HOWTO Install Nagios with graphing services

$ file /usr/sbin/apache2
/usr/sbin/apache2: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.4.1, dynamically linked (uses shared libs), stripped

$ # add some smart commands to check mod_perl not being loaded
$ grep -Ri 'mod_perl' /etc/apache2/*

$ which nmap
/usr/bin/nmap

# emerge net-analyzer/nagios
# cd /usr/local
# ln -s ../nagios nagios
# mkdir /var/log/nagios
# chmod 750 /var/log/nagios
# chown nagios:apache /var/log/nagios

# cp /usr/share/doc/nagios-core-1.4.1/sample-configs/* /etc/nagios/
# cd /etc/nagios
# bunzip2 *.bz2
# rename .cfg-sample .cfg *.cfg-sample
# touch serviceextinfo.cfg
# chmod 640 *.cfg
# chown nagios:apache *.cfg
# ln -s /etc/nagios/nagios.cfg /etc/nagios.cfg
# cd /usr/nagios
# ln -s /etc/nagios/ etc

# Added module support for Nagios
APACHE2_OPTS="-D DEFAULT_VHOST -D PERL -D NAGIOS"

    Allow from 127.0.0.1 192.168.0.128/255.255.255.128

AddHandler cgi-script .cgi

ScriptAlias /nagios/cgi-bin /usr/nagios/sbin

<Directory "/usr/nagios/sbin">
    Options ExecCGI
    AllowOverride None
    Order allow,deny
    Allow from 127.0.0.1 192.168.0.128/255.255.255.128
    AuthName "Nagios Access"
    AuthType Basic
    AuthUserFile /etc/nagios/htpasswd.users
    Require valid-user
</Directory>

Alias /nagios /usr/nagios/share

<Directory "/usr/nagios/share">
    Options None
    AllowOverride None
    Order allow,deny
    Allow from 127.0.0.1 192.168.0.128/255.255.255.128
    AuthName "Nagios Access"
    AuthType Basic
    AuthUserFile /etc/nagios/htpasswd.users
    Require valid-user
</Directory>

# /etc/init.d/apache2 restart
* Caching service dependencies ...          [ ok ]
* Stopping apache2 ...                      [ ok ]
* Starting apache2 ...                      [ ok ]

AuthName "Nagios Access"
AuthType Basic
AuthUserFile /etc/nagios/htpasswd.users
AuthGroupFile /etc/nagios/htpasswd.group
Require group nagios

# ln -s /etc/nagios/htaccess /usr/nagios/sbin/.htaccess 
# ln -s /etc/nagios/htaccess /usr/nagios/share/.htaccess
# ls -ld /etc/nagios # should be drwxr-x---
# chmod +x /etc/nagios # it should be drwxr-x--x now

nagios: nagiosadmin <username>

# htpasswd2 -c /etc/nagios/htpasswd.users nagiosadmin
New password:
Re-type new password:
Adding password for user nagiosadmin

# chown apache:apache /etc/nagios/htpasswd.users
# chmod 640 /etc/nagios/htpasswd.users

# chown apache:apache /etc/nagios/htpasswd.group
# chmod 640 /etc/nagios/htpasswd.group

# chmod 640 /usr/nagios/sbin/.htaccess
# chown apache:apache /usr/nagios/sbin/.htaccess

# htpasswd2 /etc/nagios/htpasswd.users <username>

ln -s /usr/nagios/share/ /var/www/localhost/htdocs/nagios

Whoops!

Error: Could not read host and service status information!

The most common cause of this error message (especially for new users), is the
fact that Nagios is not actually running. If Nagios is indeed not running, this
is a normal error message. It simply indicates that the CGIs could not obtain
the current status of hosts and services that are being monitored. If you've just
installed things, make sure you read the documentation on starting Nagios.

Some other things you should check in order to resolve this error include:

   1. Check the Nagios log file for messages relating to startup or status data
      errors.
   2. Always verify configuration options using the -v command-line option before
      starting or restarting Nagios!
   3. Make sure you've compiled the main program and the CGIs to use the same status
      data storage options (i.e. text file or database). If the main program is storing
      status data in a text file and the CGIs are trying to read status data from a
      database, you'll have problems.

Make sure you read the documentation on installing, configuring and running Nagios
thoroughly before continuing. If all else fails, try sending a message to one of the
mailing lists. More information can be found at http://www.nagios.org. 

# mysqladmin -u root -p create nagios

# mysql -u root -p
mysql> use nagios
mysql> source /usr/share/doc/nagios-core-1.4.1/contrib/database/create_mysql
mysql> quit

#!/bin/sh

# Name: mknagios-sql.sh
#
# Purpose: This file will ask the user for the Nagios DB user/pass and
# for the Nagios CGI user/pass, then generate a file with the SQL
# statements required to set up access for both users.
#
# How to run: This script takes no input arguments; it prompts for the info.
#
# Note: This assumes Nagios and MySQL will be running on the same
# server. If this assumption is false, then modify nagios_host variable to
# match the FQDN hostname of the Nagios server.
#
# License: Public domain with no redistribution or modification limitations.

# Clean up stuff in case we abort due to ctrl-c'ing out early
trap "stty echo ; rm -f /tmp/mknagios.sql >/dev/null 2>&1 ; exit 1" 2

# Define key variables
outfile="/tmp/mknagios.sql"
nagios_host="localhost"

dbusr_tables="hostdowntime servicedowntime hostcomments servicecomments"
dbusr_tables="${dbusr_tables} programstatus hoststatus"
dbusr_tables="${dbusr_tables} servicestatus programretention"
dbusr_tables="${dbusr_tables} hostretention serviceretention"

cgiusr_tables="hostdowntime servicedowntime hostcomments servicecomments"
cgiusr_tables="${cgiusr_tables} programstatus hoststatus servicestatus"
cgiusr_tables="${cgiusr_tables} hostextinfo serviceextinfo"

# If the output file already exists from a previous run, be nice and
# move it out of the way instead of nuking it.
mv -f ${outfile} ${outfile}.old >/dev/null 2>&1

# Inform the user they may accept default usernames but MUST enter a password
echo "Note: you may press enter for the username choices if you accept the"
echo "suggested default names."
echo
echo "You MUST enter a password, and the passwords echo SHOULD be different."
echo

# Ask for desired nagios DB username
echo -n "Please enter the Nagios DB username: [nagios-db] "
read dbusr

# Select the default username if user pressed return to accept it
if [ -z "${dbusr}" ]; then
        dbusr="nagios-db"
fi

# Ask for desired nagios DB password
echo -n "Please enter the Nagios DB password: "
stty -echo
read dbpass
stty echo
echo
echo

# Did the user enter a password? If not, bail out
if [ -z "${dbpass}" ]; then
        echo "Oops. You didn't enter a password. Exiting."
        exit 1
fi

# Ask for desired nagios CGI username
echo -n "Please enter the Nagios CGI username: [nagios-cgi] "
read cgiusr

# Select the default username if user pressed return to accept it
if [ -z "${cgiusr}" ]; then
        cgiusr="nagios-cgi"
fi

# Ask for desired nagios CGI password
echo -n "Please enter the Nagios CGI password: "
stty -echo
read cgipass
stty echo
echo
echo

# Did the user enter a password? If not, bail out
if [ -z "${cgipass}" ]; then
        echo "Oops. You didn't enter a password. Exiting."
        exit 1
fi

# Create output file with SQL statements
for table in ${dbusr_tables}
do
        (echo -n "GRANT select,insert,update,delete"
         echo -n " ON nagios.${table}"
         echo -n " TO '${dbusr}'@'${nagios_host}'"
         echo -n " IDENTIFIED BY '${dbpass}';"
         echo ) >> ${outfile}
done

for table in ${cgiusr_tables}
do
        (echo -n "GRANT select"
         echo -n " ON nagios.${table}"
         echo -n " TO '${cgiusr}'@'${nagios_host}'"
         echo -n " IDENTIFIED BY '${cgipass}';"
         echo ) >> ${outfile}
done

(echo -n "GRANT lock tables ON nagios.* TO '${dbusr}'@'${nagios_host}'"
echo " IDENTIFIED BY '${dbpass}';" ) >> ${outfile}

(echo -n "GRANT lock tables ON nagios.* TO '${cgiusr}'@'${nagios_host}'"
echo " IDENTIFIED BY '${cgipass}';" ) >> ${outfile}

echo "FLUSH PRIVILEGES;" >> ${outfile}

# Inform user the file is ready and where to pick it up.
echo "You may use ${outfile} for the next step of Nagios+MySQL
installation."

# We're done, go in peace.
exit 0 

# chmod 700 mknagios-sql.sh
# ./mknagios-sql.sh

# mysql -u root -p
mysql> source /tmp/mknagios.sql
mysql> quit

# Sets $USER1$ to be the path to the plugins
$USER1$=/usr/nagios/libexec

# Sets $USER2$ to be the path to event handlers
$USER2$=/usr/nagios/libexec/eventhandlers

# Store some usernames and passwords (hidden from the CGIs)
#$USER3$=nagios-db
#$USER4$=<password>


# DB STATUS DATA
# Note: These config directives are only used if you compiled
# in database support for status data!
# The user you specify here needs SELECT, INSERT, UPDATE, and
# DELETE privileges on the 'programstatus', 'hoststatus',
# and 'servicestatus' tables in the database.

xsddb_host=localhost
xsddb_port=3306
xsddb_database=nagios
xsddb_username=nagios-db
xsddb_password=<password>
xsddb_optimize_data=1
xsddb_optimize_interval=3600


# DB COMMENT DATA
# Note: These config directives are only used if you compiled
# in database support for comment data!
# The user you specify here needs SELECT, INSERT, UPDATE, and
# DELETE privileges on the 'hostcomments' and 'servicecomments'
# tables in the database.

xcddb_host=localhost
xcddb_port=3306
xcddb_database=nagios
xcddb_username=nagios-db
xcddb_password=<password>
xcddb_optimize_data=1



# DB DOWNTIME DATA
# Note: These config directives are only used if you compiled
# in database support for downtime data!
# The user you specify here needs SELECT, INSERT, UPDATE, and
# DELETE privileges on the 'hostdowntime' and 'servicedowntime'
# tables in the database.

xdddb_host=localhost
xdddb_port=3306
xdddb_database=nagios
xdddb_username=nagios-db
xdddb_password=<password>
xdddb_optimize_data=1


# DB RETENTION DATA
# Note: These config directives are only used if you compiled
# in database support for retention data!
# The user you specify here needs SELECT, INSERT, UPDATE, and
# DELETE privileges on the 'programretention', 'hostretention',
# and 'serviceretention' tables in the database.

xrddb_host=localhost
xrddb_port=3306
xrddb_database=nagios
xrddb_username=nagios-db
xrddb_password=<password>
xrddb_optimize_data=1

# MAIN CONFIGURATION FILE
main_config_file=/etc/nagios/nagios.cfg

# PHYSICAL HTML PATH
physical_html_path=/usr/nagios/share

# URL HTML PATH
url_html_path=/nagios

# CONTEXT-SENSITIVE HELP
show_context_help=0

# NAGIOS PROCESS CHECK COMMAND
# If you are using database backend
nagios_check_command=/usr/nagios/libexec/check_nagios_db.pl -e 5 -C '/usr/nagios/bin/nagios'
# Else
# nagios_check_command=/usr/nagios/libexec/check_nagios /var/nagios/status.log 5 '/usr/nagios/bin/nagios'

# AUTHENTICATION USAGE
use_authentication=1

# SYSTEM/PROCESS INFORMATION ACCESS
authorized_for_system_information=nagiosadmin,<username>

# CONFIGURATION INFORMATION ACCESS
authorized_for_configuration_information=nagiosadmin,<username>

# SYSTEM/PROCESS COMMAND ACCESS
authorized_for_system_commands=nagiosadmin,<username>

# GLOBAL HOST/SERVICE VIEW ACCESS
authorized_for_all_services=nagiosadmin,<username>
authorized_for_all_hosts=nagiosadmin,<username>

# GLOBAL HOST/SERVICE COMMAND ACCESS
authorized_for_all_service_commands=nagiosadmin,<username>
authorized_for_all_host_commands=nagiosadmin,<username>

# DEFAULT STATUSMAP LAYOUT METHOD
default_statusmap_layout=5

# DEFAULT STATUSWRL LAYOUT METHOD
default_statuswrl_layout=4

# PING SYNTAX
ping_syntax=/bin/ping -n -U -c 5 $HOSTADDRESS$

# REFRESH RATE
refresh_rate=90

# DG EXTENDED DATA
xeddb_host=localhost
xeddb_port=3306
xeddb_database=nagios
xeddb_username=nagios-cgi
xeddb_password=<password>

# DB STATUS DATA (Read-Only For CGIs)
xsddb_host=localhost
xsddb_port=3306
xsddb_database=nagios
xsddb_username=nagios-cgi
xsddb_password=<password>

# DB COMMENT DATA (Read-Only For CGIs)
xcddb_host=localhost
xcddb_port=3306
xcddb_database=nagios
xcddb_username=nagios-cgi
xcddb_password=<password>

# DB DOWNTIME DATA (Read-Only For CGIs)
xdddb_host=localhost
xdddb_port=3306
xdddb_database=nagios
xdddb_username=nagios-cgi
xdddb_password=<password>

depend() {
need net mysql
use dns logger
after mysql
}

# /etc/init.d/mysql restart

# log_file=/var/nagios/nagios.log
log_file=/var/log/nagios/nagios.log

# status_file=/var/nagios/status.log
status_file=/var/log/nagios/status.log

# comment_file=/var/nagios/comment.log
comment_file=/var/log/nagios/comment.log

# downtime_file=/var/nagios/downtime.log
downtime_file=/var/log/nagios/downtime.log

# lock_file=/var/nagios/nagios.lock
lock_file=/var/run/nagios.pid

# use_syslog=1
use_syslog=0

# enable_flap_detection=0
enable_flap_detection=1

# date_format=us
date_format=euro

# admin_email=nagios
admin_email=email.address@my.provider.nl

# Generic host definition template
define host{
        name                            generic-host    ; The name of this host template - referenced in other host definitions, used for template recursion/resolution
        notifications_enabled           1       ; Host notifications are enabled
        event_handler_enabled           1       ; Host event handler is enabled
        flap_detection_enabled          1       ; Flap detection 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!
        }

# 'localhost' host definition
define host{
        use                     generic-host            ; Name of host template to use

        host_name               localhost
        alias                   nagios server
        address                 127.0.0.1
        check_command           check-host-alive
        max_check_attempts      10
        notification_interval   120
        notification_period     24x7
        notification_options    d,u,r
        }

# 'workstation' host definition
define host{
        use                     generic-host            ; Name of host template to use

        host_name               <another host>          ; Make sure that this value is resolvable test by ping if not place it in your /etc/hosts file
        alias                   workstation
        address                 ip.ad.dr.ess        ; Host IP address
        check_command           check-host-alive
        max_check_attempts      10
        notification_interval   120
        notification_period     24x7
        notification_options    d,u,r
        }

# Generic service definition template
define service{
        name                            generic-service ; The 'name' of this service template, referenced in other service definitions
        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
        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!
        }

# Service definition
define service{
        use                             generic-service         ; Name of service template to use

        host_name                       localhost
        service_description             SSH
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              3
        normal_check_interval           3
        retry_check_interval            1
        contact_groups                  <edit-this>             ; Make sure that the value here is also located in the contactgroup.cfg
        notification_interval           120
        notification_period             24x7
        notification_options            w,u,c,r
        check_command                   "/usr/bin/nmap -sT -p22 -P0 localhost| grep open 2> /dev/null"
        }

# Service definition
define service{
       use                             generic-service         ; Name of service template to use

       host_name                       *
       service_description             PING
       is_volatile                     0
       check_period                    24x7
       max_check_attempts              3
       normal_check_interval           5
       retry_check_interval            1
       contact_groups                  <edit-this>             ; Make sure that the value here is also located in the contactgroup.cfg
       notification_interval           120
       notification_period             24x7
       notification_options            c,r
       check_command                   check_ping!100.0,20%!500.0,60%
       }

# 'nagios' contact definition
define contact{
       contact_name                    nagios
       alias                           Nagios Admin
       service_notification_period     24x7
       host_notification_period        24x7
       service_notification_options    w,u,c,r
       host_notification_options       d,u,r
       service_notification_commands   notify-by-email
       host_notification_commands      host-notify-by-email
       email                           email.address@my.provider.nl
       }

# 'linux-boxes' host group definition
define hostgroup{
       hostgroup_name  linux-boxes
       alias           Linux Servers
       contact_groups  <edit-this> ; This needs to be the same value as the value located in service.cfg file. 
       members         localhost,<another>,<more>,<blah-blah-blah> ;make sure all hosts in host.cfg are attached to a hostgroup
       }

# 'linux-admins' contact group definition
define contactgroup{
       contactgroup_name       linux-admins
       alias                   Linux Administrators
       members                 nagios
       }

# Generic host definition template
define host{
        name                            generic-host    ; The name of this host template - referenced in other host definitions, used for template recursion/resolution
        notifications_enabled           1       ; Host notifications are enabled
        event_handler_enabled           1       ; Host event handler is enabled
        flap_detection_enabled          1       ; Flap detection 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!
        }

# 'localhost' host definition
define host{
                name                                    localhost
        use                     generic-host    ; Name of host template to use

        host_name               localhost
        alias                   nagios server
        address                 127.0.0.1
        check_command           check-host-alive
                check_period            24x7                    ; new
                contact_groups          linux-admins    ; new
        max_check_attempts      10
        notification_interval   120
        notification_period     24x7
        notification_options    d,u,r
                register                                1
        }

# myhost-service template
define service{
	use        generic-service
        name       myhost-service 

	hostgroups myhost

        register   0
        }


# nmap ssh
define service{
        use                             generic-service         ; Name of service template to use

        host_name                       localhost
        service_description             nmap ssh
        is_volatile                     0
        check_period                    24x7
        max_check_attempts              3
        normal_check_interval           3
        retry_check_interval            1
        contact_groups                  <edit-this>             ; Make sure that the value here is also located in the contactgroup.cfg
        notification_interval           120
        notification_period             24x7
        notification_options            w,u,c,r
        check_command                   "/usr/bin/nmap -sT -p22 -P0 localhost| grep open 2> /dev/null"

        }


# PING
define service{
       use                             generic-service         ; Name of service template to use

       host_name                       *
       service_description             PING
       is_volatile                     0
       check_period                    24x7
       max_check_attempts              3
       normal_check_interval           5
       retry_check_interval            1
       contact_groups                  <edit-this>             ; Make sure that the value here is also located in the contactgroup.cfg
       notification_interval           120
       notification_period             24x7
       notification_options            c,r
       check_command                   check_ping!100.0,20%!500.0,60%
       }


# SSH
define service{
       use                             myhost-service 
       host_name                       *
       service_description             SSH
       is_volatile                     0
       check_period                    24x7
       max_check_attempts              3
       normal_check_interval           5
       retry_check_interval            1
       contact_groups                  <edit this>
       notification_interval           120
       notification_period             24x7
       notification_options            c,r
       check_command                   check_ssh
}

# 'nagios' contact definition
define contact{
       contact_name                    nagios
       alias                           Nagios Admin
       service_notification_period     24x7
       host_notification_period        24x7
       service_notification_options    w,u,c,r
       host_notification_options       d,u,r
       service_notification_commands   notify-by-email
       host_notification_commands      host-notify-by-email
       email                           email.address@my.provider.nl
       }

# 'linux-boxes' host group definition
define hostgroup{
       hostgroup_name  linux-boxes
       alias           Linux Servers
#       contact_groups  <edit-this> ; This needs to be the same value as the value located in service.cfg file. Nagios 2.5 produces an error if you define this.
       members         localhost,<another>,<more>,<blah-blah-blah> ;make sure all hosts in host.cfg are attached to a hostgroup
       }

define hostgroup{
        hostgroup_name  myhost
        alias           Myhost at the lab
       }

# 'linux-admins' contact group definition
define contactgroup{
       contactgroup_name       linux-admins
       alias                   Linux Administrators
       members                 nagios
       }

###############################################################################
###############################################################################
#
# TIME PERIODS
#
###############################################################################
###############################################################################

# 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
        }

# MAIN CONFIGURATION FILE
main_config_file=/etc/nagios/nagios.cfg

# PHYSICAL HTML PATH
physical_html_path=/usr/nagios/share

# URL HTML PATH
url_html_path=/nagios

# CONTEXT-SENSITIVE HELP
show_context_help=0

# NAGIOS PROCESS CHECK COMMAND
nagios_check_command=/usr/nagios/libexec/check_nagios -e 5 -C '/usr/nagios/bin/nagios' -F '/var/log/nagios/status.log'

# AUTHENTICATION USAGE
use_authentication=1

# SYSTEM/PROCESS INFORMATION ACCESS
authorized_for_system_information=nagiosadmin,<username>

# CONFIGURATION INFORMATION ACCESS
authorized_for_configuration_information=nagiosadmin,<username>

# SYSTEM/PROCESS COMMAND ACCESS
authorized_for_system_commands=nagiosadmin,<username>

# GLOBAL HOST/SERVICE VIEW ACCESS
authorized_for_all_services=nagiosadmin,<username>
authorized_for_all_hosts=nagiosadmin,<username>

# GLOBAL HOST/SERVICE COMMAND ACCESS
authorized_for_all_service_commands=nagiosadmin,<username>
authorized_for_all_host_commands=nagiosadmin,<username>

# DEFAULT STATUSMAP LAYOUT METHOD
default_statusmap_layout=5

# DEFAULT STATUSWRL LAYOUT METHOD
default_statuswrl_layout=4

# PING SYNTAX
ping_syntax=/bin/ping -n -U -c 5 $HOSTADDRESS$

# REFRESH RATE
refresh_rate=90

# /etc/init.d/nagios start

# client
define host{
        use                     generic-template

        host_name               client.myhost
        alias                   client at the lab
        address                 192.168.0.100

        check_command           check-host-alive

        register		1
        }

process_performance_data=1
#service_perfdata_command=process-service-perfdata
service_perfdata_file=/var/nagios/rw/ngraph.pipe
service_perfdata_file_mode=w
service_perfdata_file_processing_interval=10
service_perfdata_file_template=$HOSTNAME$\t$SERVICEDESC$\t$SERVICEOUTPUT$\t$SERVICEPERFDATA$

define command {
    command_name    process-service-perfdata
    command_line    echo -e '$HOSTNAME$\t$SERVICEDESC$\t$SERVICEOUTPUT$\t$SERVICEPERFDATA$' > /var/nagios/rw/ngraph.pipe
    }

define config{
        pipe                /var/nagios/rw/ngraph.pipe
        interface           pipe
        pidfile             /var/run/nagios-grapher/nagios-grapher.pid
        user                nagios
        group               nagios
        rrdpath             /var/nagios/ngraph.rrd.d/
        tmppath             /tmp/nagiosgrapher/

        fontfile            /usr/share/rrdtool/fonts/DejaVuSansMono-Roman.ttf
        icon_image_src      /nagios/images/graph.png

        nagios_config       /etc/nagios/nagios.cfg
        cgi_config          /etc/nagios/cgi.cfg

        serviceext_type     MULTIPLE
        serviceext_path     /etc/nagios/serviceextinfo.d

        log_file            /var/log/nagios/ngraph.log
}

define ngraph{
}

cfg_file=...
cfg_dir=...

# default: on
# description: NRPE
service nrpe
{
        flags           = REUSE
        socket_type     = stream
        wait            = no
        user            = nagios
        server          = /usr/sbin/nrpe
        server_args     = -c /etc/nagios/nrpe.cfg --inetd
        log_on_failure  += USERID
        disable         = no
        only_from       = 192.168.0.0/24
}

#############################################################################
# Sample NRPE Config File
# Written by: Ethan Galstad (nagios@nagios.org)
#
# Last Modified: 02-23-2006
#
# NOTES:
# This is a sample configuration file for the NRPE daemon.  It needs to be
# located on the remote host that is running the NRPE daemon, not the host
# from which the check_nrpe client is being executed.
#############################################################################


# PID FILE
# The name of the file in which the NRPE daemon should write it's process ID
# number.  The file is only written if the NRPE daemon is started by the root
# user and is running in standalone mode.

pid_file=/var/run/nrpe.pid



# PORT NUMBER
# Port number we should wait for connections on.
# NOTE: This must be a non-priviledged port (i.e. > 1024).
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

server_port=5666



# SERVER ADDRESS
# Address that nrpe should bind to in case there are more than one interface
# and you do not want nrpe to bind on all interfaces.
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

#server_address=192.168.1.1



# NRPE USER
# This determines the effective user that the NRPE daemon should run as.
# You can either supply a username or a UID.
#
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

nrpe_user=nagios



# NRPE GROUP
# This determines the effective group that the NRPE daemon should run as.
# You can either supply a group name or a GID.
#
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

nrpe_group=nagios



# ALLOWED HOST ADDRESSES
# This is an optional comma-delimited list of IP address or hostnames
# that are allowed to talk to the NRPE daemon.
#
# Note: The daemon only does rudimentary checking of the client's IP
# address.  I would highly recommend adding entries in your /etc/hosts.allow
# file to allow only the specified host to connect to the port
# you are running this daemon on.
#
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd

#allowed_hosts=127.0.0.1,192.168.0.2



# COMMAND ARGUMENT PROCESSING
# This option determines whether or not the NRPE daemon will allow clients
# to specify arguments to commands that are executed.  This option only works
# if the daemon was configured with the --enable-command-args configure script
# option.
#
# *** ENABLING THIS OPTION IS A SECURITY RISK! ***
# Read the SECURITY file for information on some of the security implications
# of enabling this variable.
#
# Values: 0=do not allow arguments, 1=allow command arguments

dont_blame_nrpe=0



# COMMAND PREFIX
# This option allows you to prefix all commands with a user-defined string.
# A space is automatically added between the specified prefix string and the
# command line from the command definition.
#
# *** THIS EXAMPLE MAY POSE A POTENTIAL SECURITY RISK, SO USE WITH CAUTION! ***
# Usage scenario:
# Execute restricted commmands using sudo.  For this to work, you need to add
# the nagios user to your /etc/sudoers.  An example entry for alllowing
# execution of the plugins from might be:
#
# nagios          ALL=(ALL) NOPASSWD: /usr/lib/nagios/plugins/
#
# This lets the nagios user run all commands in that directory (and only them)
# without asking for a password.  If you do this, make sure you don't give
# random users write access to that directory or its contents!

# command_prefix=/usr/bin/sudo



# DEBUGGING OPTION
# This option determines whether or not debugging messages are logged to the
# syslog facility.
# Values: 0=debugging off, 1=debugging on

debug=0



# COMMAND TIMEOUT
# This specifies the maximum number of seconds that the NRPE daemon will
# allow plugins to finish executing before killing them off.

command_timeout=60



# WEEK RANDOM SEED OPTION
# This directive allows you to use SSL even if your system does not have
# a /dev/random or /dev/urandom (on purpose or because the necessary patches
# were not applied). The random number generator will be seeded from a file
# which is either a file pointed to by the environment valiable $RANDFILE
# or $HOME/.rnd. If neither exists, the pseudo random number generator will
# be initialized and a warning will be issued.
# Values: 0=only seed from /dev/[u]random, 1=also seed from weak randomness

allow_weak_random_seed=1



# INCLUDE CONFIG FILE
# This directive allows you to include definitions from an external config file.

include=/etc/nagios/nrpe_commands.cfg



# INCLUDE CONFIG DIRECTORY
# This directive allows you to include definitions from config files (with a
# .cfg extension) in one or more directories (with recursion).

#include_dir=<somedirectory>
#include_dir=<someotherdirectory>

#########################################
#
# NRPE COMMAND DEFINITIONS
#
#########################################

# Command definitions that this daemon will run.  Definitions
# are in the following format:
#
# command[<command_name>]=<command_line>
#
# When the daemon receives a request to return the results of <command_name>
# it will execute the command specified by the <command_line> argument.
#
# Unlike Nagios, the command line cannot contain macros - it must be
# typed exactly as it should be executed.
#
# Note: Any plugins that are used in the command lines must reside
# on the machine that this daemon is running on!  The examples below
# assume that you have plugins installed in a /usr/local/nagios/libexec
# directory.  Also note that you will have to modify the definitions below
# to match the argument format the plugins expect.  Remember, these are
# examples only!

# The following examples use hardcoded command arguments...

command[check_users]=/usr/nagios/libexec/check_users -w 5 -c 10
command[check_load]=/usr/nagios/libexec/check_load -w 15,10,5 -c 30,25,20
command[check_root]=/usr/nagios/libexec/check_local_disk -w 20 -c 10
command[check_disk1]=/usr/nagios/libexec/check_disk -w 20 -c 10 -p /dev/hda1
command[check_disk2]=/usr/nagios/libexec/check_disk -w 20 -c 10 -p /dev/hdb1
command[check_zombie_procs]=/usr/nagios/libexec/check_procs -w 5 -c 10 -s Z
command[check_total_procs]=/usr/nagios/libexec/check_procs -w 150 -c 200
command[check_nscd]=/etc/init.d/nscd status

# The following examples allow user-supplied arguments and can
# only be used if the NRPE daemon was compiled with support for
# command arguments *AND* the dont_blame_nrpe directive in this
# config file is set to '1'...

#command[check_users]=/usr/nagios/libexec/check_users -w $ARG1$ -c $ARG2$
#command[check_load]=/usr/nagios/libexec/check_load -w $ARG1$ -c $ARG2$
#command[check_disk]=/usr/nagios/libexec/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$
#command[check_procs]=/usr/nagios/libexec/check_procs -w $ARG1$ -c $ARG2$ -s $ARG3$

define command{
        command_name    check_nrpe
        command_line    /usr/local/nagios/libexec/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
        }

Installation

On the Windows machine

   1. Copy pNSClient.exe, pdh.dll, psapi.dll and counters.defs in any directory on the machine you want to monitor. ie. (c:\nsclient).
   2. Open a dos prompt in the installation directory
   3. Run the following command : >pNSClient.exe /install
   4. Type 'net start nsclient' on the command line or start the service 'Nagios Agent' in the services applet of the control panel.

# NSClient
define command{
        command_name    check_nt_disk
        command_line    $USER1$/check_nt -H $HOSTADDRESS$ -p 1248 -v USEDDISKSPACE -l $ARG1$ -w $ARG2$ -c $ARG3$
        }
define command{
        command_name    check_nt_cpuload
        command_line    $USER1$/check_nt -H $HOSTADDRESS$ -p 1248 -v CPULOAD -l $ARG1$
        }
define command{
        command_name    check_nt_uptime
        command_line    $USER1$/check_nt -H $HOSTADDRESS$ -p 1248 -v UPTIME
        }
define command{
        command_name    check_nt_clientversion
        command_line    $USER1$/check_nt -H $HOSTADDRESS$ -p 1248 -v CLIENTVERSION
        }
define command{
        command_name    check_nt_process
        command_line    $USER1$/check_nt -H $HOSTADDRESS$ -p 1248 -v PROCSTATE -l $ARG1$
        }
define command{
        command_name    check_nt_service
        command_line    $USER1$/check_nt -H $HOSTADDRESS$ -p 1248 -v SERVICESTATE -d SHOWALL -l $ARG1$
        }
define command{
        command_name    check_nt_memuse
        command_line    $USER1$/check_nt -H $HOSTADDRESS$ -p 1248 -v MEMUSE -w $ARG1$ -c $ARG2$
        }
define command{
        command_name    check_nt_pagingfile
        command_line    $USER1$/check_nt -H $HOSTADDRESS$ -p 1248 -v COUNTER -l "\\Paging File(_Total)\\% Usage","Paging File usage is %.2f %%" -w $ARG1$ -c $ARG2$
        }

define host{
        use                     generic-host
        host_name               ip.ad.dr.ess  ; or add a entry into your /etc/hosts file and replace with that hostname
        alias                   workstation NSClient 
        address                 ip.ad.dr.ess
        check_command           check-host-alive
        max_check_attempts      10
        notification_interval   120
        notification_period     24x7
        notification_options    d,u,r
        }

define hostgroup{
       hostgroup_name  windows
       alias           Windows Boxen
       contact_groups  admins
       members         ip.ad.dr.ess ; or hostname if it you've added it to the hosts file
        }