【移动应用开发技术】监控之nagios的安装部署（监控本机及其他主机的配置+警报机制的配置）

【移动应用开发技术】监控之nagios的安装部署（监控本机及其他主机的配置+警报机制的配置）

主机环境

redhat6.564位实验环境

服务端1ip

服务端2ip安装包

nagios-plugins-2.1.1.tar.gz

nagios-cn-3.2.3.tar.bz2gd-devel-2.0.35-11.el6.x86_64.rpmnrpe-2.15.tar.gz防火墙状态：关闭Selinux状态：Disabled1.安装nagios、监控本地及测试A）配置安装nagios及插件[root@sever1mnt]#lsnagios-plugins-2.1.1.tar.gz

nagios-cn-3.2.3.tar.bz2gd-devel-2.0.35-11.el6.x86_64.rpm[root@sever1mnt]#yuminstallgd-devel-2.0.35-11.el6.x86_64.rpm-y[root@sever1mnt]#useraddNagios

#创建系统用户ngios[root@sever1mnt]#usermod-a-GnagcmdNagios

#将nagios添加到nagcmd附加组[root@sever1mnt]#usermod-a-Gnagcmdapache

#将apache也添加到nagcnd附加组[root@sever1mnt]#idNagios

#查看uid=1001(nagios)gid=1001(nagios)groups=1001(nagios),1002(nagcmd)[root@sever1mnt]#idapacheuid=48(apache)gid=48(apache)groups=48(apache),1002(nagcmd)[root@sever1mnt]#tarjxfnagios-cn-3.2.3.tar.bz2

#解压[root@sever1mnt]#cdnagios-cn-3.2.3[root@sever1nagios-cn-3.2.3]#./configure--with-command-group=nagcmd

#配置[root@sever1nagios-cn-3.2.3]#makeall[root@sever1nagios-cn-3.2.3]#makeinstall

#安装[root@sever1nagios-cn-3.2.3]#makeinstall-init

#安装脚本文件[root@sever1nagios-cn-3.2.3]#makeinstall-config

#安装配置文件[root@sever1nagios-cn-3.2.3]#makeinstall-webconf[root@sever1nagios-cn-3.2.3]#cat/usr/local/nagios/etc/htpasswd.users#查看密码nagiosadmin:gCWSDnqEHR45c[root@sever1nagios-cn-3.2.3]#htpasswd-c/usr/local/nagios/etc/htpasswd.usersnagiosadmin

#修改密码Newpassword:Re-typenewpassword:Addingpasswordforusernagiosadmin[root@sever1nagios-cn-3.2.3]#cat/usr/local/nagios/etc/htpasswd.usersnagiosadmin:QNeDXoEuaEVuI[root@sever1nagios-cn-3.2.3]#/etc/init.d/httpdstart

#开启httpdStoppinghttpd:

[

OK

][root@sever1nagios-cn-3.2.3]#/usr/local/nagios/bin/nagios-v/usr/local/nagios/etc/nagios.cfg

#校验nagios的语法[root@sever1nagios-cn-3.2.3]#/etc/init.d/nagiosstart

#开启nagiosStartingnagios:done.#安装nagios插件[root@sever1mnt]#tarzxfnagios-plugins-2.1.1.tar.gz

#解压[root@sever1mnt]#cdnagios-plugins-2.1.1[root@sever1nagios-plugins-2.1.1]#./config--with-nagios-user=nagios--with-nagios-group=nagios

#配置[root@sever1nagios-plugins-2.1.1]#make

#编译[root@sever1nagios-plugins-2.1.1]#makeinstall

#安装B）添加本地服务

[root@server1etc]#vimnagios.cfg

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

#添加文件

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

#

Definitions

formonitoring

the

local

(Linux)

host

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

#标记localhost文件[root@server1etc]#cdobjects/[root@server1objects]#cp-plocalhost.cfghosts.cfg[root@server1objects]#cp-plocalhost.cfgservices.cfg[root@server1objects]#vimhosts.cfg

#主机配置文件define

host{

#主机

use

linux-server

#使用的模板

host_name

#主机名

alias

Manager

#别名

address

#ip

icon_p_w_picpath

server.gif

#下面几行是在拓扑图中的位置

statusmap_p_w_picpath

server.gd2

2d_coords

500,200

3d_coords

500,200,100

}

define

hostgroup{

hostgroup_name

linux-servers

;The

name

of

the

hostgroup

alias

Linux

Servers

;

Long

name

of

the

group

members

*

;

Comma

separated

list

of

hosts

that

belong

to

this

group

}[root@server1

objects]#vimservice.cfg

#服务配置文件define

servicegroup{

#服务组

servicegroup_name系统负荷检查

alias

负荷检查

,进程总数,,登录用户数,,根分区,,交换空间利用率

}

define

service{

#服务

use

local-service

#使用的模板

host_name

*

service_description

PING

check_command

check_ping!100.0,20%!500.0,60%

#要传的参数

}

define

service{

use

local-service

;

Name

of

service

template

to

use

host_name

service_description

根分区

check_command

check_local_disk!20%!10%!/

}

define

service{

use

local-service

;

Name

of

service

template

to

use

host_name

service_description

登录用户数

check_command

check_local_users!20!50

}

define

service{

use

local-service

;

Name

of

service

template

to

use

host_name

service_description

进程总数

check_command

check_local_procs!250!400!RSZDT

}

define

service{

use

local-service

;

Name

of

service

template

to

use

host_name

service_description

系统负荷

check_command

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

}

define

service{

use

local-service

;

Name

of

service

template

to

use

host_name

service_description

交换空间利用率

check_command

check_local_swap!20!10

}

define

service{

use

local-service

;

Name

of

service

template

to

use

host_name

service_description

SSH

check_command

check_tcp!22!1.0!10.0

notifications_enabled

0

}

define

service{

use

local-service

;

Name

of

service

template

to

use

host_name

service_description

HTTP

check_command

check_http

notifications_enabled

0

}[root@server1objects]#/etc/init.d/nagiosreload

#刷新Runningconfigurationcheck...done.Reloadingnagiosconfiguration...doneC）测试/Nagios2.远程监控服务端2mysql及测试

A）

安装mysql及添加授权服务端2[root@server2~]#yuminstallmysql-server-y

#安装mysql[root@server2~]#/etc/init.d/mysqldstart

#开启mysql[root@server2~]#mysql_secure_installation

#初始化，添加密码redhat[root@server2~]#mysql-predhat

#进入mysqlmysql>createdatabasenagdb;

#添加nagdb库QueryOK,1rowaffected(0.00sec)

mysql>grantselectonnagdb.*tonagios@''identifiedby'redhat';QueryOK,0rowsaffected(0.00sec)

#给nagios用户授予nagdb库的查看权限mysql>Bye

#退出

#服务端1，测试[root@server1objects]#./check_mysql-H-unagios-predhat-dnagdb

B）

将mysql服务（服务端2）添加到nagios(服务端1)服务端1[root@server1objects]#vimhosts.cfg

#定义主机define

host{

use

linux-server

#调用的模版

host_name

#主机名（command.cfg中要调用的参数）

alias

MYSQL

#别名

address

#ip

icon_p_w_picpath

server.gif

statusmap_p_w_picpath

server.gd2

#坐标的定义

2d_coords

400,200

3d_coords

400,200,100

}

[root@server1

objects]#

vim

services.cfg

#定义服务

####################check_mysql#######################

define

service{

use

local-service

host_name

（调用hosts.cfg中的host_name）

service_description

MYSQL

check_command

check_mysql!nagios!redhat!nagdb

#command.cfg中要调用的参数（命令名字！主机名！密码！数据库的名称）

}[root@server1objects]#vimcommands.cfg

#定义命令#

'check_mysql'

command

definition

define

command{

command_name

check_mysql

#命令的名字

command_line

$USER1$/check_mysql

-H

$HOSTADDRESS$

-u$ARG1$

-p

$ARG2$

-d

$ARG3$

#调用的脚本绝对路径

-H

主机名（调用hosts.cfg中的host_name）

-u

mysql的用户名

-p

用户密码

-d

数据库的名称

}[root@server1objects]#/usr/local/nagios/bin/nagios-v/usr/local/nagios/etc/nagios.cfg

#检查是否有语法错误TotalWarnings:0TotalErrors:

0

#无语法错误Thingslookokay-Noseriousproblemsweredetectedduringthepre-flightcheck[root@server1objects]#/etc/init.d/nagiosreload

#刷新Runningconfigurationcheck...done.Reloadingnagiosconfiguration...doneC）测试点击拓扑图，添加成功点击主机，查看两台主机点击服务，如图3.远程监控服务端2的根分区和用户数A）安装nagios插件及nrpe服务端2[root@server2mnt]#lsnagios-plugins-2.1.1.tar.gz

nrpe-2.15.tar.gz[root@server2mnt]#tarzxfnagios-plugins-2.1.1.tar.gz#解压plugins插件[root@server2mnt]#cdnagios-plugins-2.1.1[root@server2nagios-plugins-2.1.1]#./configure

[root@server2nagios-plugins-2.1.1]#make

[root@server2nagios-plugins-2.1.1]#makeinstall

[root@server2mnt]#cd/usr/local/nagios/

[root@server2nagios]#lsinclude

libexec

share[root@server2nagios]#useradd-u1001nagios

#创建nagios用户[root@server2nagios]#chownnagios.nagios*-R

#修改文件权限[root@server2nagios]#ll

#查看total12drwxr-xr-x2nagiosnagios4096Oct2310:50includedrwxr-xr-x2nagiosnagios4096Oct2310:50libexecdrwxr-xr-x3nagiosnagios4096Oct2310:50share[root@server2libexec]#cd/mnt/[root@server2mnt]#tarzxfnrpe-2.15.tar.gz

#解压nrpe[root@server2mnt]#cdnrpe-2.15[root@server2nrpe-2.15]#./configure

#配置[root@server2nrpe-2.15]#makeall[root@server2nrpe-2.15]#makeinstall-plugin[root@server2nrpe-2.15]#makeinstall-daemon[root@server2nrpe-2.15]#makeinstall-daemon-config[root@server2nrpe-2.15]#yuminstall-yxinetd[root@server2nrpe-2.15]#makeinstall-xinetd[root@server2nrpe-2.15]#vim/etc/services

#添加nrpe的端口nrpe

5666/tcp[root@server2nrpe-2.15]#cd/etc/xinetd.d/[root@server2xinetd.d]#vimnrpe

#进入配置文件

15

only_from

=

#允许监听[root@server2etc]#cd/usr/local/nagios/etc/[root@server2etc]#lsnrpe.cfg[root@server2etc]#vimnrpe.cfg

#修改命令221

command[check_disk]=/usr/local/nagios/libexec/check_disk

-w20%

-c

10%

-p

/[root@server2etc]#cd..[root@server2nagios]#lsbin

etc

include

libexec

share[root@server2nagios]#cdlibexec/[root@server2libexec]#./check_disk-w20%-c10%-p/

#测试DISKOK-freespace:/6222MB(85%inode=93%);|/=1057MB;6135;6902;0;7669[root@server2libexec]#/etc/init.d/xinetdstart

#开启xinetdStartingxinetd:

[

OK

][root@server2libexec]#netstat-antple|grep5666

#查看端口，开启tcp

0

0:::5666

:::*

LISTEN

0

23552

23120/xinetd

[root@server2libexec]#scpcheck_nrpe:/usr/local/nagios/libexec/root@'spassword:

#将nrpe传给服务端1check_nrpe

100%

75KB

75.0KB/s

00:00

B)将根分区和用户数（服务端2）添加到nagios（服务端1）

服务端1[root@server1libexec]#pwd/usr/local/nagios/libexec[root@server1libexec]#chownnagios.nagioscheck_nrpe

#修改权限[root@server1libexec]#./check_nrpe-H

#测试NRPEv2.15[root@server1libexec]#cd..[root@server1nagios]#cdetc/objects/[root@server1objects]#vimservices.cfg

#添加服务####################check_nrpe#######################

define

service{

use

local-service

host_name

service_description

根分区

check_command

check_nrpe!check_disk

}

define

service{

use

local-service

host_name

service_description

登录用户数

check_command

check_nrpe!check_users

}[root@server1objects]#vimcommands.cfg

#添加命令#

'check_nrpe'

command

definition

define

command{

command_name

check_nrpe

command_line

$USER1$/check_nrpe

-H

$HOSTADDRESS$

-c$ARG1$

}[root@server1objects]#/usr/local/nagios/bin/nagios-v/usr/local/nagios/etc/nagios.cfgTotalWarnings:0TotalErrors:

0Thingslookokay-Noseriousproblemsweredetecteddu