Hello Jim and thanks for your answer! I have double checked the files in /tmp created by the script and they are all owned by nagios group and nagios user, so fully writeable. The actual check interval of the port is 20 seconds ( I check every 2 units and the time unit is 10 seconds in the nagios.cfg). The correct value for the plugin time is in this case 20s? I will give it a try with making the normal check interval and retry interval at the same value. Cheers! Von: Jim Avery <jim@jimavery.me.uk> An: Nagios Users List <nagios-users@lists.sourceforge.net> Datum: 09/04/2011 01:27 PM Betreff: Re: [Nagios-users] check_snmp_int - No usable data on file <hr noshade> <tt>> Hello, > > I am using check_snmp_plugin to monitor a couple of switches. The command > template I use is: > > $USER1$/check_snmp_int.pl -H $HOSTADDRESS$ -C $USER5$ -2 -r -n $ARG1$ -fY > -kqB -g -w $ARG2$ -c $ARG3$ -d $ARG4$ > > And the particular one for a certain port/device is: > > # Monitor bandwidth and port status - port 23 > define service{ > use generic-service ; Inherit > values from a template > Host_name switch1 > Service_description Port 23. > Check_command > check_snmp_int!"GigabitEthernet0/23"!600000,600000,100,100,100000,10!800000,800000,200,200,200000,20!11 > Normal_check_interval 2 ; Check the service > every 2 units under normal conditions > retry_check_interval<-->1 ; Re-check the service > every one unit until its final/hard state is determined > } > > > The interval length in nagios.cfg is set to: > > interval_length=10 > > Can you please let me know a good value for the -d parameter in order to > tweak the check_snmp_int.pl script properly? I believe that with check_interval of 2 minutes, you need -d 120. With the plugin working in this way, you need to set your retry_interval to be the same as your check_interval, otherwise the -d value won't be correct for the interval when the check starts retrying! Note that in Nagios 3, the syntax "normal_check_interval" and "retry_check_interval" is deprecated. The equivalent directives are now simply "check_interval" and "retry_interval". See: </tt><a href=http://nagios.sourceforge.net/docs/nagioscore/3/en/objectdefinitions.html#service><tt>http://nagios.sourceforge.net/docs/nagioscore/3/en/objectdefinitions.html#service</tt></a><tt> If you are still having problems with the "No usable data on file" error, make sure the files created by the plugin are writeable by the user 'nagios' (if I recall they are under /tmp or maybe /var/tmp - I don't have my nagios system to hand to check for sure). If you have been testing the plugin from the command line while logged in as another user, it's quite likely the files will have the wrong ownership/permissions in which case you can simply delete them to let nagios recreate them next time it runs the plugin. ------------------------------------------------------------------------------ Special Offer -- Download ArcSight Logger for FREE! Finally, a world-class log management solution at an even better price-free! And you'll get a free "Love Thy Logs" t-shirt when you download Logger. Secure your free ArcSight Logger TODAY! </tt><a href=http://p.sf.net/sfu/arcsisghtdev2dev><tt>http://p.sf.net/sfu/arcsisghtdev2dev</tt></a><tt> _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net </tt><a href="https://lists.sourceforge.net/lists/listinfo/nagios-users"><tt>https://lists.sourceforge.net/lists/listinfo/nagios-users</tt></a><tt> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </tt>