Nagios Support Forum

Good afternoon everyone,

I'm Diego, I've just installed Nagios on my RedHat 6.4 Virtual Machine (on VMware Workstation) to monitor my corp switches. I also installed mrtg for monitoring ports. The thing is that when I click on a SW, it shows me 2 errors:

- For Port 1 Bandwidth Usage: check_mrtgtraf: Unable to open MRTG log file.
- For Port 1 Link Status and Uptime: Plugin timed out while executing system call.

I have tried thousands of things on forums or youtube, but it keeps showing me these errors. Please, can an internship guy get some help? THANK YOU!

Please send the output of these commands:

Here they go

Is that what you were asking for? lol I'm not so good at RHEL to be honest :/

You use MRTG to create the files in /var/lib/mrtg which creates the MRTG log, since it doesn't look like you have anything setup to do that there are no MRTG log files (or RRD files) in /var/lib/mrtg.

You will need to configure MRTG to scan your devices to create those, see here:
And here:

I did install MRTG and stuff, but as I saw no good configuration about it, I hashed the changes I did on those files..

I will try again with that second link you sent, thank you very much

Please keep us posted!