Sure, here is my minimal.cfg file . . .
This defines a timeperiod where all times are valid for checks,
notifications, etc. The classic “24x7” support nightmare. 
define timeperiod{
timeperiod_name 24x7
alias 24 Hours A Day, 7 Days A Week
sunday 00:00-24:00
monday 00:00-24:00
tuesday 00:00-24:00
wednesday 00:00-24:00
thursday 00:00-24:00
friday 00:00-24:00
saturday 00:00-24:00
}
###############################################################################
###############################################################################
COMMANDS
###############################################################################
###############################################################################
This is a sample service notification command that can be used to send email
notifications (about service alerts) to contacts.
define command{
command_name notify-by-email
command_line /usr/bin/printf “%b” “***** Nagios ***\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddre
ss: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$OUTPUT$" | /bin/mail -s " $NOTIFICATIONTYPE$ alert - $HOSTALIA
S$/$SERVICEDESC$ is $SERVICESTATE$ **” $CONTACTEMAIL$
}
This is a sample host notification command that can be used to send email
notifications (about host alerts) to contacts.
define command{
command_name host-notify-by-email
command_line /usr/bin/printf “%b” “***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HO
STADDRESS$\nInfo: $OUTPUT$\n\nDate/Time: $LONGDATETIME$\n” | /bin/mail -s “Host $HOSTSTATE$ alert for $HOSTNAME$!” $CONTACTEMAIL$
}
Command to check to see if a host is “alive” (up) by pinging it
define command{
command_name check-host-alive
command_line $USER1$/check_ping -H $HOSTADDRESS$ -w 99,99% -c 100,100% -p 1
}
Generic command to check a device by pinging it
define command{
command_name check_ping
command_line $USER1$/check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ -p 5
}
Command used to check disk space usage on local partitions
define command{
command_name check_local_disk
command_line $USER1$/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$
}
Command used to check the number of currently logged in users on the
local machine
define command{
command_name check_local_users
command_line $USER1$/check_users -w $ARG1$ -c $ARG2$
}
Command to check the number of running processing on the local machine
define command{
command_name check_local_procs
command_line $USER1$/check_procs -w $ARG1$ -c $ARG2$
}
Command to check the load on the local machine
define command{
command_name check_local_load
command_line $USER1$/check_load -w $ARG1$ -c $ARG2$
}
###############################################################################
###############################################################################
CONTACTS
###############################################################################
###############################################################################
In this simple config file, a single contact will receive all alerts.
This assumes that you have an account (or email alias) called
“nagios-admin” on the local host.
define contact{
contact_name nagios-admin
alias Nagios Admin
service_notification_period 24x7
host_notification_period 24x7
service_notification_options w,u,c,r
host_notification_options d,r
service_notification_commands notify-by-email
host_notification_commands host-notify-by-email
email nagios-admin@localhost
}
###############################################################################
###############################################################################
CONTACT GROUPS
###############################################################################
###############################################################################
We only have one contact in this simple configuration file, so there is
no need to create more than one contact group.
define contactgroup{
contactgroup_name admins
alias Nagios Administrators
members nagios-admin
}
###############################################################################
###############################################################################
HOSTS
###############################################################################
###############################################################################
Generic host definition template - This is NOT a real host, just a template!
define host{
name generic-host ; The name of this host template
notifications_enabled 1 ; Host notifications are enabled
event_handler_enabled 1 ; Host event handler is enabled
flap_detection_enabled 1 ; Flap detection is enabled
failure_prediction_enabled 1 ; Failure prediction is enabled
process_perf_data 1 ; Process performance data
retain_status_information 1 ; Retain status information across program restarts
retain_nonstatus_information 1 ; Retain non-status information across program restarts
register 0 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL HOST, JUST A TEMPLATE!
}
Since this is a simple configuration file, we only monitor one host - the
local host (this machine).
define host{
use check_ping ; Name of host template to use
host_name localhost
alias localhost
address 127.0.0.1
check_command check_ping
max_check_attempts 10
notification_interval 120
notification_period 24x7
notification_options d,r
contact_groups admins
}
###############################################################################
###############################################################################
HOST GROUPS
###############################################################################
###############################################################################
We only have one host in our simple config file, so there is no need to
create more than one hostgroup.
define hostgroup{
hostgroup_name test
alias Test Servers
members localhost
}
###############################################################################
###############################################################################
SERVICES
###############################################################################
###############################################################################
Generic service definition template - This is NOT a real service, just a template!
define service{
name generic-service ; The ‘name’ of this service template
active_checks_enabled 1 ; Active service checks are enabled
passive_checks_enabled 1 ; Passive service checks are enabled/accepted
parallelize_check 1 ; Active service checks should be parallelized (disabling this can lead to major performance problems)
obsess_over_service 1 ; We should obsess over this service (if necessary)
check_freshness 0 ; Default is to NOT check service 'freshness’
notifications_enabled 1 ; Service notifications are enabled
event_handler_enabled 1 ; Service event handler is enabled
flap_detection_enabled 1 ; Flap detection is enabled
failure_prediction_enabled 1 ; Failure prediction is enabled
process_perf_data 1 ; Process performance data
retain_status_information 1 ; Retain status information across program restarts
retain_nonstatus_information 1 ; Retain non-status information across program restarts
register 0 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL SERVICE, JUST A TEMPLATE!
}
Define a service to “ping” the local machine
define service{
use check_ping ; Name of service template to use
host_name localhost
service_description PING
is_volatile 0
check_period 24x7
max_check_attempts 4
normal_check_interval 5
retry_check_interval 1
contact_groups admins
notification_interval 960
notification_period 24x7
check_command check_ping!100.0,20%!500.0,60%
}
Define a service to check the disk space of the root partition
on the local machine. Warning if < 20% free, critical if
< 10% free space on partition.
define service{
use generic-service ; Name of service template to use
host_name localhost
service_description Root Partition
is_volatile 0
check_period 24x7
max_check_attempts 4
normal_check_interval 5
retry_check_interval 1
contact_groups admins
notification_interval 960
notification_period 24x7
check_command check_local_disk!20%!10%!/
}
Define a service to check the number of currently logged in
users on the local machine. Warning if > 20 users, critical
if > 50 users.
define service{
use generic-service ; Name of service template to use
host_name localhost
service_description Current Users
is_volatile 0
check_period 24x7
max_check_attempts 4
normal_check_interval 5
retry_check_interval 1
contact_groups admins
notification_interval 960
notification_period 24x7
check_command check_local_users!20!50
}
Define a service to check the number of currently running procs
on the local machine. Warning if > 250 processes, critical if
> 400 users.
define service{
use generic-service ; Name of service template to use
host_name localhost
service_description Total Processes
is_volatile 0
check_period 24x7
max_check_attempts 4
normal_check_interval 5
retry_check_interval 1
contact_groups admins
notification_interval 960
notification_interval 960
notification_period 24x7
check_command check_local_procs!250!400
}
Define a service to check the load on the local machine.
define service{
use generic-service ; Name of service template to use
host_name localhost
service_description Current Load
is_volatile 0
check_period 24x7
max_check_attempts 4
normal_check_interval 5
retry_check_interval 1
contact_groups admins
notification_interval 960
notification_period 24x7
check_command check_local_load!5.0,4.0,3.0!10.0,6.0,4.0
}
Also, when I uncomment the checkcommands line, I get an error message when I run the nagios check. When I keep it like it is, it checks out just fine.
Thanks again for your assistance. : )
