Nagios Support Forum

Posted: **Tue Dec 03, 2019 10:19 am**

Ok, fixed that and re-run checks. No errors for permissions now.
I can those rrds as being updated now.

What's left is to see what happens when we create a new router/switch .

Will keep you posted

Posted: **Tue Dec 03, 2019 10:25 am**

nms wrote:Ok, fixed that and re-run checks. No errors for permissions now.
I can those rrds as being updated now.

What's left is to see what happens when we create a new router/switch .

Will keep you posted

Sounds good.

One thing to note, earlier you said you ran this

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LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg .check

In the future, do not run that command, it will create rrd's with incorrect permissions (root). If you need to run from the command line always run

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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

Posted: **Tue Dec 03, 2019 12:35 pm**

Hi Scott,

Thanks for that tip.

Unfortunately, when I created a new switch from scratch I ended up with the same problem. Some interfaces ended up with no rrd file, while others were ok.
We experienced this also when we added an interface to an existing device.

I then searched a bit in the output for the MRTG check but there wasn't anything related to this device.
I tried to create the file by hand and giving it the same user permissions and modes (apache:nagios and 644) but the file never updated.

2019-12-03_1828.png

2019-12-03_1828_001.png

Posted: **Tue Dec 03, 2019 12:40 pm**

You cannot create the file by scratch, so you should delete them. Doing so will cause it to error for sure.

Can you go to Admin -> Manage Config Wizards
Click check for updates and see if there is an updated "Network Switch / Router" wizard.

If so install that update run the following again to fix any possible bad permissions

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chown apache:nagios -R /var/lib/mrtg
chmod ug+rwx -R /var/lib/mrtg

and then try again

Also, it is worth pointing out that it can take 10-15 minutes before that file is created after running the wizard.

Posted: **Wed Dec 04, 2019 3:27 am**

Hi,

The wizard is up to date. V 2.5.2.

Yes, the creation of the file by hand was just to test.

Also, it took longer than 15 minutes and it still remained the same.

Posted: **Wed Dec 04, 2019 7:53 am**

Can you show the output of the following

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grep 526910080 -R /etc/mrtg

Posted: **Wed Dec 04, 2019 9:13 am**

Hi,

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[root@am1-sha-nagios2-p tmp]# grep 526910080 -R /etc/mrtg
/etc/mrtg/conf.d/10.192.128.50.cfg:### Interface 526910080 >> Descr: 'Ethernet105/1/11' | Name: 'Ethernet105/1/11' | Ip: 'No Ip' | Eth: 'No Ethernet Id' ###
/etc/mrtg/conf.d/10.192.128.50.cfg:Target[10.192.128.50_526910080]: 526910080:[email protected]:161::::2
/etc/mrtg/conf.d/10.192.128.50.cfg:SetEnv[10.192.128.50_526910080]: MRTG_INT_IP="No Ip" MRTG_INT_DESCR="Ethernet105/1/11"
/etc/mrtg/conf.d/10.192.128.50.cfg:MaxBytes[10.192.128.50_526910080]: 125000000
/etc/mrtg/conf.d/10.192.128.50.cfg:Title[10.192.128.50_526910080]: Traffic Analysis for 526910080 -- am1nx01
/etc/mrtg/conf.d/10.192.128.50.cfg:PageTop[10.192.128.50_526910080]: <h1>Traffic Analysis for 526910080 -- am1nx01</h1>
/etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg:### Interface 526910080 >> Descr: 'Ethernet105/1/11' | Name: 'Ethernet105/1/11' | Ip: 'No Ip' | Eth: 'a4-56-30-c2-3f-4c' ###
/etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg:# Target[am1-sha-ucsnx01-p_o-coreinfra-Nexus_526910080]: 526910080:ASPIDER-SNMP@am1-sha-ucsnx01-p_o-coreinfra-Nexus:161::::2
/etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg:# SetEnv[am1-sha-ucsnx01-p_o-coreinfra-Nexus_526910080]: MRTG_INT_IP="No Ip" MRTG_INT_DESCR="Ethernet105/1/11"
/etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg:# MaxBytes[am1-sha-ucsnx01-p_o-coreinfra-Nexus_526910080]: 268188625000
/etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg:# Title[am1-sha-ucsnx01-p_o-coreinfra-Nexus_526910080]: Traffic Analysis for 526910080 -- am1nx01
/etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg:# PageTop[am1-sha-ucsnx01-p_o-coreinfra-Nexus_526910080]: <h1>Traffic Analysis for 526910080 -- am1nx01</h1>

Posted: **Wed Dec 04, 2019 9:21 am**

Looks like this interface is commented out in /etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg which would explain why it isn't creating the rrd

What are the permissions here

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ls -l /etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg

Posted: **Wed Dec 04, 2019 9:39 am**

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 ls -l /etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg
-rwxr-xr-x. 1 root root 249640 Nov  8 10:46 /etc/mrtg/conf.d/am1-sha-ucsnx01-p_o-coreinfra-Nexus.cfg

I saw i have quite a few with the same permissions tho.

Posted: **Wed Dec 04, 2019 9:53 am**

Ok, lets do this

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chown apache:nagios -R /etc/mrtg/conf.d/
chmod ug+rw -R /etc/mrtg/conf.d/

Then lets run the wizard again which should overwrite these configs without them having these interfaces commented out

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