xxxxxxxxxx Install & Manage NAGIOS Monitoring tool by Shirish Shukla xxxxxxxxxxxxx
Nagios® is a system and network monitoring application. (Description from some source)
Some of the many features of Nagios® include:
- Monitoring of network services (SMTP, POP3, HTTP, NNTP, PING, etc.)
- Monitoring of host resources (processor load, disk usage, etc.)
- Simple plugin design that allows users to easily develop their own service checks
- Parallelized service checks
- Ability to define network host hierarchy using "parent" hosts, allowing detection of and distinction between hosts that are down and those that are unreachable
- Contact notifications when service or host problems occur and get resolved (via email, pager, or user-defined method)
- Ability to define event handlers to be run during service or host events for proactive problem resolution
- Automatic log file rotation
- Support for implementing redundant monitoring hosts
- Optional web interface for viewing current network status, notification and problem history, log file, etc.
PREREQUISITE:
=============
Apache (https)
gcc libraries
Nagios Tols:
============
# mkdir /root/SW
wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.2.3.tar.gz
wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.11.tar.gz
##Adduser and groups
# useradd -m nagios
# passwd nagios
# groupadd nagios <--Just for confirmation
# usermod -G nagios nagios <--Just for confirmation
# groupadd nagcmd
# usermod -a -G nagcmd nagios
# usermod -a -G nagcmd wwwrun <--Not Require(optional) need to create group wwwrun before
INSTALLATION:
=============
# cd /root/SW
# tar xzf nagios-3.2.3.tar.gz
# cd nagios-3.2.3
# ./configure --with-command-group=nagcmd
# make all
# make install
# make install-init
# make install-config
# make install-commandmode
# vi /usr/local/nagios/etc/objects/contacts.cfg
At line
35: Change --> email youadmin-mail-id
# make install-webconf
# htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
Note: if you want to change admin "nagiosadmin" name chanhe all in "/usr/local/nagios/etc/cgi.cfg" file too .
##Start httpd(Apache)
# /etc/init.d/httpd restart
# chkconfig httpd on
### Instal nagios-plugin
# tar xzf nagios-plugins-1.4.11.tar.gz
# cd nagios-plugins-1.4.11
# ./configure --with-nagios-user=nagios --with-nagios-group=nagios
# make
# make install
#### Start nagios
# /etc/init.d/nagios restart
# chkconfig nagios on
###### How to OPERATE
# Webadmin panel
http://your-ip/nagios/ < Provide above seted id & password---
EG: To Check All Hosts without options You can set it to your default apache hosting file for your monitoring purpose
http://192.168.8.10/nagios/cgi-bin/status.cgi?host=all
### Want default as above to your ip
# vi /var/www/html/index.html
<html>
<head>
<META HTTP-EQUIV="Refresh"
CONTENT="2; URL=http://192.168.8.10/nagios/cgi-bin/status.cgi?host=all">
</head>
<body bgcolor="pink">
<br />
<br />
<br />
<br />
<br />
<br />
<Center>
<h1> <font color="green"> Wait 2 Sec.............</font></h1>
</body>
</html>
##Save and relaod httpd
Now just type your ip on browser and <---Enter
####################################################
#################Add your servers to monitor ############
###################################################
# cd /usr/local/nagios <-- Nagios default files
# cd /usr/local/nagios/etc/objects <<-- All cfg file server's config file to monitor
# cat /usr/local/nagios/etc/nagios.cfg <<<-- NAgios main config file
# vi /usr/local/nagios/etc/nagios.cfg <<<--Add your own config dirs where your all server cfg file will reside
==>Add below line
cfg_dir=/usr/local/nagios/etc/lnx-servers
# cd usr/local/nagios/etc/lnx-servers
# vi my-samba_server
##############################################################
############# HOST DEFINITION ###############################
##############################################################
# HOST DEFINITION
define host{
use linux-server ; defined in template
host_name scratch-samba.8.10
alias samba-server
address 192.168.8.10
}
# HOST GROUP DEFINITION (Optional, you can add multiple members to your already created group seperated by comma)
define hostgroup{
hostgroup_name my-servers ; The name of the hostgroup
alias MY Linux Servers ; Long name of the group
members scratch-samba.8.10 ; Comma separated list of hosts that belong to this group
}
##############################################################
####################### SERVICE DEFINITIONS #################
##############################################################
###Ping check
define service{
use local-service ; defined in template /usr/local/nagios/etc/objects/templates.cfg
host_name scratch-samba.8.10
service_description PING
check_command check_ping!100.0,20%!500.0,60% ; Defined in commnd file /usr/local/nagios/etc/objects/commands.cfg
}
### SSH service Check
define service{
use local-service
host_name scratch-samba.8.10
service_description SSH
check_command check_ssh!-t 5 -r "OpenSSH_4.2"
}
define service{
use local-service ; Name of service template to use
host_name scratch-samba.8.10
service_description samba
check_command check_http
}
define service{
use local-service ; Inherit default values from a template
host_name scratch-samba.8.10
service_description SMTP
check_command check_smtp
}
#check port 139
define service{
use local-service ; Inherit default values from a template
host_name scratch-samba.8.10
service_description Samba_port139
check_command check_tcp!139
}
## Nagios Fine tunning file (Do not replace original line comment that then add below line)
# vi /usr/local/nagios/etc/cgi.cfg
### Don't show pending satate of service
use_pending_states=0
### Disable webadmin auth
use_authentication=0
### Want to authorize an user shukla to have all admin rights for weadmin panel
authorized_for_system_information=shukla
authorized_for_configuration_information=shukla
authorized_for_system_commands=shukla
authorized_for_all_hosts=shukla
authorized_for_all_services=shukla
authorized_for_all_service_commands=shukla
authorized_for_all_host_commands=shukla
### Want default guest user, WARN: dont' allow this
default_user_name=guest
### Want an read only user
#htpasswd -c /usr/local/nagios/etc/htpasswd.users user1
#using command add more users
authorized_for_read_only=user1
### Want to change ping syntax
ping_syntax=/bin/ping -n -U -c 5 $HOSTADDRESS$
### Refresh rate of cgi (status, statusmap, extinfo, and outages) in sec
refresh_rate=60
### Want to play sound on webpanel if error occour on network
## Plcace your audio file at
# /usr/local/nagios/share/media
##Un commen tbelow lines after adding resp audio files
#host_unreachable_sound=hostdown.wav
#host_down_sound=hostdown.wav
#service_critical_sound=critical.wav
#service_warning_sound=warning.wav
#service_unknown_sound=warning.wav
#normal_sound=noproblem.wav
### dont allow to change author name while submitting comment
lock_author_names=0
# vi /usr/local/nagios/etc/nagios.cfg
### Change log path
log_file=/usr/local/nagios/var/nagios.log
## Add your specific cfg file of server to monitor
cfg_file=/usr/local/nagios/etc/objects/myserver.cfg
## Add you dir contain your server cdf file to monitor all
cfg_dir=/usr/local/nagios/etc/my-lnx-servers
## Host update interval in sec
status_update_interval=5
## Change nagios user & Group (NOT Recomended)
nagios_user=nagios
nagios_group=nagios
## Add you own command file
check_external_commands=0
command_check_interval=-1
command_file=/usr/local/nagios/var/rw/nagios.cmd <<--As you want
external_command_buffer_slots=4096
## Nagios store his pid at
lock_file=/usr/local/nagios/var/nagios.lock
##### agios Log rotation
# n = None - don't rotate the log
# h = Hourly rotation (top of the hour)
# d = Daily rotation (midnight every day)
# w = Weekly rotation (midnight on Saturday evening)
# m = Monthly rotation (midnight last day of month)
log_rotation_method=d
log_archive_path=/usr/local/nagios/var/archives
##Use syslog to do so
use_syslog=1
##### MAXIMUM SERVICE CHECK SPREAD in munute
max_service_check_spread=30
### HOST FRESHNESS CHECK OPTION (Nagios chek periodically freshmess of hosts)
check_host_freshness=1
host_freshness_check_interval=20
### Change date format
# us (MM-DD-YYYY HH:MM:SS)
# euro (DD-MM-YYYY HH:MM:SS)
# iso8601 (YYYY-MM-DD HH:MM:SS)
# strict-iso8601 (YYYY-MM-DDTHH:MM:SS)
date_format=us
##Enable perl support
##not in use if u have not compliled nagios with perl
p1_file=/usr/local/nagios/bin/p1.pl
###disable =0
enable_embedded_perl=1
# ADMINISTRATOR EMAIL/PAGER ADDRESSES
admin_email=nagios@localhost
# DEBUG LEVEL
# -1 = Everything
# 0 = Nothing
# 1 = Functions
# 2 = Configuration
# 4 = Process information
# 8 = Scheduled events
# 16 = Host/service checks
# 32 = Notifications
# 64 = Event broker
# 128 = External commands
# 256 = Commands
# 512 = Scheduled downtime
# 1024 = Comments
debug_level=0
# DEBUG VERBOSITY
# Values: 0 = Brief output
# 1 = More detailed
# 2 = Very detailed
debug_verbosity=1
# DEBUG FILE
debug_file=/usr/local/nagios/var/nagios.debug
### Check Your Config files for error
# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
# /etc/init.d/nagios start
########## Tunnning
1> Want any new updates to be check every minute (Default 5 minute)
# vi /usr/local/nagios/etc/objects/templates.cfg
check_interval 1 ; Actively check the host every 1 minutes
2> I want to check default ping of my server
check_command check-ping
3> I want to use all config waht i defined in my template linux-server to windows-server
Add below line in windows.cfg
use linux-server
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
# Faced any problem Feedback in above contact me
#===============================Scratch===============================#
# AND Many More .....................Linux is Endless #
#========================== Hope you Liked IT ========================#
# NAGIOS -- BY Shirish Shukla #
# RHC Engineer 2010 #
# shirish.linux@gmail.com #
# shirishlinux.blogspot.com #
# "Give Respect To Time One Day At Right Time, Time Will Respect You" #
#=====================================================================#
# TRy Hard theres nothing that are un-achievable by HARDdd-WORKkk #
#=====================================================================#
Nagios® is a system and network monitoring application. (Description from some source)
Some of the many features of Nagios® include:
- Monitoring of network services (SMTP, POP3, HTTP, NNTP, PING, etc.)
- Monitoring of host resources (processor load, disk usage, etc.)
- Simple plugin design that allows users to easily develop their own service checks
- Parallelized service checks
- Ability to define network host hierarchy using "parent" hosts, allowing detection of and distinction between hosts that are down and those that are unreachable
- Contact notifications when service or host problems occur and get resolved (via email, pager, or user-defined method)
- Ability to define event handlers to be run during service or host events for proactive problem resolution
- Automatic log file rotation
- Support for implementing redundant monitoring hosts
- Optional web interface for viewing current network status, notification and problem history, log file, etc.
PREREQUISITE:
=============
Apache (https)
gcc libraries
Nagios Tols:
============
# mkdir /root/SW
wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.2.3.tar.gz
wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.11.tar.gz
##Adduser and groups
# useradd -m nagios
# passwd nagios
# groupadd nagios <--Just for confirmation
# usermod -G nagios nagios <--Just for confirmation
# groupadd nagcmd
# usermod -a -G nagcmd nagios
# usermod -a -G nagcmd wwwrun <--Not Require(optional) need to create group wwwrun before
INSTALLATION:
=============
# cd /root/SW
# tar xzf nagios-3.2.3.tar.gz
# cd nagios-3.2.3
# ./configure --with-command-group=nagcmd
# make all
# make install
# make install-init
# make install-config
# make install-commandmode
# vi /usr/local/nagios/etc/objects/contacts.cfg
At line
35: Change --> email youadmin-mail-id
# make install-webconf
# htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
Note: if you want to change admin "nagiosadmin" name chanhe all in "/usr/local/nagios/etc/cgi.cfg" file too .
##Start httpd(Apache)
# /etc/init.d/httpd restart
# chkconfig httpd on
### Instal nagios-plugin
# tar xzf nagios-plugins-1.4.11.tar.gz
# cd nagios-plugins-1.4.11
# ./configure --with-nagios-user=nagios --with-nagios-group=nagios
# make
# make install
#### Start nagios
# /etc/init.d/nagios restart
# chkconfig nagios on
###### How to OPERATE
# Webadmin panel
http://your-ip/nagios/ < Provide above seted id & password---
EG: To Check All Hosts without options You can set it to your default apache hosting file for your monitoring purpose
http://192.168.8.10/nagios/cgi-bin/status.cgi?host=all
### Want default as above to your ip
# vi /var/www/html/index.html
<html>
<head>
<META HTTP-EQUIV="Refresh"
CONTENT="2; URL=http://192.168.8.10/nagios/cgi-bin/status.cgi?host=all">
</head>
<body bgcolor="pink">
<br />
<br />
<br />
<br />
<br />
<br />
<Center>
<h1> <font color="green"> Wait 2 Sec.............</font></h1>
</body>
</html>
##Save and relaod httpd
Now just type your ip on browser and <---Enter
####################################################
#################Add your servers to monitor ############
###################################################
# cd /usr/local/nagios <-- Nagios default files
# cd /usr/local/nagios/etc/objects <<-- All cfg file server's config file to monitor
# cat /usr/local/nagios/etc/nagios.cfg <<<-- NAgios main config file
# vi /usr/local/nagios/etc/nagios.cfg <<<--Add your own config dirs where your all server cfg file will reside
==>Add below line
cfg_dir=/usr/local/nagios/etc/lnx-servers
# cd usr/local/nagios/etc/lnx-servers
# vi my-samba_server
##############################################################
############# HOST DEFINITION ###############################
##############################################################
# HOST DEFINITION
define host{
use linux-server ; defined in template
host_name scratch-samba.8.10
alias samba-server
address 192.168.8.10
}
# HOST GROUP DEFINITION (Optional, you can add multiple members to your already created group seperated by comma)
define hostgroup{
hostgroup_name my-servers ; The name of the hostgroup
alias MY Linux Servers ; Long name of the group
members scratch-samba.8.10 ; Comma separated list of hosts that belong to this group
}
##############################################################
####################### SERVICE DEFINITIONS #################
##############################################################
###Ping check
define service{
use local-service ; defined in template /usr/local/nagios/etc/objects/templates.cfg
host_name scratch-samba.8.10
service_description PING
check_command check_ping!100.0,20%!500.0,60% ; Defined in commnd file /usr/local/nagios/etc/objects/commands.cfg
}
### SSH service Check
define service{
use local-service
host_name scratch-samba.8.10
service_description SSH
check_command check_ssh!-t 5 -r "OpenSSH_4.2"
}
define service{
use local-service ; Name of service template to use
host_name scratch-samba.8.10
service_description samba
check_command check_http
}
define service{
use local-service ; Inherit default values from a template
host_name scratch-samba.8.10
service_description SMTP
check_command check_smtp
}
#check port 139
define service{
use local-service ; Inherit default values from a template
host_name scratch-samba.8.10
service_description Samba_port139
check_command check_tcp!139
}
##########################################################################
## Nagios Fine tunning file (Do not replace original line comment that then add below line)
# vi /usr/local/nagios/etc/cgi.cfg
### Don't show pending satate of service
use_pending_states=0
### Disable webadmin auth
use_authentication=0
### Want to authorize an user shukla to have all admin rights for weadmin panel
authorized_for_system_information=shukla
authorized_for_configuration_information=shukla
authorized_for_system_commands=shukla
authorized_for_all_hosts=shukla
authorized_for_all_services=shukla
authorized_for_all_service_commands=shukla
authorized_for_all_host_commands=shukla
### Want default guest user, WARN: dont' allow this
default_user_name=guest
### Want an read only user
#htpasswd -c /usr/local/nagios/etc/htpasswd.users user1
#using command add more users
authorized_for_read_only=user1
### Want to change ping syntax
ping_syntax=/bin/ping -n -U -c 5 $HOSTADDRESS$
### Refresh rate of cgi (status, statusmap, extinfo, and outages) in sec
refresh_rate=60
### Want to play sound on webpanel if error occour on network
## Plcace your audio file at
# /usr/local/nagios/share/media
##Un commen tbelow lines after adding resp audio files
#host_unreachable_sound=hostdown.wav
#host_down_sound=hostdown.wav
#service_critical_sound=critical.wav
#service_warning_sound=warning.wav
#service_unknown_sound=warning.wav
#normal_sound=noproblem.wav
### dont allow to change author name while submitting comment
lock_author_names=0
# vi /usr/local/nagios/etc/nagios.cfg
### Change log path
log_file=/usr/local/nagios/var/nagios.log
## Add your specific cfg file of server to monitor
cfg_file=/usr/local/nagios/etc/objects/myserver.cfg
## Add you dir contain your server cdf file to monitor all
cfg_dir=/usr/local/nagios/etc/my-lnx-servers
## Host update interval in sec
status_update_interval=5
## Change nagios user & Group (NOT Recomended)
nagios_user=nagios
nagios_group=nagios
## Add you own command file
check_external_commands=0
command_check_interval=-1
command_file=/usr/local/nagios/var/rw/nagios.cmd <<--As you want
external_command_buffer_slots=4096
## Nagios store his pid at
lock_file=/usr/local/nagios/var/nagios.lock
##### agios Log rotation
# n = None - don't rotate the log
# h = Hourly rotation (top of the hour)
# d = Daily rotation (midnight every day)
# w = Weekly rotation (midnight on Saturday evening)
# m = Monthly rotation (midnight last day of month)
log_rotation_method=d
log_archive_path=/usr/local/nagios/var/archives
##Use syslog to do so
use_syslog=1
##### MAXIMUM SERVICE CHECK SPREAD in munute
max_service_check_spread=30
### HOST FRESHNESS CHECK OPTION (Nagios chek periodically freshmess of hosts)
check_host_freshness=1
host_freshness_check_interval=20
### Change date format
# us (MM-DD-YYYY HH:MM:SS)
# euro (DD-MM-YYYY HH:MM:SS)
# iso8601 (YYYY-MM-DD HH:MM:SS)
# strict-iso8601 (YYYY-MM-DDTHH:MM:SS)
date_format=us
##Enable perl support
##not in use if u have not compliled nagios with perl
p1_file=/usr/local/nagios/bin/p1.pl
###disable =0
enable_embedded_perl=1
# ADMINISTRATOR EMAIL/PAGER ADDRESSES
admin_email=nagios@localhost
# DEBUG LEVEL
# -1 = Everything
# 0 = Nothing
# 1 = Functions
# 2 = Configuration
# 4 = Process information
# 8 = Scheduled events
# 16 = Host/service checks
# 32 = Notifications
# 64 = Event broker
# 128 = External commands
# 256 = Commands
# 512 = Scheduled downtime
# 1024 = Comments
debug_level=0
# DEBUG VERBOSITY
# Values: 0 = Brief output
# 1 = More detailed
# 2 = Very detailed
debug_verbosity=1
# DEBUG FILE
debug_file=/usr/local/nagios/var/nagios.debug
############################ BASIC Checking #############################
### Check Your Config files for error
# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
# /etc/init.d/nagios start
########## Tunnning
1> Want any new updates to be check every minute (Default 5 minute)
# vi /usr/local/nagios/etc/objects/templates.cfg
check_interval 1 ; Actively check the host every 1 minutes
2> I want to check default ping of my server
check_command check-ping
3> I want to use all config waht i defined in my template linux-server to windows-server
Add below line in windows.cfg
use linux-server
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
# Faced any problem Feedback in above contact me
#===============================Scratch===============================#
# AND Many More .....................Linux is Endless #
#========================== Hope you Liked IT ========================#
# NAGIOS -- BY Shirish Shukla #
# RHC Engineer 2010 #
# shirish.linux@gmail.com #
# shirishlinux.blogspot.com #
# "Give Respect To Time One Day At Right Time, Time Will Respect You" #
#=====================================================================#
# TRy Hard theres nothing that are un-achievable by HARDdd-WORKkk #
#=====================================================================#
Great Looking for script to automate installing and adding servers in nagios... Hope you could help me in this..
ReplyDelete--Jay Garg
##################
ReplyDelete1> Trouble shooting
http:/your-ip/nagios <-- Access forbidden /nagios/
Solution# Some php files missing
# Yum -y install php
2> While REstarting Apache [/etc/init.d/httpd restart ] Getting error as
Invalid command 'AuthUserFile' ......
Solution: # yum erase httpd*
# yum -y install httpd
* I know it's not a recommended solution but instead of asking you to check the logs and correct the error by adding modules and all
I recommended above .
Definitely Garg I will help you but right moment am bit busy in some work will look for it in coming time .
ReplyDeleteHI sirish
ReplyDeleteThanks For Sharing Can you guide me how can we monitor windows hosts with snmp ..... :-)
Nice blog shirish
ReplyDeletevirtual servers same configured in nagios?
35: Change --> email youadmin-mail-id
ReplyDeleteplease explain it how to in this line.