Nagios Support Forum

Posted: **Thu Feb 03, 2022 10:38 am**

We we add a new device to Nagios. the rrd file is coming up missing /var/lib/mrtg/device.rrd is missing. I can add it manually and then give it the correct permissions and ownership and then the message goes away. Also those files are gathering data - they don't show data in CLI and aren't showing data in the GUI graph. Can you help me understand why these aren't being created when we add a new device? and then why they don't pull data.

Posted: **Thu Feb 03, 2022 5:38 pm**

Hello @acentek

Thanks for reaching out and would like to start off by taking a look at your Nagios XI System Profile so we can see what is going on. Please reference which '/var/lib/mrtg/device'.

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 send via Private Message

Thanks,
Perry

Posted: **Thu Feb 03, 2022 5:46 pm**

System Profile sent with info on a device.

Thank you.

Posted: **Fri Feb 04, 2022 3:57 pm**

Hello @acentek

Follow up, send PM with further instructions,
Perry

Posted: **Thu Feb 17, 2022 4:11 pm**

Hello @acentek

Thanks for pinging me and sending over the System Profile. Want to make some adjustments based on what we see.

Edit this file:

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/etc/httpd/conf.d/php.conf

Change this specific part (around line 46):

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<IfModule !mod_php5.c>
  <IfModule !mod_php7.c>
    # Enable http authorization headers
    SetEnvIfNoCase ^Authorization$ "(.+)" HTTP_AUTHORIZATION=$1

    <FilesMatch \.(php|phar)$>
        SetHandler "proxy:unix:/run/php-fpm/www.sock|fcgi://localhost"
    </FilesMatch>
  </IfModule>
</IfModule>

Add this:

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    Timeout 600
    RequestReadTimeout header=600,minrate=50
    RequestReadTimeout body=600,minrate=50
    <Proxy "unix:/run/php-fpm/www.sock|fcgi://localhost">
        ProxySet timeout=600
    </Proxy>

So it looks like this:

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<IfModule !mod_php5.c>
  <IfModule !mod_php7.c>
    # Enable http authorization headers
    SetEnvIfNoCase ^Authorization$ "(.+)" HTTP_AUTHORIZATION=$1

    Timeout 600
    RequestReadTimeout header=600,minrate=50
    RequestReadTimeout body=600,minrate=50
    <Proxy "unix:/run/php-fpm/www.sock|fcgi://localhost">
        ProxySet timeout=600
    </Proxy>

    <FilesMatch \.(php|phar)$>
        SetHandler "proxy:unix:/run/php-fpm/www.sock|fcgi://localhost"
    </FilesMatch>
  </IfModule>
</IfModule>

Then edit this file:

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/etc/php-fpm.d/www.conf

Set:

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pm.max_requests = 50

Then restart apache/php-fpm:

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systemctl restart httpd php-fpm

Because you're getting things like:

NPCD: WARN: MAX load reached: load 12.800000

in your /usr/local/nagios/var/npcd.log...

Increase the following values in these files:

/usr/local/nagios/etc/pnp/process_perfdata.cfg:
TIMEOUT = 15

/usr/local/nagios/etc/pnp/npcd.cfg:
sleep_time = 10

Try a timeout of 30 and a sleep time of 15 and see if that improves things.

Then do:

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systemctl restart npcd

In looking over MRTG, want to find out if cron is functioning, every 5 minutes will run the following: /etc/cron.d/mrtg:*/5 * * * * root LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg --lock-file /var/lib/mrtg/mrtg.lock --confcache-file /var/lib/mrtg/mrtg.ok --user=nagios --group=nagios

verify crond:

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systemctl status crond

status:

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journalctl status crond

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LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg -debug=cfg,base,log &> /tmp/mrtg.txt
LANG=C LC_ALL=C /usr/bin/mrtg &>> /tmp/mrtg.txt
LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg --lock-file /var/lib/mrtg/mrtg.lock --confcache-file /var/lib/mrtg/mrtg.ok --user=nagios --group=nagios &>> /tmp/mrtg.txt
{ time LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg 2>1 ; } 2>> /tmp/mrtg.txt

Please zip up the '/tmp/mrtg.txt' and send that over when you get a chance.

Thanks,
Perry

Posted: **Fri Feb 18, 2022 8:50 am**

I ran through your suggestions without issue. I have sent a PM with the mrtg.zip as requested.

Thanks

Posted: **Mon Feb 21, 2022 5:38 pm**

Hello @acentek

Thanks for following up, want to take a look at the Web console for a service check with performance data and get a screenshot.

Home => Service Status => Some Service with Perfdata
Performance Tab
perfdatagui.png

[/list]

Thanks,
Perry

Posted: **Tue Feb 22, 2022 9:23 am**

Here is a screenshot of a service status - performance graph

Posted: **Tue Feb 22, 2022 8:59 pm**

With that we should see Performance Data in Service Status => Select snmp service check => Advanced Tab:

snmp_service_check.png

Do you see the Performance Data list in the box?

Here we see that it is plotting:

snmp_graph.png

Let me know what you see,
Perry

Posted: **Wed Feb 23, 2022 9:36 am**

I'm seeing nothing being logged in the GUI. Also I have attached a screenshot from the /var/lib/mrtg directory of the rrd files that should match that host and there is no data there either.

The only hunch I have at this point is the rrd files are being created with the IP address in the file name instead of the hostname of the device? Should that naming match? And if so how would I match it because those rrd files automatically come up in Nagios upon device creation. The original problem is that those rrd files are not being automatically created, i have been have to create them manually based on the error message that comes up in the Nagios GUI.

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