【移动应用开发技术】【Nagios】Linux监控软件安装与配置（二）

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【移动应用开发技术】【Nagios】Linux监控软件安装与配置（二）

一、安装扩展源[root@www~]#rpm-ivh/epel/6/i386/epel-release-6-8.noarch.rpm二、安装Nagios相关软件包[root@www~]#yum-yinstallhttpdnagiosnagios-pluginsnagios-plugins-allnrpenagios-plugins-nrpe三、设置nagios后台登录用户名和密码[root@www

~]#

htpasswd

-c

/etc/nagios/passwd

nagiosadmin

#这里指定用户名为nagiosadmin，而不是其他

New

password:

Re-type

new

password:

Adding

password

for

user

nagiosadmin四、检查Nagios配置[root@www

~]#

nagios

-v

/etc/nagios/nagios.cfg

Nagios

Core

3.5.1

(c)

2009-2011

Nagios

Core

Development

Team

and

Community

Contributors

(c)

1999-2009

Ethan

Galstad

Last

Modified:

08-30-2013

License:

GPL

Website:

Reading

configuration

data...

Read

main

config

file

okay...

Processing

object

config

file

'/etc/nagios/objects/commands.cfg'...

Processing

object

config

file

'/etc/nagios/objects/contacts.cfg'...

Processing

object

config

file

'/etc/nagios/objects/timeperiods.cfg'...

Processing

object

config

file

'/etc/nagios/objects/templates.cfg'...

Processing

object

config

file

'/etc/nagios/objects/localhost.cfg'...

Processing

object

config

directory

'/etc/nagios/conf.d'...

Read

object

config

files

okay...

Running

pre-flight

check

configuration

data...

Checking

services...

Checked

services.

Checking

hosts...

Checked

hosts.

Checking

host

groups...

Checked

host

groups.

Checking

service

groups...

Checked

service

groups.

Checking

contacts...

Checked

contacts.

Checking

contact

groups...

Checked

contact

groups.

Checking

service

escalations...

Checked

service

escalations.

Checking

service

dependencies...

Checked

service

dependencies.

Checking

host

escalations...

Checked

host

escalations.

Checking

host

dependencies...

Checked

host

dependencies.

Checking

commands...

Checked

commands.

Checking

time

periods...

Checked

time

periods.

Checking

for

circular

paths

between

hosts...

Checking

for

circular

host

and

service

dependencies...

Checking

global

event

handlers...

Checking

obsessive

compulsive

processor

commands...

Checking

misc

settings...

Total

Warnings:

Total

Errors:

Things

look

okay

serious

problems

were

detected

during

the

pre-flight

check五、启动Nagios和http服务[root@www

~]#

/etc/init.d/httpd

start

Starting

httpd:

[

]

[root@www

~]#

/etc/init.d/nagios

start

Starting

nagios:

done.六、浏览器访问七、Nagios添加被监控客户端主机1、安装Nagios服务[root@sh

~]#

rpm

-ivh

epel-release-6-8.noarch.rpm

[root@sh

~]#

yum

-y

install

nagios-plugins

nagios-plugins-all

nrpe

nagios-plugins-nrpe2、修改/etc/nagios/nrpe.cfg文件[root@sh~]#vim/etc/nagios/nrpe.cfg

allowed_hosts=,1

#添加nagios服务端IP

dont_blame_nrpe=1

#0改为13、启动nrpe[root@sh

~]#

/etc/init.d/nrpe

start

Starting

nrpe:

[

]4、Nagios服务端添加被监控客户端主机[root@www

~]#

/etc/nagios/conf.d/

[root@www

conf.d]#

[root@www

conf.d]#

vim

51.cfg

define

host{

use

linux-server

host_name

alias

1.251

address

}

define

service{

use

generic-service

host_name

service_description

check_ping

check_command

check_ping!100.0,20%!200.0,50%

max_check_attempts

normal_check_interval

}

define

service{

use

generic-service

host_name

service_description

check_ssh

check_command

check_ssh

max_check_attempts

#当nagios检测到问题时，一共尝试检测5次都有问题才会告警，如果该数值为1，那么检测到问题立即告警

normal_check_interval

#重新检测的时间间隔，单位是分钟，默认是3分钟

notification_interval

#在服务出现异常后，故障一直没有解决，nagios再次对使用者发出通知的时间。如果你认为，所有的事件只需要一次通知就够了，可以把这里的选项设为0

}

define

service{

use

generic-service

host_name

service_description

check_http

check_command

check_http

max_check_attempts

normal_check_interval

}5、检查配置[root@wwwconf.d]#nagios-v/etc/nagios/nagios.cfg

6、重启nagios[root@www

conf.d]#

/etc/init.d/nagios

restart

Running

configuration

check...done.

Stopping

nagios:

done.

Starting

nagios:

done.7、查看效果八、添加nrpe支持的监控服务1、添加nrpe服务[root@www

~]#

vim

/etc/nagios/objects/commands.cfg

################################################################################

'notify-host-by-email'

command

definition

define

command{

command_name

notify-host-by-email

command_line

/usr/bin/printf

"%b"

"*****

Nagios

*****\n\nNotification

Type:

$NOTIFICATIONTYPE$\nHost:

$HO

STNAME$\nState:

$HOSTSTATE$\nAddress:

$HOSTADDRESS$\nInfo:

$HOSTOUTPUT$\n\nDate/Time:

$LONGDATETIME$\n"

/bin/mail

-s

"**

$NOTIFICATIONTYPE$

Host

Alert:

$HOSTNAME$

$HOSTSTATE$

**"

$CONTACTEMAIL$

}

'notify-service-by-email'

command

definition

define

command{

command_name

notify-service-by-email

command_line

/usr/bin/printf

"%b"

"*****

Nagios

*****\n\nNotification

Type:

$NOTIFICATIONTYPE$\n\nService

$SERVICEDESC$\nHost:

$HOSTALIAS$\nAddress:

$HOSTADDRESS$\nState:

$SERVICESTATE$\n\nDate/Time:

$LONGDATETIME$\n\nAd

ditional

Info:\n\n$SERVICEOUTPUT$\n"

/bin/mail

-s

"**

$NOTIFICATIONTYPE$

Service

Alert:

$HOSTALIAS$/$SERVICEDESC$

$SERVICESTATE$

**"

$CONTACTEMAIL$

}

define

command{

command_name

check_nrpe

#自定义check

command_line

$USER1$/check_nrpe

-H

$HOSTADDRESS$

-c

$ARG1$

}

################################################################################2、添加nrpe服务脚本[root@www

~]#

vim

/etc/nagios/conf.d/51.cfg

#check_nrpe

define

service{

use

generic-service

host_name

service_description

check_load

#监控负载

check_command

check_nrpe!check_load

max_check_attempts

normal_check_interval

}

define

service{

use

generic-service

host_name

service_description

check_disk_sda1

check_command

check_nrpe!check_hda1

#check_nrpe为前面自定义的模块名称，check_hda1为被监控主机/etc/nagios/nrpe.cfg文件里定义的脚本名称

max_check_attempts

normal_check_interval

}

#define

service{

#可以添加多块磁盘监控

use

generic-service

host_name

service_description

check_disk_hda2

check_command

check_nrpe!check_hda2

max_check_attempts

normal_check_interval

#}[root@www

~]#

nagios

-v

/etc/nagios/nagios.cfg

Total

Warnings:

Total

Errors:

Things

look

okay

serious

problems

were

detected

during

the

pre-flight

check3、被监控主机通过nrpe.cfg文件定义的脚本命令[root@sh

~]#

vim

/etc/nagios/nrpe.cfg

The

following

examples

use

hardcoded

command

arguments...

command[check_users]=/usr/lib64/nagios/plugins/check_users

-w

-c

command[check_load]=/usr/lib64/nagios/plugins/check_load

-w

15,10,5

-c

30,25,20

command[check_hda1]=/usr/lib64/nagios/plugins/check_disk

-w

20%

-c

10%

-p

/dev/sda1

#command[check_hda2]=/usr/lib64/nagios/plugins/check_disk

-w

20%

-c

10%

-p

/dev/hda2

command[check_zombie_procs]=/usr/lib64/nagios/plugins/check_procs

-w

-c

-s

command[check_total_procs]=/usr/lib64/nagios/plugins/check_procs

-w

150

-c

2004、重启服务[root@www

~]#

/etc/init.d/nagios

restart

Running

configuration

check...done.

Stopping

nagios:

done.

Starting

nagios:

done.[root@sh

~]#

/etc/init.d/nrpe

restart

Shutting

down

nrpe:

[

]

Starting

nrpe:

[

]5、web页面查看结果6、查看nagios日志文件[root@www

~]#

/var/log/nagios/

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【移动应用开发技术】【Nagios】Linux监控软件安装与配置（二）

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