Nagios監(jiān)控實例部署

Nagios是一款企業(yè)級開源軟件，專注于監(jiān)控服務器上服務是否正常，不生成圖形，提供報警機制，郵件或者短信發(fā)送監(jiān)控狀態(tài)，它通過各種插件實現(xiàn)不同的功能。

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Nagios 監(jiān)控平臺主程序

Nagios-plugins 必選插件

NRPE 監(jiān)控遠程服務器的主機資源

NSClient++ 用于監(jiān)控Windows主機

NDOUtils 將數(shù)據(jù)寫入數(shù)據(jù)庫

實例應用：

1 監(jiān)控快速部署

監(jiān)控需要安裝http php nagios nagios-plugins NRPE軟件包

yum install -y gd gd-devel openssl openssl-devel httpd php gcc glibc glib-common make wget

net-snmp

setenforce 0

iptables -F

安裝nagios 源碼包下載安裝

wget http://sourceforge.net/projects/nagios/files/nagios-3.x/nagios-3.5.0/nagios-3.5.0.tar.gz/download

groupadd nagios

useradd -g nagios nagios

tar -zxf nagios-3.5.0.tar.gz -C /usr/src/

cd /usr/src/nagios

./configure --with-nagios-user=nagios --with-nagios-group=nagios

make all

make install

make install-init #安裝啟動腳本

make install-commandmode #安裝與配置目錄權限

make install-config #安裝配置文件模板

make install-webconf #web監(jiān)控界面配置

安裝nagios-plugins和nrpe

wget http://nchc.dl.sourceforge.net/project/nagiosplug/nagiosplug/1.4.16/nagios-plugins-1.4.16.tar.gz

tar -zxf nagios-plugins-1.4.16.tar.gz -C /usr/src/

cd /usr/src/nagios-plugins-1.4.16

./configure --prefix=/usr/local/nagios/

make && make install

wget wget http://nchc.dl.sourceforge.net/project/nagios/nrpe-2.x/nrpe-2.14/nrpe-2.14.tar.gz

tar -zxf nrpe-2.14.tar.gz -C /usr/src/

cd /usr/src/nrpe-2.14

./configure

make all

make install-plugin

make install-daemon

make install-daemon-config

chown -R nagions.nagions /usr/local/nagios

創(chuàng)建賬戶信息

htpasswd -c /usr/local/nagions/etc/htpasswd.users tomcat

iptables -I INPUT -p tcp --dport 80 -j ACCEPT

service iptables save

啟動服務

service httpd start

/etc/init.d/nagios start

chkconfig httpd on

chkconfig --add nagios

chkconfig nagios on

2 修改配置文件

nagios的配置文件較多，主要位于/usr/local/nagios/etc 下

nagios.conf 主配置文件

nrpe.cfg 遠程監(jiān)控配置文件

cgi.conf CGI配置文件

commands.cfg 命令定義文件

contacts.cfg 定義聯(lián)系人文件

timepreriods.cfg 時間周期定義文件

tempaltes.cfg 對象定義參考模板

localhost.cfg 監(jiān)控本機配置模板

printer.cfg 監(jiān)控打印機模板

switch.cfg 監(jiān)控交換模板

windows.cfg 監(jiān)控Windows配置模板

很多配置文件無需修改可以直接使用

修改主配置文件nagios.cfg,主要是用cfg_file配置加載其他配置文件。

vim /usr/local/nagios/etc/nagios.cfg

cfg_file=/usr/local/nagios/etc/objects/commands.cfg

cfg_file=/usr/local/nagios/etc/objects/contacts.cfg

cfg_file=/usr/local/nagios/etc/objects/templates.cfg

cfg_file=/usr/local/nagios/etc/objects/timeperiods.cfg

cfg_file=/usr/local/nagios/etc/objects/localhost.cfg

cfg_file=/usr/local/nagios/etc/web1.cfg

cfg_file=/usr/local/nagios/etc/web2.cfg

修改CGI配置文件cgi.cfg,添加tomcat賬戶進來

vim /usr/local/nagios/etc/cgi.cfg

default_user_name=tomcat

authorized_for_system_information=nagiosadmin,tomcat

authorized_for_configuration_information=nagiosadmin,tomcat

authorized_for_system_commands=nagiosadmin,tomcat

authorized_for_all_services=nagiosadmin,tomcat

authorized_for_all_hosts=nagiosadmin,tomcat

authorized_for_all_service_commands=nagiosadmin,tomcat

authorized_for_all_host_commands=nagiosadmin,tomcat

修改命令配置文件command.cfg,定義命令實現(xiàn)的方式，如郵件報警，使用工具，內(nèi)容格式等。

vim /usr/local/nagios/etc/objects/commands.cfg

define command{

command_name check_nrpe

command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -t 30 -c $ARG1$

}

define command{

command_name check_nrpe_args

command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -t 30 -c $ARG1$ -a $ARG2$

}

修改聯(lián)系人配置文件contacts.cfg 報警的聯(lián)系人及聯(lián)系方式

define contact{

contact_name nagiosadmin

use generic-contact

alias Nagios Admin

email yourname@domain.com

}

修改報警時間周期timeperiods.cfg

vim /usr/local/nagios/etc/objects/timeperiods.cfg

define timeperiods{

timeperiod_name 24x7 #監(jiān)控所有時間段（7＊24小時）

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
}

修改本機的配置localhost.cfg

define host{

use linux-server

host_name duangr-1

alias duangr-1

address 192.168.56.10

}

define service{

use local-service

host_name duangr-1

service_description Host Alive

check_command check-host-alive

}

define service{

use local-service

host_name duangr-1

service_description Users

check_command check_local_users!20!50

}

define service{

use local-service

host_name duangr-1

service_description CPU

check_command check_local_load!5.0,4.0,3.0!10.0,6.0,4.0

}

define service{

use local-service

host_name duangr-1

service_description Disk Root

check_command check_local_disk!20%!10%!/

}

define service{

use local-service

host_name duangr-1

service_description Disk Home

check_command check_local_disk!20%!10%!/export/home

}

define service{

use local-service

host_name duangr-1

service_description Zombie Procs

check_command check_local_procs!5!10!Z

}

define service{

use local-service

host_name duangr-1

service_description Total Procs

check_command check_local_procs!250!400!RSZDT

}

define service{

use local-service

host_name duangr-1

service_description Swap Usage

check_command check_local_swap!20!10

}

修改模板文件templates.cfg

vi /usr/local/nagios/etc/objects/templates.cfg

#聯(lián)系人模板generic-contact

define contact{

name generic-contact

service_notification_period 24x7

host_notification_period 24x7

service_notification_options w,u,c,r,f,s

host_notification_options d,u,r,f,s

service_notification_commands notify-service-by-email

host_notification_commands notify-host-by-email

}

#定義generic-host主機模板

define host{

name generic-host

notifications_enabled 1

event_handler_enabled 1

flap_detection_enabled 1

failure_prediction_enabled 1

process_perf_data 1

retain_status_information 1

retain_nonstatus_information 1

notification_period 24x7

}

#定義Linux主機模板

define host{

name linux-server

use generic-host

check_period 24x7

check_interval 5

retry_interval 1

max_check_attempts 10

check_command check-host-alive

notification_period workhours

notification_interval 120

notification_options d,u,r

contact_groups admins

}

創(chuàng)建遠程監(jiān)控web1.cfg

vim /usr/local/nagios/etc/web1.cfg

define host{
       use                     linux-server
       host_name               duangr-2
       alias                   duangr-2
       address                 192.168.56.11
       }

define service{
       use                             local-service
       host_name                       duangr-2
       service_description             Host Alive
       check_command                   check-host-alive
       }
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             Users
       check_command                   check_nrpe_args!check_users!5 10
       }
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             CPU
       check_command                   check_nrpe_args!check_load!15,10,5 30,25,20
       }
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             Disk Root
       check_command                   check_nrpe_args!check_disk!20% 10% /
       }
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             Disk /export/home
       check_command                   check_nrpe_args!check_disk!20% 10% /export/home
       }
define service{
      use                             local-service
      host_name                       duangr-2
      service_description             Procs Zombie
      check_command                   check_nrpe_args!check_procs!5 10 Z
      }
define service{
      use                             local-service
      host_name                       duangr-2
      service_description             Procs Total
      check_command                   check_nrpe_args!check_procs_args!"-w400 -c600"      }
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             Swap Usage
       check_command                   check_nrpe_args!check_swap!20% 10%
       }

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;  下面是一些常用進程的監(jiān)控,主要是云平臺相關進程
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; 監(jiān)控crond進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: crond
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Ccrond"       }
;; 監(jiān)控zookeeper進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: QuorumPeerMain
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.quorum.QuorumPeerMain"       }
;;監(jiān)控storm的從節(jié)點進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: supervisor
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Cjava -adaemon.supervisor"       }
;; 監(jiān)控storm的主節(jié)點進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: nimbus
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Cjava -adaemon.nimbus"       }
;; 監(jiān)控MetaQ進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: MetaQ
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Cjava -ametamorphosis-server-w"       }
;; 監(jiān)控redis進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: redis-server
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Credis-server"       }
;; 監(jiān)控hadoop主節(jié)點NameNode進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: NameNode
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.namenode.NameNode"       }
;; 監(jiān)控hadoop主節(jié)點SecondaryNameNode進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: SecondaryNameNode
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.namenode.SecondaryNameNode"       }
;; 監(jiān)控hadoop主節(jié)點ResourceManager進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: ResourceManager
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.resourcemanager.ResourceManager"       }
;; 監(jiān)控hadoop從節(jié)點DataNode進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: DataNode
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.datanode.DataNode"       }
;;監(jiān)控hadoop從節(jié)點NodeManager進程
define service{
       use                             local-service
       host_name                       duangr-2
       service_description             PS: NodeManager
       check_command                   check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.nodemanager.NodeManager"       }

由于duangr-2是遠程主機,因此使用check_nrpe_args命令來監(jiān)控.

/etc/init.d/nagios restart

快速定位配置文件問題所在命令

/usr/local/nagios/bin/nagios -V /usr/local/nagios/etc/nagios.cfg

3 被監(jiān)控機安裝軟件 nagios-plugin nrpe

yum install -y openssl openssl-devel

groupadd nagios

useradd -g nagios -s /sbin/nologin nagios

tar -zxf nagios-plugins-2.1.6.tar.gz -C /usr/src/

cd /usr/src/nagios-plugins-2.1.6

./configure --prefix=/usr/local/nagios/ --with-nagios-user=nagios --with-nagios-group=nagios

make && make install

tar -zxf nrpe-2.14.tar.gz -C /usr/src/

cd /usr/src/nrpe-2.14

./configure

make all

make install-plugin

make install-daemon

make install-daemon-config

修改客戶端的NRPE配置文件

command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10

command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20

command[check_sda2]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/sda2

command[check_swap]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/shm

command[check_home]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/mapper/VolGroup00-LogVol00

command[check_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10 -s Z

command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 200 -c 300

command[check_ping81]=/usr/local/nagios/libexec/check_ping -H 10.155.0.1 -w 100.0,20% -c 500.0,60%#

command[check_hda1]=/usr/local/nagios/libexec/check_disk -w 20 -c 10 -p /dev/hda1

/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d

echo "/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d" >> /etc/rc.local

netstat -lnupt |grep 5666

iptables -I INPUT -p tcp --dport 5666 -j ACCEPT

service iptables save

檢查監(jiān)控命令配置是否ok

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_users -a 5 10

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_load -a 15,10,5 30,25,20

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_disk -a 20% 10% /

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_procs -a 200 400 RSZDT

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_swap -a 20% 10%

沒有問題就可以用瀏覽器訪問nagios了

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Nagios監(jiān)控實例部署

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