check_mrtgtraf: Unable to open MRTG log file

[gazy007]

I am sorry if there is a solution already and I missed it but I tried everything and I could not get it working.


http://support.nagios.com/forum/viewtop ... 23&p=78499
http://support.nagios.com/forum/viewtop ... f=7&t=8606

I think MRTG is working as I can see only one graph here but error in nagios Core Version 4.0.8.
http://192.168.3.2/mrtg/index.html

Permissions are as follows

-rwxr-xr-x 1 nagios nagios 110343 Oct 2 14:50 /usr/local/nagios/libexec/check_mrtgtraf
ls -la /etc/mrtg/
drwxr-xr-x. 2 root root 4096 Oct 2 15:27 .
drwxr-xr-x. 120 root root 12288 Oct 2 13:53 ..
-rw-r--r-- 1 root root 0 Oct 2 10:36 mrtg_252.cfg_l
-rw-r--r-- 1 root root 25078 Oct 2 12:04 mrtg2.cfg
-rw-r--r-- 1 nagios nagios 25078 Oct 2 15:30 mrtg.cfg
-rw-r--r-- 1 root root 0 Oct 2 13:48 mrtg.cfg_l
-rw-r--r--. 1 root root 45727 Sep 29 10:53 mrtg.cfg.rpmsave
-rw-r--r--. 1 root root 0 Oct 2 10:53 mrtg.ok
-rw-r--r-- 1 root root 25094 Oct 2 15:16 mymrtg.cfg
-rw-r--r-- 1 root root 0 Sep 29 11:10 mymrtg.ok

[root@nagios tmp]# ls -lad /etc/mrtg/
drwxr-xr-x. 2 root root 4096 Oct 2 15:27 /etc/mrtg/

I have spent over a week on it. FYI I am just a beginner on Linux but I can find my way around thanks to all your help.

[slansing]

Can you show us the cron that you currently have set up? Can you also manually run the command that you have in that cron and show us the output?

[gazy007]

Here is the output:

[root@nagios ~]# */5 * * * * /usr/bin/env LANG=C /usr/bin/mrtg /etc/mrtg/mymrtg.cfg –logging /var/log/mrtg.log
-bash: */5: No such file or directory
[root@nagios ~]# */5 * * * * /usr/bin/env LANG=C /usr/bin/mrtg /etc/httpd/conf/mrtg.cfg --logging /var/log/mrtg.log
-bash: */5: No such file or directory
[root@nagios ~]#

[gazy007]

This morning I changed my service def as well to
define service{
use generic-service
host_name Master
service_description Port 1 Bandwidth Usage
check_command check_local_mrtgtraf!/var/www/mrtg/192.168.3.40_1.log!AVG!1000000,2000000!5000000,5000000!10
}
and restarted nagios service. Now I get MRTG data has expired (5619 minutes old) .

[gazy007]

Sorry it has gone back to same error
check_mrtgtraf: Unable to open MRTG log file

[slansing]

You can't run that command as it is posted in the crontab, you need to run it as a typical linux command:

Code: Select all

/usr/bin/env LANG=C /usr/bin/mrtg /etc/mrtg/mymrtg.cfg –logging /var/log/mrtg.log

[gazy007]

Hi,
Just run it or copy it in cron?

[tmcdonald]

You need to run the command that slansing posted from the command line, and post the output.

[gazy007]

I have run the command and I did not see any output
[root@nagios ~]# /usr/bin/env LANG=C /usr/bin/mrtg /etc/mrtg/mymrtg.cfg –logging /var/log/mrtg.log
[root@nagios ~]#

[slansing]

What is the output of:

Code: Select all

ls -la /var/log/mrtg.log

I'm curious to see both the permissions, as well as the size and last update time.