Nagios Monitoring Cisco Switches

Nagios Monitoring Cisco Switches

First, the environment:
1. nagios4.0.8 has been built
2.centos6.5 x86_64

Second, 4 scripts are required to monitor Cisco
Check_snmp_cisco_ifstatus
Check_snmp_cisco_loadavg
Check_snmp_cisco_memutil
Check_snmp_env
Download Link: http://down.51cto.com/data/2118262

Third, the configuration
Vim/usr/local/nagios/etc/objects/templates.cfg

define host{        name                     etnet-switch             use                      generic-host             check_period             24x7                     check_interval           1                        retry_interval           1/2                      max_check_attempts      2                        check_command            check-host-alive                 notification_period      24x7                     notification_interval   30                       notification_options     d,r                      contact_groups          admins                   register                 0                         }

Vim/usr/local/nagios/etc/objects/commands.cfg

# #check  cisco#define  check_snmp_envdefine command{command_name check_snmp_envcommand _line  $USER 1$/check_snmp_env -h  $HOSTADDRESS $ -c  $ARG 1$  $ARG 2$} #define    check_snmp  cisco memdefine command{command_name check_snmp_cisco_memcommand_ line  $USER 1$/check_snmp_cisco_memutil -h  $HOSTADDRESS $ -c  $ARG 1$ -w  $ARG 2$  -c  $ARG 3$} #define   check_snmp cisco cpudefine command{command_name  check_snmp_cisco_cpucommand_line  $USER 1$/check_snmp_cisco_loadavg -h  $HOSTADDRESS $ -c   $ARG 1$ -w  $ARG 2$ -c  $ARG 3$} #define   check_snmp cisco   ifdefine command{command_name check_snmp_cisco_ifcommand_line  $USER 1$/check_snmp_cisco_ifstatus  -H  $HOSTADDRESS $ -c  $ARG 1$ -i  $ARG 2$ -w  $ARG 3$ -c  $ARG 4$}

Vim/usr/local/nagios/etc/objects/151.3.cfg

define host{        use              etnet-switch        host_name        Office-192.168.151.3         alias           switch 151.3         address         192.168.151.3         }define service{         use                      generic-service        host_name                Office-192.168.151.3         service_description     ping         check_command           check_ping!200.0,20%! 600.0,60%        normal_check_interval   5         retry_check_interval    1         }define service{        use                       generic-service        host_name                Office-192.168.151.3         service_description     Uptime         check_command           check_snmp!-c public -o sysuptime.0         }define service{         use                      generic-service        host_name                office-192.168.151.3         service_description     port 1  Link Status        check_command            check_snmp!-c public -o ifoperstatus.1 -r 1  -m RFC1213-MIB        }define service {   use                          generic-service  host_name                    office-192.168.151.3  service_ description         memutil  check_command                check_snmp_cisco_mem!public!90! 95 }define service {  use                          generic-service   host_name                    Office-192.168.151.3  service_description          loadavg  check_command                check_snmp_cisco_cpu!public!90!95  }define service {  use                           generic-service  host_name                    Office-192.168.151.3   Service_description         environment  check_command                check_snmp_env! public  }

Add Monitoring switch
Vim/usr/local/nagios/etc/nagios.cfg

Cfg_file=/usr/local/nagios/etc/objects/151.3.cfg

Restart Nagios
/etc/init.d/nagios restart

Four, may be error

No output on stdout) Stderr:can ' t locate net/snmp.pm in @INC (@INC contains:/usr/local/lib64/perl5/usr/local/share/perl 5/usr/lib64/perl5/vendor_perl/usr/share/perl5/vendor_perl/usr/lib64/perl5/usr/share/perl5.) At/usr/local/nagios/libexec/check_snmp_env Line 21.

Question 1:
PERL-MCPAN-E Shell
Can ' t locate cpan.pm in @INC (@INC contains:/usr/local/lib64/perl5/usr/local/share/perl5/usr/lib64/perl5/vendor_perl

/usr/share/perl5/vendor_perl/usr/lib64/perl5/usr/share/perl5.).

Solve:

Yum Install-y perl-cpan*

Question 2:
No output on stdout) Stderr:can ' t locate net/snmp.pm in @INC (@INC contains:/usr/local/lib64/perl5/usr/local/share/perl 5

/usr/lib64/perl5/vendor_perl/usr/share/perl5/vendor_perl/usr/lib64/perl5/usr/share/perl5.) At

/usr/local/nagios/libexec/check_snmp_env Line 21.

Solve:

PERL-MCPAN-E shellcpan[1]> Install net::snmpcpan[2]> quit

Solutions on the Web
How do I install Net::snmp perl module? There is 2 ways of doing this
1) by CPAN
command line, as root:

[your_host]# perl-mcpan-e Shell
CPAN Shell--cpan Exploration and modules installation (v1.76)
ReadLine Support Enabled
Cpan> Install NET::SNMP

If it ' s the first time you run CPAN, it'll probably ask you some (simple) questions.
CPAN'll also ask you to satisfy some dependencies (Crypt::D es, DIGEST::MD5, etc ...).
2) "By hand"

Get the Folowings modules (tar.gz format) on www.cpan.org
-Crypt::D es
-DIGEST::MD5
-DIGEST::SHA1
-Digest::hmac
-NET::SNMP

For each one (you must install NET::SNMP at the end):
Tar zxf <module>.tar.gz
CD <module>
Perl makefile.pl
Make Test
Make install

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Nagios Monitoring Cisco Switches