On 28 June 2011 15:14, <radu.p...@technomatic.de> wrote: > I have tried the SNMP plugin a few minutes ago and here is what I get when > running it from the command line: > > ./check_snmp_int.pl -H 192.168.2.1 -C public -n GigabitEthernet0/24 -k -w > 200,400 -c 0,600 > GigabitEthernet0/24:UP No usable data on file (1 rows) :(1 UP): UNKNOWN > > The interface name I took it from listing all available interfaces on the > switch. > > Any ideas, please?
The plugin stores the metrics in a temporary file the first time you run it. It will then use that data the next time you run it to calculate the metrics. This error shows either that the file did not exist yet, or the interval between this time the plugin is run and the last time is wrong. You therefore need to run the plugin at regular intervals (say 5 minutes). It helps if you use SNMP v2 so you can retrieve 64-bit counters (the "-2" command line option and the "-g" option). And you might also need to use the "-d" option to tell the plugin at what interval you will usually run it (for example "-d 300" for 5 minute intervals). You need the "-f" option to tell the plugin to output performance data. I normally specify "-fY" to get the output in bits/s. In Nagios you need to set the check_interval and the retry_interval both to the same 5 minutes (or whatever interval you like so long as it matches the -d parameter). Note that if you ran the plugin from the command line as an ordinary user, it may have created temporary files under /tmp which are not writeable by Nagios. When you configure this check to run in Nagios you may need to delete those temporary files so the nagios user can write them. Here is an example of the options I normally use when monitoring switch interfaces: -H 198.236.3.4 -C $USER4$ -2 -n "Nortel Ethernet Routing Switch 5510-48T Module - Unit 2 Port 5 " -fY -kqB -g -w 600000,600000,100,100,100000,10 -c 800000,800000,200,200,200000,20 -d 300 Note that $USER4$ is a macro which I specify in the resources.cfg file which holds the read-only community string. You'll find there are a couple of default templates for PNP under the templates.dist directory - check_snmp_int-bits.php and check_snmp_int.php - you will of course need your check_command definition to be named appropriately to pick up whichever of those templates you need. hth, Jim ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
