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*Web¥µ¡¼¥Ð¤«¤éNagios¤ËÂФ·¤Æ¥³¥Þ¥ó¥É¤òȯ¹Ô¤·¤ÆNagios¤òÁàºî¤¹¤ë¤³¤È¤Ë¤Ê¤ë°Ù¡¤
*Web¥µ¡¼¥Ð¤Î¥æ¡¼¥¶¤òNagios¤Î¥³¥Þ¥ó¥É¤ò½èÍý¤¹¤ëÀìÍѤΥ°¥ë¡¼¥×¤Î¥á¥ó¥Ð¡¼¤ËÀßÄꤷ¤Þ¤¹¡£
*httpd¥æ¡¼¥¶¤ò¿·¤·¤¯ºîÀ®¤·¤¿nagcmd¥á¥ó¥Ð¡¼¤Ë²Ã¤¨¤Þ¤¹¡£
# /usr/sbin/groupadd nagios
# /usr/sbin/useradd -d /usr/local/nagios -g nagios -m nagios
# /usr/sbin/groupadd nagcmd
# /usr/sbin/usermod -G nagcmd httpd
# /usr/sbin/usermod -G nagcmd nagios
!(1)gcc¤Î¥¤¥ó¥¹¥È¡¼¥ë¡Ê¸å¤ÇɬÍפȤʤë°Ù¡Ë
*# yum -y install gcc
!(2)Nagios¤Ï¡¤PNG¡¤JPEG¥é¥¤¥Ö¥é¥êÅùɬÍפʰ١¤³Æ¼ï¥¤¥ó¥¹¥È¡¼¥ë¡£
*PNG¥é¥¤¥Ö¥é¥ê¤Ï¡¢http://www.libpng.org/pub/png¤è¤ê¼èÆÀ¡Êlibpng-1.2.20.tar.gz¡Ë¡£
$ ./configure --prefix=/usr/local
$ cd
$ make
$ su
# make install
*JPEG¥é¥¤¥Ö¥é¥ê¤Ï¡¢http://www.ijg.org¤è¤ê¼èÆÀ¡Êjpegsrc.v6b.tar.gz¡Ë¡£
$ tar zvxf jpegsrc.v6b.tar.gz
$ cd
$ ./configure --pregix=/usr/local --enable-shared --enable-static
$ make
$ su
# make install
*¥¨¥é¡¼¤¬¤Ç¤¿¤Î¤Ç¡¤/usr/local/man/man1/cjpec.1¤òºîÀ®¤·¤¿¡£
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*°ìÈ̤ˡ¢GD¥é¥¤¥Ö¥é¥êËÜÂΤȡ¢perl¥â¥¸¥å¡¼¥ë¤È¤·¤Æ¤ÎGD.pm¤ò¤Ò¤È¤Þ¤È¤á¤Ë¤·¤Æ¸À¤¦¤³¤È¤¬Â¿¤¤¡£
*¤³¤³¤ÇɬÍפÊGD¥é¥¤¥Ö¥é¥ê¤Ï¡¢1.6.3°Ê¾å¤Ç¤¹¡£
*http://www.boutell.com/¤À¤Ã¤¿¤¬¡¤http://www.libgd.org/Main_Page¤ËÊѹ¹¡£
*wget¤Ç¥Õ¥¡¥¤¥ë¤ò¥À¥¦¥ó¥í¡¼¥É
*wget http://www.boutell.com/gd/http/gd-2.0.32.tar.gz¤«¤éwget http://www.libgd.org/releases/gd-2.0.35.tar.gz¤ØÊѹ¹¡£
$ wget http://www.libgd.org/releases/gd-2.0.35.tar.gz
*¥Õ¥¡¥¤¥ë¤òŸ³«¤·¤Þ¤¹¡£
$ tar xvfz gd-2.0.32.tar.gz
*Ÿ³«¤·¤¿¥Ç¥£¥ì¥¯¥È¥ê¤ËÆþ¤ê¤Þ¤¹¡£
$ cd gd-2.0.32
*make ¤Î½àÈ÷¤ò¤·¤Þ¤¹¡£
$ ./configure --with-png=/usr/local/lib --with-jpeg=/usr/local/bin --prefix=/usr/local
$ make
$ make test
$ su
# make install
!(4)Nagios¤ò¥¤¥ó¥¹¥È¡¼¥ë
*Nagios¤¬rpm¥¤¥ó¥¹¥È¡¼¥ë¤µ¤ì¤Æ¤¤¤Ê¤¤¤«¤É¤¦¤«³Îǧ
# rpm qa|grep nagios
*¡ÊNagios¤«¤é¤Îwget¤Ï¡¤¾Êά¡Ë
$ tar xvzf nagios-2.9.tar.gz¤ÇŸ³«
$ cd nagios-2.9
$ ./configure --prefix=/usr/local/nagios --with-command-group=nagcmd --with-gd-lib=/usr/local/lib
$ make all
# make install
# make install-init
# make install-commandmode
# make install-config
!(5)Nagios Plugin Development¤Î¥¤¥ó¥¹¥È¡¼¥ë
*¥À¥¦¥ó¥í¡¼¥É¤·¤¿¥Õ¥¡¥¤¥ë¤Ï¡¤nagios-plugins-1.4.9.tar.gz¤Ç¤·¤¿¡£
$ ./configure --prefix=/usr/local/nagios --with-cgiurl=/usr/local/nagios/cgi-bin
$ make
# make install
!(6)Nagios¤ÎWeb¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¤Î¤¿¤á¤ÎÀßÄê¤ò¹Ô¤¦¡£
*http.conf(/etc/httpd/conf/http.conf)¤Ë²¼µ¤ÎÆâÍÆ¤òÄɵ¡ÊCGI¤¬Æ°ºî¤¹¤ë¤è¤¦¤ËÀßÄê¤ò¹Ô¤¦¡Ë¡£
ScriptAlias /nagios/cgi-bin/ /usr/local/nagios/sbin/
<Directory "/usr/local/nagios/sbin/">
AllowOverride AuthConfig
Options ExecCGI
Order allow,denyvi /
Allow from all
</Directory>
Alias /nagios/ /usr/local/nagios/share/
<Directory "/usr/local/nagios/share/">
AllowOverride AuthConfig
Options None
Order allow,deny
Allow from all
</Directory>
!(7)´ÉÍý²èÌÌÍѥ桼¥¶¤ª¤è¤Ó¥Ñ¥¹¥ï¡¼¥É¤ÎºîÀ®
*Web¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¤ËBASICǧ¾Ú¤ò»È¤¤¤Þ¤¹¡£
*/usr/local/nagios/share/¤È/usr/local/nagios/sbin/¥Ç¥£¥ì¥¯¥È¥ê¤Ë.htaccess¤òºîÀ®¤¹¤ë¡£
*.htaccess¤ÎÀßÄê¡Êchmod 604¤ÇÀßÄê¡Ë
AuthName "Nagios Access"
AuthType Basic
AuthUserFile /usr/local/nagios/etc/htpasswd.users
require valid-user
*.htaccess¤Î¡ÖAuthUserFile¡×¤Ç»ØÄꤷ¤¿¡Ö/usr/local/nagios/etc/htpasswd.users¡×¤Ëhtpasswd¥³¥Þ¥ó¥É¤òÍøÍѤ·¤Æ¥æ¡¼¥¶¤òÄɲä·¤Þ¤¹¡£
*º£²ó¤Ï¡¢¡Önagios¡×¤È¤¤¤¦¥æ¡¼¥¶¤òÄɲä·¤Þ¤¹¡£
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*htpasswd¤ÇWeb¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹ÍÑ¥¢¥«¥¦¥ó¥ÈÅÐÏ¿
# su nagios
$ htpasswd -c /usr/local/nagios/etc/htpasswd.users nagios
New password:
Re-type new password:
Adding password for user nagios
!(8)Nagios´ðËÜÆ°ºîÀßÄê
*ÀßÄꤹ¤ë¥Õ¥¡¥¤¥ë·²
**¥á¥¤¥óÀßÄê¥Õ¥¡¥¤¥ë¡§nagios.cfg
**CGIÀßÄê¥Õ¥¡¥¤¥ë¡§cgi.cfg
**¥ê¥½¡¼¥¹ÀßÄê¥Õ¥¡¥¤¥ë¡§resource.cfg
**´Æ»ëÀßÄê¥Õ¥¡¥¤¥ë¡§localhost.cfg
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# su nagios
$ cd /usr/local/nagios/etc
$ cd nagios.cfg-sample nagios.cfg
$ cd cgi.cfg-sample cgi.cfg
$ cd resource.cfg-sample resource.cfg
*¸å¡¤localhost.cfg¤Ècommands.cfg¤ò¥³¥Ô¡¼
*nagios.cfg¤Î½¤Àµ²Õ½ê
37 #cfg_file=/usr/local/nagios/etc/checkcommands.cfg¡¡¢«¤³¤ì¤Ï¤Ê¤«¤Ã¤¿¡£
40 #cfg_file=/usr/local/nagios/etc/misccommands.cfg¡¡¢«¤³¤ì¤Ï¤Ê¤«¤Ã¤¿¡£
131 check_external_commands=1
*cgi.cfg¤Î½¤Àµ²Õ½ê
116 authorized_for_system_information=nagios
128 authorized_for_configuretion_information=nagios
141 authorized_for_system_commands=nagios
154 authorized_for_all_services=nagios
155 authorized_for_all_hosts=nagios
168 authorized_for_all_service_commands=nagios
169 authorized_for_all_host_commands=nagios
*Nagios¥Ç¡¼¥â¥ó¤Î¾õÂÖ¤òWeb¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¤«¤éÇİ®¤¹¤ëÀßÄê¡Êcgi.cfg¡Ë
65 nagios_check_command=/usr/local/nagios/libexec/check_nagios /usr/local/nagios/var/status.dat 5 '/usr/local/nagios/bin/nagios'
*¥ê¥½¡¼¥¹ÀßÄê¥Õ¥¡¥¤¥ë¡Êresource.cfg¡Ë
ÆÃ¤Ë̵¤·
*ÀßÄê¤ÎÀ°¹çÀ¥Á¥§¥Ã¥¯¤ÈNagios¤Îµ¯Æ°
ÀßÄê¥Õ¥¡¥¤¥ë¤Î¥Á¥§¥Ã¥¯¤Ï¡¢nagios¥³¥Þ¥ó¥É¤Ë-v¤Î°ú¿ô¤ò¤Ä¤±¤Ænagios.cfg¤ò»ØÄꤷ¤Þ¤¹¡£
# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
*¾åµ¥³¥Þ¥ó¥É¤ò¹Ô¤¦¤È¡¤²¼¤Îɽ¼¨¤¬¤µ¤ì¤ì¤Ð¡¤OK¡£¥¨¥é¡¼¤¬½Ð¤¿¾ì¹ç¤Ë¤Ï¡¤ÀßÄêÆâÍÆ¤ò¥Á¥§¥Ã¥¯¤¹¤ë¤³¤È¡£
Total Warnings: 0
Total Errors: 0
Things look okay -No serious problems were detected during the pre-flight check
*¸å¡¤³Æ*.cfg¤Î°À¡Ê664¡Ë¤ËÀßÄꤷ¤Æ¤ª¤¯¤³¤È¡£
!(9)Nagios¤Îµ¯Æ°
$ su -
# /etc/init.d/nagios start
¡¡
!(10)Nagios¤ò¼«Æ°µ¯Æ°¤Ë¤¹¤ë
# cd /etc/init.d/
# chmod 755 nagios
# /sbin/chkconfig --add nagios
# /sbin/chkconfig --list nagios
# /sbin/chkconfig --level 35 nagios on
# /sbin/chkconfig --list nagios
!(11)´Æ»ëÂоÝPC¤òÄɲ乤롣
*/usr/local/nagios/etc/localhost.cfg¤Ë´Æ»ëÂоݥۥ¹¥È¤òÄɲ乤ë¡Ê°Ê²¼Ä¹¤¤¤Ç¤¹¤¬¡¤¤´´ªÊÛ¤ò¡Ë¡£
###############################################################################
# LOCALHOST.CFG - SAMPLE OBJECT CONFIG FILE FOR MONITORING THIS MACHINE
#
# Last Modified: 11-27-2006
#
# NOTE: This config file is intended to servce as an *extremely* simple
# example of how you can create your object configuration file(s).
#
###############################################################################
###############################################################################
###############################################################################
#
#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
}
# 'workhours' timeperiod definition
define timeperiod{
timeperiod_name workhours
alias "Normal" Working Hours
monday 09:00-17:00
tuesday 09:00-17:00
wednesday 09:00-17:00
thursday 09:00-17:00
friday 09:00-17:00
}
# 'nonworkhours' timeperiod definition
define timeperiod{
timeperiod_name nonworkhours
alias Non-Work Hours
sunday 00:00-24:00
monday 00:00-09:00,17:00-24:00
tuesday 00:00-09:00,17:00-24:00
wednesday 00:00-09:00,17:00-24:00
thursday 00:00-09:00,17:00-24:00
friday 00:00-09:00,17:00-24:00
saturday 00:00-24:00
}
# 'none' timeperiod definition
define timeperiod{
timeperiod_name none
alias No Time Is A Good Time
}
###############################################################################
###############################################################################
#
# COMMANDS
#
###############################################################################
###############################################################################
# NOTE: Sample command definitions can now be found in the sample commands.cfg
# file
###############################################################################
###############################################################################
#
# 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
notification_period 24x7 ; Send host notifications at any time
register 0 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL HOST, JUST A TEMPLATE!
}
# Linux host definition template - This is NOT a real host, just a template!
define host{
name linux-server ; The name of this host template
use generic-host ; This template inherits other values from the generic-host template
check_period 24x7 ; By default, Linux hosts are checked round the clock
max_check_attempts 10 ; Check each Linux host 10 times (max)
check_command check-host-alive ; Default command to check Linux hosts
notification_period workhours ; Linux admins hate to be woken up, so we only notify during the day
; Note that the notification_period variable is being overridden from
; the value that is inherited from the generic-host template!
notification_interval 120 ; Resend notification every 2 hours
notification_options d,u,r ; Only send notifications for specific host states
contact_groups admins ; Notifications get sent to the admins by default
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 linux-server ; Name of host template to use
; This host definition will inherit all variables that are defined
; in (or inherited by) the linux-server host template definition.
host_name localhost
alias localhost
address 127.0.0.1
}
#
#¡¡2007.9.20¡¡Äɲä·¤Þ¤·¤¿¡£
#¡¡¤³¤³¤Ç¡¢´Æ»ëÂоݥۥ¹¥È¤Î̾Á°¡¢IP¥¢¥É¥ì¥¹Åù¤òÄêµÁ¤·¤Þ¤¹¡£
#
define host{
use linux-server
host_name server01
alias server01
address ***.***.***.***
}
define host{
use linux-server
host_name server02
alias server02
address ***.***.***.***
}
#
###############################################################################
###############################################################################
#
# HOST GROUPS
#
###############################################################################
###############################################################################
# We only have one host in our simple config file, so there is no need to
# create more than one hostgroup.
#
#¤³¤Á¤é¤Ç¤Ï¡¤´Æ»ëÂоݥۥ¹¥È¤Î¥°¥ë¡¼¥×¤òÀßÄꤷ¤Þ¤¹¡£
#members¤Ï¡¤¾åµ¤ÇÀßÄꤷ¤¿host_name¡¤alias̾¤ÇÅÐÏ¿¤·¤Þ¤¹¡£
#
define hostgroup{
hostgroup_name test
alias Test Servers
members localhost,server01,server02
}
###############################################################################
###############################################################################
#
# 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
is_volatile 0 ; The service is not volatile
register 0 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL SERVICE, JUST A TEMPLATE!
}
# Local service definition template - This is NOT a real service, just a template!
define service{
name local-service ; The name of this service template
use generic-service ; Inherit default values from the generic-service definition
check_period 24x7 ; The service can be checked at any time of the day
max_check_attempts 4 ; Re-check the service up to 4 times in order to determine its final (hard) state
normal_check_interval 5 ; Check the service every 5 minutes under normal conditions
#
#¡¡¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¡¤5ʬ¤Ç¤¹¤¬¡¤º£²ó¤Ï¡¤1ʬ¤ËÊѹ¹¤·¤Æ¤¤¤Þ¤¹¡Ê¾åµ¤Ï¡¤5ʬ¤Î¤Þ¤Þ¤Ç¤¹¡£¡Ë
#
retry_check_interval 1 ; Re-check the service every minute until a hard state can be determined
contact_groups admins ; Notifications get sent out to everyone in the 'admins' group
notification_options w,u,c,r ; Send notifications about warning, unknown, critical, and recovery events
notification_interval 60 ; Re-notify about service problems every hour
notification_period 24x7 ; Notifications can be sent out at any time
register 0 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL SERVICE, JUST A TEMPLATE!
}
#
#
#°Ê²¼¤è¤ê¡¤³Æ´Æ»ë¥µ¡¼¥Ó¥¹¤ÎÀßÄê¤Ë¡¤¾åµ¤ÇÄêµÁ¤·¤¿´Æ»ëÂоݥۥ¹¥È¡Êhost_name¡¤alias̾¡Ë¤òÄɲ䷤Ƥ¤¤¤Þ¤¹¡£
#
#
Define a service to "ping" the local machine
define service{
use local-service ; Name of service template to use
host_name localhost,server01,server02
#
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service_description PING
check_command check_ping!100.0,20%!500.0,60%
#
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}
# 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 local-service ; Name of service template to use
host_name localhost,server01,server02
service_description Root Partition
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 local-service ; Name of service template to use
host_name localhost,server01,server02
service_description Current Users
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 local-service ; Name of service template to use
host_name localhost,server01,server02
service_description Total Processes
check_command check_local_procs!250!400!RSZDT
}
# Define a service to check the load on the local machine.
define service{
use local-service ; Name of service template to use
host_name localhost,server01,server02
service_description Current Load
check_command check_local_load!5.0,4.0,3.0!10.0,6.0,4.0
}
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