<div class="gmail_quote">On Thu, May 7, 2009 at 5:15 PM, Mike Saldivar <<a href="mailto:mike.saldivar@advocatecreditrepair.com">mike.saldivar@advocatecreditrepair.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi there, I have a new installation of Nagios, Version 3.0.6, running on Ubuntu 8.10. I followed the Quick Start guide for Ubuntu, and everything went swimmingly, installing Nagios, the Plug-ins, Apache, et al. Nagios started up and monitored itself, and following the quick-starts for Linux and Windows, I've been able to get it to monitor all my hosts. So I'm now trying to get it to monitor a Cisco ASA 5510 VPN. On the ASA, I enabled SNMP, and pointed it to the Nagios machine for reporting. On the Nagios box, I copied up the switch.cfg, changed the IP address and hostname, etc, following the instructions: <a href="http://nagios.sourceforge.net/docs/3_0/monitoring-routers.html" target="_blank">http://nagios.sourceforge.net/docs/3_0/monitoring-routers.html</a> Restarting, I see these errors such as this. Posting the error, then the corresponding portion of the switch.cfg: Inside Interface CRITICAL 05-07-2009 16:54:07 0d 2h 53m 31s 3/3 (Return code of 127 is out of bounds - plugin may be missing) </blockquote></div> Ah ha, I've discovered that check_snmp was not installed with the rest of the Nagios plugins. Apparently, if net-snmp and net-snmp-utils are not already installed, the plugins installer skips installing that plugin. Here's a configure of check_snmp 1.4, freshly downloaded from Nagios Exchange: root@dfslit1:~/check_snmp-1.4# ./configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for gawk... no checking for mawk... mawk checking whether make sets $(MAKE)... yes checking for gcc... gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ANSI C... none needed checking for style of include used by make... GNU checking dependency style of gcc... gcc3 checking whether gcc and cc understand -c and -o together... yes checking for net-snmp-config... /usr/bin/net-snmp-config checking for init_snmp in -lnetsnmp... no configure: error: snmp library not found I looked through the Ubuntu package website, and tried installing any package I could find that's related to SNMP, but already have them all installed. snmp is already the newest version. libsnmp-base is already the newest version. libsnmp15 is already the newest version. snmpd is already the newest version. libsnmp-perl is already the newest version. Is there an inherent incompatibility between Ubuntu 8.10 and the check_snmp plugin? Do I need to go the all Perl/CPAN route? I can perform snmpwalks, but I don't know of any other way to find out what I'm missing. nagios@dfslit1:~$ snmpwalk -v1 -c public 10.5.1.2 system SNMPv2-MIB::sysDescr.0 = STRING: Cisco Adaptive Security Appliance Version 7.0(4) SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.9.1.669 [...] Thanks, -Mike