Notification with 2 command

[Dan Hopkins]

On Wed, 2006-10-11 at 14:20 +0200, Nicola Paltani wrote:
> Hi list
> 
> I'm checking a big number of printers with my nagios server (more then 
> 300) , in detail i'm checking the toner level through snmp , what i need 
> is to send a notification via mail when the toner is law but this 
> message it must contain the model of the printers form which I get the 
> error , so i have made this notification command
> 
> snmpwalk -v 1 -c public -Ov $HOSTADDRESS$ 
> HOST-RESOURCES-MIB::hrDeviceDescr.1 > 
> /usr/local/nagios/libexec/printername |
> 
> mail -s "** $NOTIFICATIONTYPE$ alert - $HOSTALIAS$/$SERVICEDESC$ is 
> $SERVICESTATE$ **" < /usr/local/nagios/libexec/printername $CONTACTEMAIL$
> 
> the first command create a file with the printer model and the second 
> send an email having as body the contents of the file
> 
> but unluckely it doesn't work , i have discovered that the “ | ” create 
> some problem , with this command i receive an empty body it ignore the 
> file (printername) generated, but if i divide the command in 2 separate 
> and associate all of them to a specific user it works
> 
> command 1 (to create a file containing the printer model
> 
> snmpwalk -v 1 -c public -Ov $HOSTADDRESS$ 
> HOST-RESOURCES-MIB::hrDeviceDescr.1 > /usr/local/nagios/libexec/printername
> 
> command 2 (send an email which have as body the contents of printername)
> 
> mail -s "** $NOTIFICATIONTYPE$ alert - $HOSTALIAS$/$SERVICEDESC$ is 
> $SERVICESTATE$ **" < /usr/local/nagios/libexec/printername $CONTACTEMAIL$
> 
> The problem that i have is that it execute first the command 2 and than 
> number 1 (i always receive the printer model of the previuos signaling), 
> i have tried to change the name of the 2 command place a sleep in front 
> of the 2nd command but with no results
> 
> how i can merge the 2 command or at least tell nagios to execute first 
> command 1 and then 2


Why not just create a plugin that queries both the toner level and the
printer name and includes the name in the plugin output?

Dan



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