me know if you notice any improvement.

Reference:
How to set nproc (Hard and Soft) Values in CentOS / RHEL 5,6,7