Custom Plugin

[Tedman Eng]

Try adding  ;echo $?  to the end of your commandline to see what the final
exit code is.

ex:   ./lhm.sh 10.30.31.51 ; echo $?

I'm a bit rusty on the details of expect, but the 'interact' statement may
be writing output to the terminal, vs real stdout.



-----Original Message-----
From: Danny Russell [mailto:drussell at mpifix.com]
Sent: Wednesday, July 20, 2005 10:45 AM
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] Custom Plugin


I am trying to monitor a host that is behind a Cisco VPN Concentrator. For
simplicity right now I am just trying to use check_ping.
 
I have written an expect script (lhm.sh) that logs into the VPN and then
runs a check_ping command. Here is the code for lhm.sh:
     1    #!/usr/bin/expect -f
     2    set cmd_one [lindex $argv 0];
     3    log_user 0
     4    spawn vpnclient connect lhm pwd password
     5    expect "(y/n): " {send "y\r"}
     6    spawn ./check_ping -H $cmd_one -w 3000.0,80% -c 5000.0,100% -p 3
     7    interact
     8    set status [wait]
     9    #puts [lindex $status 3]
    10   exit [lindex $status 3]
 
Line #3 - disables the output to go to stdout. This hides all of the nasty
long VPN connection information.
Line #4 - connects to the VPN
Line #5 - sends a 'y' so the VPN is connected
Line #8 - gets the exit return code
Line #10 - exits with the exit return code from $status.
 
When I call './lhm.sh 10.30.31.51' this is the output:
[root at monitor plugins]# ./lhm.sh 10.30.31.51
PING OK - Packet loss = 0%, RTA = 60.68 ms
[root at monitor plugins]#
 
When I call './lhm.sh 10.30.31.51' with the puts un-commented this is the
output:
[root at monitor plugins]# ./lhm.sh 10.30.31.51
PING OK - Packet loss = 0%, RTA = 71.03 ms
0
[root at monitor plugins]#
 
When I call './lhm.sh 10.30.31.61' (A WRONG IP) with the puts un-commented
this is the output:
[root at monitor plugins]# ./lhm.sh 10.30.31.61
CRITICAL - Plugin timed out after 18 seconds
2
[root at monitor plugins]#
 
The problem is, when I create a custom check command in
/etc/Nagios/checkcommands.cfg to call /usr/lib/Nagios/plugins/lhm.sh Nagios
always reports it as up and (No output!). It even reports at UP if I give it
a wrong IP (10.30.31.61).
Host Status:  UP    
Status Information:(No output!)
 
Any ideas?
 
 
Thanks!
Danny Russell
Mobile Productivity, Inc.
drussell at mpifix.com
work-801.437.5885 mbl-801.722.5837
Enabling the World To Work
 


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