Nagios 監控執行個體部署

Nagios是一款企業級開源軟體，專注于監控伺服器上服務是否正常，不生成圖形，提供報警機制，郵件或者短信發送監控狀态，它通過各種插件實作不同的功能。

Nagios 監控平台主程式

Nagios-plugins 必選插件

NRPE 監控遠端伺服器的主機資源

NSClient++ 用于監控Windows主機

NDOUtils 将資料寫入資料庫

執行個體應用：

1 監控快速部署

監控需要安裝http php nagios nagios-plugins NRPE軟體包

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 源碼包下載下傳安裝

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 #安裝配置檔案模闆

make install-webconf #web監控界面配置

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 install-plugin

make install-daemon

make install-daemon-config

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

建立賬戶資訊

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 修改配置檔案

nagios的配置檔案較多，主要位于/usr/local/nagios/etc 下

nagios.conf 主配置檔案

nrpe.cfg 遠端監控配置檔案

cgi.conf CGI配置檔案

commands.cfg 指令定義檔案

contacts.cfg 定義聯系人檔案

timepreriods.cfg 時間周期定義檔案

tempaltes.cfg 對象定義參考模闆

localhost.cfg 監控本機配置模闆

printer.cfg 監控列印機模闆

switch.cfg 監控交換模闆

windows.cfg 監控Windows配置模闆

很多配置檔案無需修改可以直接使用

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

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配置檔案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

修改指令配置檔案command.cfg,定義指令實作的方式，如郵件報警，使用工具，内容格式等。

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

define command{

command_name check_nrpe

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

}

command_name check_nrpe_args

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

修改聯系人配置檔案contacts.cfg 報警的聯系人及聯系方式

define contact{

contact_name nagiosadmin

use generic-contact

alias Nagios Admin

email [email protected]

修改報警時間周期timeperiods.cfg

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

define timeperiods{

timeperiod_name 24x7 #監控所有時間段（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

service_description Users

check_command check_local_users!20!50

service_description CPU

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

service_description Disk Root

check_command check_local_disk!20%!10%!/

service_description Disk Home

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

service_description Zombie Procs

check_command check_local_procs!5!10!Z

service_description Total Procs

check_command check_local_procs!250!400!RSZDT

service_description Swap Usage

check_command check_local_swap!20!10

修改模闆檔案templates.cfg

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

#聯系人模闆generic-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主機模闆

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主機模闆

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

建立遠端監控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

service_description Users

check_command check_nrpe_args!check_users!5 10

service_description CPU

check_command check_nrpe_args!check_load!15,10,5 30,25,20

service_description Disk Root

check_command check_nrpe_args!check_disk!20% 10% /

service_description Disk /export/home

check_command check_nrpe_args!check_disk!20% 10% /export/home

use local-service

host_name duangr-2

service_description Procs Zombie

check_command check_nrpe_args!check_procs!5 10 Z

}

service_description Procs Total

check_command check_nrpe_args!check_procs_args!"-w400 -c600" }

service_description Swap Usage

check_command check_nrpe_args!check_swap!20% 10%

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;; 下面是一些常用程序的監控,主要是雲平台相關程序

;; 監控crond程序

service_description PS: crond

check_command check_nrpe_args!check_procs_args!"-c1:1 -Ccrond" }

;; 監控zookeeper程序

service_description PS: QuorumPeerMain

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.quorum.QuorumPeerMain" }

;;監控storm的從節點程序

service_description PS: supervisor

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -adaemon.supervisor" }

;; 監控storm的主節點程序

service_description PS: nimbus

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -adaemon.nimbus" }

;; 監控MetaQ程序

service_description PS: MetaQ

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -ametamorphosis-server-w" }

;; 監控Redis程序

service_description PS: redis-server

check_command check_nrpe_args!check_procs_args!"-c1:1 -Credis-server" }

;; 監控hadoop主節點NameNode程序

service_description PS: NameNode

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.namenode.NameNode" }

;; 監控hadoop主節點SecondaryNameNode程序

service_description PS: SecondaryNameNode

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.namenode.SecondaryNameNode" }

;; 監控hadoop主節點ResourceManager程序

service_description PS: ResourceManager

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.resourcemanager.ResourceManager" }

;; 監控hadoop從節點DataNode程序

service_description PS: DataNode

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.datanode.DataNode" }

;;監控hadoop從節點NodeManager程序

service_description PS: NodeManager

check_command check_nrpe_args!check_procs_args!"-c1:1 -Cjava -aserver.nodemanager.NodeManager" }

由于duangr-2是遠端主機,是以使用check_nrpe_args指令來監控.

/etc/init.d/nagios restart

快速定位配置檔案問題所在指令

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

3 被監控機安裝軟體 nagios-plugin nrpe

yum install -y openssl openssl-devel

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

修改用戶端的NRPE配置檔案

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

檢查監控指令配置是否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%

沒有問題就可以用浏覽器通路nagios了

本文轉自super李導51CTO部落格，原文連結：http://blog.51cto.com/superleedo/1891718 ，如需轉載請自行聯系原作者

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