Port Bandwidth showing 0Mb/s

[carlosocha]

Hello,

I'm having issues regarding using Network Switch /Router Wizard on all netowrk devices i tried. The Nagios version i use is 5.6.1. The SNMP Configuration seems to be OK. I Can do a SNMP Get and throws data. But when i check the service on Nagios appear the following text and all ports:

/usr/local/nagios/libexec/check_rrdtraf -f /var/lib/mrtg/192.168.20.1_52.rrd -w 500.0,500.0 -c 800.0,800.0 -l M
OK - Current BW in: 0Mbps Out: 0Mbps|in=0Mb/s;500.0;800.0 out=0Mb/s;500.0;800.0

I tried the workaorund on the following link with no luck:

https://support.nagios.com/kb/article.php?id=29

Please, Could you give me some help with this problem?

[cdienger]

Can you provide us with a copy of /var/lib/mrtg/192.168.20.1_52.rrd ? This will help us identify if the problem is related to getting information into the database or getting it out.

[carlosocha]

Hello,

Thank you for your respnse and sorry for the delay i was not notified about this reply.

Please find attached the rrd file.

Thanks and regards,
Carlos

[cdienger]

The rrd file is empty except for a single entry for today - did it start working today? Do you have a mrtg cron job at /etc/cron.d/mrtg ? It should contain:

Code: Select all

*/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

Do you see any errors in /var/log/cron regarding this job?

[carlosocha]

HI,

The cronjob is already on the file you said. Also the log doesnt show any error.

I checked changind the SNMP version 2c and the graphs are working well. Do you know if there is an issue with the SNMP version 3?

Thanks and regards,
Carlos

[cdienger]

I'm not aware of any current problems but previous versions of the wizard did. I've attached a current version here that you can import under Admin > System Extensions > Manage Config Wizards the system is behind. Try removing the current bandwidth checks and the config for this device under /etc/mrtg/conf.d and running the wizard again with SNMP v3.

[carlosocha]

Hello,

I had installed the 2.4.3 version. Now I install the 2.5.0 and the snmp v3 isn't working.

Thanks and regards,

[npolovenko]

@carlosocha, Please open the /etc/cron.d/mrtg cron file and delete --user=nagios --group=nagios at the end, so the cron will look like this:

Code: Select all

*/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

Then run:

service crond restart

Wait 15 minutes and let me know if the service check starts working.