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nagios完全安装文档(CentOS)

第一部分安装

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Nagios的所有插件的地址：http://www.nagios.org/download/addons

1：安装LAMP环境

# yum -y install php httpd gcc glibc glibc-common gd gd-devel

2:建立nagios帐号，请牢记设置的密码

# /usr/sbin/useradd nagios && passwd nagios

创建一个用户组名为nagios用于从web接口执行外部命令。将nagios用户和apache用户都加入到这个组中。

# /usr/sbin/groupadd nagios

# /usr/sbin/usermod -g nagios nagios

# /usr/sbin/usermod -g nagios apache

3:编译与安装nagios

进入到nagios安装包所在的文件夹下

# tar -zxvf nagios- 3.4.1.tar.gz

# cd nagios

# ./configure --with-command-group=nagios --prefix=/usr/local/nagios

# make all

# make install

# make install-init

# make install-config

# make install-commandmode

# make install-webconf

创建一个nagiosadmin的用户，用于nagios的Web接口登录。请牢记你设置的密码。

# htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

验证是否正确安装，进入到安装路径（此处是/usr/local/nagios),看是否存在etc bin sbin share var这五个目录，如果存在，则说明nagios正确的安装到系统

4:编译与安装nagios-plugins

进入到nagios-plugins安装包所在的文件夹下

# tar -zxvf nagios-plugins-1.4.16.tar.gz

# cd nagios-plugins-1.4.16

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

# make && make install

验证：ls /usr/local/nagios/libexec会显示安装的插件文件，即所有的插件都安装在libexec这个目录下

5：启动服务

重启apache服务让设置生效

# service httpd restart

验证nagios的样例配置文件

# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

如果没有报错，启动nagios服务

# service nagios start

6：测试

登录http://IP地址/nagios/,输入用户名和密码,则nagios安装成功。

第二部分监控linux主机

一.被监控机上安装NRPE

1.安装客户端nagios插件

进入到nagios-plugins安装包所在的文件夹下

# tar -zxvf nagios-plugins-1.4.16.tar.gz

# cd nagios-plugins-1.4.16

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

# make && make install

# useradd nagios

# chown nagios.nagios /usr/local/nagios

# chown -R nagios.nagios /usr/local/nagios/libexec

2.给客户端安装NRPE

首先检查openssl是否存在，否则要安装openssl

# rpm –qa | grep openssl

openssl-devel-1.0.0-20.el6_2.5.x86_64

openssl-1.0.0-20.el6_2.5.x86_64

进入到nrpe安装包所在的文件夹下

# tar -zxvf nrpe-2.13.tar.gz

# cd nrpe-2.13

# ./configure --prefix=/usr/local/nagios --enable-ssl --with-ssl-lib=/usr/lib/

# make all

# make install-plugin

# make install-daemon

# make install-daemon-config

返回当前NRPE的版本

# /usr/local/nagios/libexec/check_nrpe -H localhost

启动NRPE

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

3.配置NRPE客户端

添加nrpe服务器地址，允许监控服务器对其读取信息

# vi /usr/local/nagios/etc/nrpe.cfg

在allowed_hosts中添加允许的服务器，例如：

allowed_hosts=127.0.0.1,10.126.53.65,172.18.0.236

添加command字段来添加需要监控的服务，例如：

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_disk]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/hda1

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 150 -c 200

command[check_ping]=/usr/local/nagios/libexec/check_ping -H 172.18.0.237 -w 3,2% -c 10,6% -p 30

重启nrpe

# killall -9 nrpe

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

二.监控机上安装NRPE

1.安装nrpe

首先检查openssl是否存在，否则要安装openssl

# rpm –qa | grep openssl

openssl-devel-1.0.0-20.el6_2.5.x86_64

openssl-1.0.0-20.el6_2.5.x86_64

进入到nrpe安装包所在的文件夹下

# tar -zxvf nrpe-2.13.tar.gz

# cd nrpe-2.13

# ./configure --prefix=/usr/local/nagios --enable-ssl --with-ssl-lib=/usr/lib/

# make all

# make install-plugin

# make install-daemon

# make install-daemon-config

返回当前NRPE的版本

# /usr/local/nagios/libexec/check_nrpe -H localhost

2.commands.cfg中定义外部构件nrpe

# vi /usr/local/nagios/etc/objects/commands.cfg

添加check_nrpe

# 'check_nrpe' command definition

define command{

command_name check_nrpe

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

}

3.配置要监控的Linux主机

# vi /usr/local/nagios/etc/nagios.cfg

修改如下：

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

cfg_dir=/usr/local/nagios/etc/objects/servers

# mkdir /usr/local/nagios/etc/objects/servers/

#chown -R nagios.nagios /usr/local/nagios/etc/objects/servers/

4.配置cgi.cfg文件

# vi /usr/local/nagios/etc/cgi.cfg

修改如下：

use_authentication=1

注意：修改文件权限

# chmod 777 /usr/local/nagios/var/rw/

# chmod 777 / usr/local/nagios/var/rw/nagios.cmd

5.新建host_service_group.cfg，设置其内容

# vi /usr/local/nagios/etc/objects/servers/host_service_group.cfg

其文件内容如下：

define servicegroup{

servicegroup_name host_perfdata

alias host_perfdata

}

define hostgroup{

hostgroup_name host_perfdata

alias host_perfdata

}

6.新建172.18.0.237.cfg，设置监控内容

# vi /usr/local/nagios/etc/objects/servers/172.18.0.237.cfg

其文件内容如下：

define host{

uselinux-server

host_name 172.18.0.237

host_groupshost_perfdata

alias172.18.0.237

address 172.18.0.237

}

define service{

usegeneric-service

host_name 172.18.0.237

service_groupshost_perfdata

service_descriptioncheck_cpu_load

check_command check_nrpe!check_load

notifications_enabled1

}

define service{

use generic-service

host_name 172.18.0.237

service_groupshost_perfdata

service_descriptioncheck_total_process

check_command check_nrpe!check_total_procs

notifications_enabled1

}

define service {

usegeneric-service

host_name 172.18.0.237

service_groupshost_perfdata

service_descriptionPING

check_commandcheck_ping!200.0,20%!500.0,60%

notifications_enabled1

}

验证nagios的配置文件是否正确

# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

如果没有报错，重新加载nagios服务

# service nagios reload

三.Nagios报警设置

3.1网页报警

1.修改cgi.cfg配置文件

# vi /usr/local/nagios/etc/cgi.cfg

去掉下面几行注释

host_unreachable_sound=hostdown.wav

host_down_sound=hostdown.wav

service_critical_sound=critical.wav

service_warning_sound=warning.wav

service_unknown_sound=warning.wav

normal_sound=noproblem.wav

2.在/usr/local/nagios/share/media/下将声音文件添加进去

3.2通过sendEmail发送报警

1.安装sendEmail

进入到sendEmail安装包所在的文件夹下

# tar -zxvf sendEmail-v1.56.tar.gz

# cd sendEmail-v1.56

# cp sendEmail /usr/local/bin/

# chmod 755 /usr/local/bin/sendEmail

2.测试

使用系统自带的sendmail测试

# cd (回到根目录)

# mail -s “I am test”admin@admin< install.log

“I am test”是邮件的主题，在admin@admin中如果能收到邮件，则说明设置成功。

3.修改commands.cfg文件(其实这一步，可以省略，因为在安装nagios的时候，已经默认存在)

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

内容如下：

# '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: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **" $CONTACTEMAIL$

}

# '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\nAdditional Info:\n\n$SERVICEOUTPUT$\n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$

}

4.编辑contacts.cfg文件

# /usr/local/nagios/etc/objects/contacts.cfg

内容如下：

define contact{

contact_name nagiosadmin; Short name of user

use generic-contact; Inherit default values from generic-contact template (defined above)

alias Nagios Admin ; Full name of user

email admin@admin ; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******

service_notification_commands notify-service-by-email

host_notification_commandsnotify-host-by-email

}

5.重启nagios服务

# /etc/init.d/nagios reload

第三部分监控Windows主机

一．被监控机（Windows）上安装NSClient++客户端

下载地址：http://nsclient.org/nscp/downloads

目前最新版本：0.4.1.62，根据需要下载32位或64位机程序。

nagios完全安装文档 (CentOS)
.zip格式和.msi格式大同小异，在次处我使用.msi格式，并以32位机为例。

双击下载好的程序，开始安装

nagios完全安装文档 (CentOS)

nagios完全安装文档 (CentOS)

nagios完全安装文档 (CentOS)

选择：Typical

nagios完全安装文档 (CentOS)

勾选：Allow all users to write config file

nagios完全安装文档 (CentOS)
在Allowed hosts中填写监控主机的IP，NSClient password中本应该填写监控机和

被监控机之间的通信密码，为了方便，在次不进行设置，勾选Modules to load

下面的所有选项。点击Next

nagios完全安装文档 (CentOS)
点击Install完成安装。

进入到服务中，找到NSClient++(Win32)，双击它，选择登录，再勾选允许服务与

桌面交互，最后重启服务。

nagios完全安装文档 (CentOS)

nagios完全安装文档 (CentOS)

二．监控机（Linux）添加监控项

在/usr/local/nagios/etc/objects/servers/目录下添加一台Windows主机

# vi /usr/local/nagios/etc/objects/servers/10.126.53.54.cfg

其文件内容如下：

define host{

use linux-server

host_name10.126.53.54

alias10.126.53.54

host_groupshost_perfdata

address 10.126.53.54

}

define service{

use generic-service

host_name 10.126.53.54

service_groups host_perfdata

service_description check_ping

check_command check_ping!100.0,20%!200.0,50%

notifications_enabled 1

}

define service{

usegeneric-service

host_name 10.126.53.54

service_groups host_perfdata

service_description check_memory_useage

check_command check_nt!MEMUSE!-w 80 -c 90

notifications_enabled 1

}

define service{

use generic-service

host_name 10.126.53.54

service_groups host_perfdata

service_description check_cpu_load

check_command check_nt!CPULOAD!-l 5,70,80

notifications_enabled 1

}

define service{

usegeneric-service

host_name 10.126.53.54

service_groups host_perfdata

service_description check_C:\_space

check_command check_nt!USEDDISKSPACE!-l C!-w 80 -c 90

notifications_enabled 1

}

define service{

use generic-service

host_name 10.126.53.54

service_groups host_perfdata

service_description check_E:\_space

check_command check_nt!USEDDISKSPACE!-l E!-w 80 -c 90

notifications_enabled 1

}

验证nagios的配置文件是否正确

# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

如果没有报错，重新加载nagios服务

# service nagios reload

可以进行测试：

#/usr/local/nagios/libexec/check_nt -H 10.126.53.54 -v CPULOAD -p 12489 -l 5,70,80

#/usr/local/nagios/libexec/check_nt -H 10.126.53.54-v MEMUSE -p 12489

#/usr/local/nagios/libexec/check_nt -H 10.126.53.54 -v USEDDISKSPACE -p 12489 -l C

#/usr/local/nagios/libexec/check_nt -H 10.126.53.54 -v USEDDISKSPACE -p 12489 -l E

第四部分nagvis插件的安装

Nagvis官方网站：http://www.nagvis.org/

Nagvis下载：http://jaist.dl.sourceforge.net/project/nagvis/NagVis 1.7/nagvis-1.7.3.tar.gz

ndoutils下载：http://sourceforge.net/projects/nagios/files/ndoutils-1.x/

一．安装ndoutils

查看是否安装MySQL-devel(它是用来编译ndoutils)

# rpm -qa | grep mysql

如果没有安装mysql-devel，则用yum安装

# yum -y install mysql-devel

为ndoutils创建数据库

#mysql -u root -p

Enter password:

mysql> create database ndodb;

mysql>grant all privileges on ndodb.* to ndouser@localhost identified by 'ndouser';

mysql>grant all privileges on ndodb.* to ndouser@'%' identified by 'ndouser';

mysql>flush privileges;

mysql>quit

关联mysql头文件和库

# ln -s /usr/local/mysql/include/* /usr/include/

# ln -s /usr/local/mysql/lib/* /usr/lib/

注意：/usr/local/mysql是MySQL的安装目录

开始安装ndoutils

# tar zxvf ndoutils-1.5.2.tar.gz

# cd ndoutils-1.5.2

#./configure --prefix=/usr/local/nagios --enable-mysql --enable-ssl --with-ssl-lib=/usr/lib --with-ndo2db-user=nagios --with-ndo2db-group=nagios --with-mysql=/usr/local/mysql --with-mysql-lib=/usr/local/mysql/lib LDFLAGS=-L/usr/lib

注意：/usr/local/mysql是MySQL的安装目录

#make

#make install//此命令可不用执行

# cd db/

# ./installdb -u ndouser -p ndouser -h localhost -d ndodb

# cd ../src/

# cp file2sock log2ndo ndo2db-2x ndo2db-3x ndomod-2x.o ndomod-3x.o/usr/local/nagios/bin/

# cd ../config

# cp ndo2db.cfg-sample ndomod.cfg-sample /usr/local/nagios/etc/

# mv /usr/local/nagios/etc/ndo2db.cfg-sample /usr/local/nagios/etc/ndo2db.cfg

# mv /usr/local/nagios/etc/ndomod.cfg-sample /usr/local/nagios/etc/ndomod.cfg

# chmod 644 /usr/local/nagios/etc/ndo*

# vi /usr/local/nagios/etc/nagios.cfg

修改内容如下：

check_external_commands=1（大概在146行）

command_check_interval=-1（大概在164行）

event_broker_options=-1（大概在222行）

在249行下面添加一行：

broker_module=/usr/local/nagios/bin/ndomod-3x.o config_file=/usr/local /nagios/etc/ndomod.cfg

process_performance_data=1（大概在834行）

# vi /usr/local/nagios/etc/ndomod.cfg

将其修改为：

# cat /usr/local/nagios/etc/ndomod.cfg |grep -v '^#'|sed /^$/d

nagios完全安装文档 (CentOS)

# vi /usr/local/nagios/etc/ndo2db.cfg

将其修改为：

# cat /usr/local/nagios/etc/ndo2db.cfg |grep -v '^#'|sed /^$/d

nagios完全安装文档 (CentOS)

启动ndo2db守护进程

# /usr/local/nagios/bin/ndo2db-3x -c /usr/local/nagios/etc/ndo2db.cfg

二．安装Nagvis

安装支持库graphviz

# cp /etc/yum.repos.d/rpmforge.repo /etc/yum.repos.d/rpmforge.repo.bak

# vi /etc/yum.repos.d/rpmforge.repo

将下面的内容加入到最后面：

[graphviz-stable]

name=Graphviz - RHEL $releasever - $basearch

baseurl=http://www.graphviz.org/pub/graphviz/stable/redhat/el$releasever/$basearch/os/

enabled=1

gpgcheck=0

skip_if_unavailable=1

[graphviz-stable-source]

name=Graphviz - RHEL $releasever - Source

baseurl=http://www.graphviz.org/pub/graphviz/stable/SRPMS/

enabled=0

gpgcheck=0

skip_if_unavailable=1

[graphviz-stable-debuginfo]

name=Graphviz - RHEL - Debug

baseurl=http://www.graphviz.org/pub/graphviz/stable/redhat/el$releasever/$basearch/debug/

enabled=0

gpgcheck=0

skip_if_unavailable=1

[graphviz-snapshot]

name=Graphviz - RHEL $releasever - $basearch

baseurl=http://www.graphviz.org/pub/graphviz/development/redhat/el$releasever/$basearch/os/

enabled=0

gpgcheck=0

skip_if_unavailable=1

[graphviz-snapshot-source]

name=Graphviz - RHEL $releasever - Source

baseurl=http://www.graphviz.org/pub/graphviz/development/SRPMS/

enabled=0

gpgcheck=0

skip_if_unavailable=1

[graphviz-snapshot-debuginfo]

name=Graphviz - RHEL - Debug

baseurl=http://www.graphviz.org/pub/graphviz/development/redhat/el$releasever/$basearch/debug/

enabled=0

gpgcheck=0

skip_if_unavailable=1

# yum -y install graphviz*

# tar zxvf nagvis-1.7.3.tar.gz

# cd nagvis-1.7.3

# bash install.sh

详细请参考官方文档：http://docs.nagvis.org/1.7/en_US/index.html


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