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第 97 章 Nagios

目錄

97.1. Install
97.1.1. Nagios core
97.1.2. Monitor Client nrpe
97.1.3. Monitoring Windows Machines
97.1.4. PNP4Nagios 圖表插件
97.2. nagios
97.3. nrpe node
97.4. 配置 Nagios
97.4.1. authorized
97.4.2. contacts
97.4.3. hostgroups
97.4.4. generic-service
97.4.5. SOUND OPTIONS
97.4.6. SMS 短信
97.4.7. nrpe plugins
97.5. 配置監控設備
97.5.1. routers
97.5.2. host
97.5.3. service
97.5.3.1. http
97.5.3.2. mysql hosts
97.5.3.3. check_tcp
97.6. Nagios Plugins
97.6.1. check_ping
97.6.2. check_procs
97.6.3. check_users
97.6.4. check_http
97.6.5. check_mysql
97.6.5.1. check_mysql
97.6.5.2. mysql.cfg check_mysql_replication
97.6.5.3. nrpe.cfg check_mysql_replication
97.6.6. Disk
97.6.6.1. disk.cfg
97.6.6.2. check_disk
97.6.6.3. disk-smb.cfg
97.6.7. check_tcp
97.6.7.1. 連接埠檢查
97.6.7.2. Memcache
97.6.7.3. Redis
97.6.8. check_log
97.6.9. check_traffic
97.6.10. Nagios nrpe plugins
97.6.11. check_nt
97.6.12. nsca - Nagios Service Check Acceptor
97.6.13. jmx
97.7. FAQ
97.7.1. Macro Name
97.7.2. 插件開發手冊

homepage: http://www.nagios.org/

97.1. Install

97.1.1. Nagios core

Nagios 是一種開放原始碼監視軟件,它可以掃瞄主機、服務、網絡方面存在的問題。Nagios 與其他類似的包之間的主要區別在於,Nagios 將所有的信息簡化為“工作(working)”、“可疑的(questionable)”和“故障(failure)”狀態,並且 Nagios 支持由插件組成的非常豐富的“生態系統”。這些特性使得用戶能夠進行有效安裝,在此過程中無需過多地關心細節內容,只提供他們所需的信息即可。

install

$ sudo apt-get install nagios3 nagios-nrpe-plugin
		

add user nagiosadmin for nagios

$ sudo htpasswd -c /etc/nagios2/htpasswd.users nagiosadmin
New password:
Re-type new password:
Adding password for user nagiosadmin
		

Create a new nagcmd group for allowing external commands to be submitted through the web interface. Add both the nagios user and the apache user to the group.

$ groupadd nagcmd
$ sudo usermod -a -G nagcmd nagios
$ sudo usermod -a -G nagcmd www-data
$ cat /etc/group
nagcmd:x:1003:nagios,www-data
		

reload apache

$ sudo /etc/init.d/apache2 reload
 * Reloading web server config apache2                    [ OK ]
		

97.1.2. Monitor Client nrpe

		
nagios-nrpe-server --------> nagios core (nagios-nrpe-plugin)
		
		

nagios-nrpe-server 的功能是向伺服器發送監控數據, 而伺服器端通過nagios-nrpe-plugin接收監控數據。

sudo apt-get install nagios-nrpe-server nagios-plugins
		

/etc/nagios/nrpe.cfg

/etc/nagios/nrpe_local.cfg

$ sudo vim /etc/nagios/nrpe_local.cfg
allowed_hosts=172.16.1.2

command[check_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10
command[check_load]=/usr/lib/nagios/plugins/check_load -w 15,10,5 -c 30,25,20
command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z
command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c 200
command[check_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c 200
command[check_swap]=/usr/lib/nagios/plugins/check_swap -w 20% -c 10%
command[check_all_disks]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -e
command[check_disk_root]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /
command[check_disk_home]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /home
command[check_sda_iostat]=/usr/lib/nagios/plugins/check_iostat -d sda -w 100 -c 200
command[check_sdb_iostat]=/usr/lib/nagios/plugins/check_iostat -d sdb -w 100 -c 200
# command[check_uri_user]=/usr/lib/nagios/plugins/check_http -I 127.0.0.1 -p 80 -u http://example.com/test/ok.php
# command[check_mysql]=/usr/lib/nagios/plugins/check_mysql -H localhost -u root -ppassword test -P 3306
		

重啟後生效

/etc/init.d/nagios-nrpe-server restart
		

97.1.3. Monitoring Windows Machines

Nagios 可以監控windows伺服器,需要安裝下面軟件。

NSClient++

http://sourceforge.net/projects/nscplus

97.1.4. PNP4Nagios 圖表插件

http://www.pnp4nagios.org/