# =============================== SETUP NOTES ================================
#
# 1. Make sure to check and if necessary adjust the the path to utils.pm
# 2. Make sure you have snmpnetstat in /usr/bin or adjust the path below
# 3. Syntax of snmpnetstat is different depending on which NET-SNMP package
# you have installed. Please specify your version of NET-SNMP package
# as '-N 5.0" or '-N 5.4' if you're unsure use '-v' and see what was
# autodetermined.
# 4. Beware that all service port names are ALWAYS retrieved from system
# running plugin and in case of SNMP check this might not be the same
# as what is set on remote system.
#
# TCP Port names are specified with '-p' or '-a' option for checking number
# of connections based on specified warning and critical values and with '-A'
# for those ports which you want in perfomance output. Each TCP port name
# (or number) should be prefixed with either '>' or '<' to specify if you
# want to check incoming connections to the specified port ('<') or outgoing
# connections ('>') to the specified port on remote system. For example
# using '--ports >smtp' means you want to check on number of outgoing SMTP
# (port 25) connections.
#
# The values retrieved are compared to specified warning and critical levels.
# Warning and critical levels are specified with '-w' and '-c' and each one
# must have exact same number of values (separated by ',') as number of
# attribute (tcp port names) specified with '-p'. Any values you dont want
# to compare you specify as ~. There are also number of other one-letter
# modifiers that can be used before actual data value to direct how data is
# to be checked. These are as follows:
# > : issue alert if data is above this value (default)
# < : issue alert if data is below this value
# = : issue alert if data is equal to this value
# ! : issue alert if data is NOT equal to this value
# A special modifier '^' can also be used to disable checking that warn values
# are less than (or greater than) critical values (it is rarely needed).
#
# Additionally if you want performance output then use '-f' option to get all
# the ports specified with '-p' or specify particular list of of ports for
# performance data with '-A' (this list can include names not found in '-p').
# Note that when reporting for in perfomance data instead of saying ">smtp'
# or "<smtp" the plugin will report it as 'smtp_out=' or 'smtp_in='.
#
# ============================= SETUP EXAMPLES ===============================
#
# The first example is for your server to check SMTP connections - warnings
# would be sent here fore more then 15 incoming connections or more then 10
# outgoing and critical alerts for more than 40 incoming or 20 outgoing
# ----
# define command {
# command_name check_smtp_connections
# command_line $USER1$/check_netstat.pl -L "SMTP Load" -H $HOSTADDRESS$ -C $ARG1$ -N 5.3 -2 -p "<smtp,>smtp" -w $ARG2$ -c $ARG3$ -f -A "@"
# }
#
# define service{
# use std-service
# service_description SMTP Load
# hostgroups mailserv
# check_command check_smtp_connections!public!">15,>10"!">40,>20"
# }
#
# ----
# The second example is for a webserver to check HTTP connections. In
# this case the server is always little loaded (i.e. you have busy website)
# so not only is their upper bound of 30 for warning and 100 for critical
# but also a bound to send alert if there are < 5 connections (and to
# specify this http name is repeated twice at '-p'; the result is a
# little strange though as it will report "http in connections" twice -
# its on my "todo list" to get this taken care of and only report same
# port/direction information once).
#
# define command {
# command_name check_http_connections
# command_line $USER1$/check_netstat.pl -L "HTTP Load" -H $HOSTADDRESS$ -C $ARG1$ -2 -p "http,http" -w $ARG2$ -c $ARG3$ -A "http,@"
# }
#
# define service{
# use std-service
# service_description HTTP Load
# hostgroups webserv
# check_command check_http_connections!public!"<5,>30"!"~,100"
# }
#
# Note: those who want to minimize load on nagios server and number of extra
# lookups should really combine above into one command if your server
# is doing both HTTP and SMTP (but of course then it might not look
# as nice in the services list)
