check_users_cacti_nagios

This script provides the number of shell users logged into the target machine. Should work with many flavors of Linux and UNIX.

This script requires:

1) Change the username to match the one you use for Nagios/Cacti data collection. 2) ssh key set up from the Nagios/Cacti server to the desired user on the remote machine 3) If the user that connects to the remote machine is different from the one that Nagios/Cacti run under, then you need something like this in sudoers:

cacti   ALL=NOPASSWD: /bin/su - *

In Nagios command.cfg:

define command{
       command_name    check_users
       command_line    $USER1$/check_users_cacti_nagios.sh $HOSTADDRESS$ $ARG1$ $ARG2$ nagios
       }

In Nagios services.cfg

define service{
       use                             service_1_min      
       host_name                       remotehost1,remotehost2
       service_description             users
       check_command                   check_users!40!50
       max_check_attempts              7
       contact_groups                  admins
       }

Info on importing into Cacti