Nagios Support Forum

I really like the plugin check_snmp_environment.pl! I am able to execute the plugin from the command line but have not been able to make it work in Nagios. All the comments I see on the Nagios plugins page are positive so I must be doing something simply wrong in my scripts.

I am running Nagios 3.5.0 on OpenSUSE 12.1.

I successfully executed the plugin from the command line targeting a variety of Cisco platforms. Here is the command line for 10.231.135.131.

./check_snmp_environment.pl –H 10.231.135.131 -2 –T cisco –C s2436608

Linux returns:
1 Fan OK, 1 ps OK: OK

This is how the plugin is translated in commands.cfg.

# 'check_snmp_environment' command definition
define command {
command_name check_cisco_env
command_line $USER1$/check_snmp_environment.pl -H $HOSTADDRESS$ $ARG1$
}

Here is the rest of the configuration information.

define servicegroup {
servicegroup_name MPI
alias Mail Processing Infrastructure
members 10.231.135.131, PING, 10.231.135.132, PING
}

define hostgroup {
hostgroup_name MPI_CORE_C2960G-24TC-L
alias MPI_CORE_C2960G-24TC-L
}

define host {
use generic-switch
host_name 10.231.135.131
address 10.231.135.131
alias SAJSCAMSW01
icon_image_alt SAJSCAMSW01
icon_image switch_core_mpi.png
statusmap_image switch_core_mpi.png
hostgroups MPI_CORE_C2960G-24TC-L
}

define host {
use generic-switch
host_name 10.231.135.132
address 10.231.135.132
alias SAJSCAMSW02
icon_image_alt SAJSCAMSW02
icon_image switch_core_mpi.png
statusmap_image switch_core_mpi.png
hostgroups MPI_CORE_C2960G-24TC-L
parents 10.231.135.131
}

define service {
use local-service
hostgroup_name MPI_CORE_C2960G-24TC-L
service_description PING
check_command check_ping!200.0,20%!600.0,60%
normal_check_interval 5
retry_check_interval 1
}

define service {
use local-service
hostgroup_name MPI_CORE_C2960G-24TC-L
service_description A30 - Power Supply
check_command check_snmp!-P 2c -C s2436608 -o SNMPv2-SMI::enterprises.9.9.13.1.5.1.3.1003 -c1
}

define service {
use local-service
hostgroup_name MPI_CORE_C2960G-24TC-L
service_description A20 - Fan
check_command check_snmp!-P 2c -C s2436608 -o SNMPv2-SMI::enterprises.9.9.13.1.4.1.3.1004 -c1
}

define service {
use local-service
hostgroup_name MPI_CORE_C2960G-24TC-L
service_description A45 - Environment Status
check_command check_cisco_env!-2 -T cisco -C s2436608
}


I left the services that check specific OIDs for fan and power; these are working. However I want to get check_snmp_environment.pl working as I have to check environmental status on a large number of diverse Cisco platforms and this plugin would save me a lot of time and effort.

I appreciate any help anyone is able to provide.

Thanks,

Richard Opie, Equipment Specialist
US Postal Service

If you run this command and force a check, what does the output say?

This is the contents of nagios.log as per your suggested command.

[1431694599] Warning: Check of service 'A45 - Environment Status' on host '10.231.135.131' did not exit properly!
[1431694899] Warning: Check of service 'A45 - Environment Status' on host '10.231.135.131' did not exit properly!
[1431695199] Warning: Check of service 'A45 - Environment Status' on host '10.231.135.131' did not exit properly!
[1431695499] Warning: Check of service 'A45 - Environment Status' on host '10.231.135.131' did not exit properly!
[1431695799] Warning: Check of service 'A45 - Environment Status' on host '10.231.135.131' did not exit properly!
[1431695799] SERVICE NOTIFICATION: nagiosadmin;10.231.135.131;A45 - Environment Status;CRITICAL;notify-service-by-email;(Service check did not exit properly)
[1431695830] Warning: Contact 'nagiosadmin' service notification command '/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: A45 - Environment Status\nHost: SAJSCAMSW01\nAddress: 10.231.135.131\nState: CRITICAL\n\nDate/Time: Fri May 15 06:16:39 PDT 2015\n\nAdditional Info:\n\n(Service check did not exit properly)\n" | /usr/bin/mail -s "** PROBLEM Service Alert: SAJSCAMSW01/A45 - Environment Status is CRITICAL **" nagios@localhost' timed out after 30 seconds
[1431695966] Auto-save of retention data completed successfully.
[1431696100] Warning: Check of service 'A45 - Environment Status' on host '10.231.135.131' did not exit properly!
[1431696400] Warning: Check of service 'A45 - Environment Status' on host '10.231.135.131' did not exit properly

I took the additional step of enabling debug with full verbose in nagios.cfg. This is the significant message:

[1431697780.202272] [016.0] [pid=16697] Embedded Perl failed to compile /usr/lib/nagios/plugins/check_snmp_environment.pl, compile error **ePN failed to compile /usr/lib/nagios/plugins/check_snmp_environment.pl: "Variable "$Version" will not stay shared at (eval 1) line 379," at /usr/lib/nagios/p1.pl line 160.
- skipping plugin

So the Linux-resident Perl interpreter does not find any problem with the check but the Nagios embedded interpreter fails.

What do you suggest now?

I just added '# nagios: -epn' to the plugin and that corrected the problem; thanks!