nagios 3.0.6 搭建配置文档

nagios 3.0.6 搭建配置文档

Nagios是一款用于系统和网络监控的应用程序。它可以在你设定的条件下对主机和服务进行监控，在状态变差和变好的时候给出告警信息。

nagios特征简单说明：

监控网络服务（SMTP、POP3、HTTP、NNTP、PING等）；

监控主机资源（处理器负荷、磁盘利用率等）；

简单地插件设计使得用户可以方便地扩展自己服务的检测方法；

并行服务检查机制；

具备定义网络分层结构的能力，用"parent"主机定义来表达网络主机间的关系，这种关系可被用来发现和明晰主机宕机或不可达状态；

当服务或主机问题产生与解决时将告警发送给联系人（通过EMail、短信、用户定义方式）；

具备定义事件句柄功能，它可以在主机或服务的事件发生时获取更多问题定位；自动的日志回滚；

可以支持并实现对主机的冗余监控；

可选的WEB界面用于查看当前的网络状态、通知和故障历史、日志文件等

nagios-3.0.6.tar.gz -----------------------主程序

nagios-plugins-1.4.13.tar.gz------------------插件

nrpe_2.8.1.tar.gz --------------------------监控Linux需要

nsclient++0.3.5 ---------------------------监控windows需要

nagios服务器端（192.168.1.176）

linux被监控端（192.168.1.175）

一。安装

nagios服务器端配置

1.准备软件包（我偷懒了，嘿嘿）

yum install httpd

yum install gcc

yum install glibc glibc-common

yum install gd gd-devel

yum install mysql mysql-server mysql-devel

yum install gnutls

2.建立用户

useradd nagios

passwd nagios

建立一个用户组名为nagcmd组，用于web借口执行外部命令。并将nagios用户和apache用户都加到这个组中

groupadd nagcmd

usermod -G nagcmd nagios

usermod -G nagcmd apache

3.下载nagios和插件程序包

wget

https://www.360docs.net/doc/6010201719.html,/sourceforge/nagios/nagios-3.0.6.tar.gz wget

https://www.360docs.net/doc/6010201719.html,/sourceforge/nagiosplug/nagios-plugins -1.4.13.tar.gz

wget

https://www.360docs.net/doc/6010201719.html,/project/nagios/nrpe-2.x/nrp e-2.8.1/nrpe-2.8.1.tar.gz

4.安装nagiso

tar xzf nagios-3.0.6.tar.gz

cd nagios-3.0.6.tar.gz

运行Nagios配置脚本并使用先前开设的用户及用户组：

./configure --with-group=nagios --with-user=nagios

--with-command-group=nagcmd --with-gd-lib=/usr/lib

--with-gd-inc=/usr/include

编译Nagios程序包源码

make all

安装二进制运行程序、初始化脚本、配置文件样本并设置运行目录权限

make install

make install-init

make install-config

make install-commandmode

5.定义收报警邮件的邮箱

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

更改email地址nagiosadmin的联系人定义信息中的EMail信息为你的EMail 信息以接收报警内容。

6.配置web接口

安装Nagios的WEB配置文件到Apache的conf.d目录下

make install-webconf

创建一个nagiosadmin 的用户用于Nagios的WEB接口登录。记下你所设置的登录口令，一会儿你会用到它。

htpasswd -c /usr/local/nagios/etc/https://www.360docs.net/doc/6010201719.html,ers nagiosadmin

输入密码（记住密码，这是你等下登陆nagios web页面的用户名和密码）

重启Apache服务以使设置生效。

service httpd restart

chown -R nagiso.nagiso /usr/local/nagios/etc/https://www.360docs.net/doc/6010201719.html,ers

(这个一定要修改，这个属主权限没有更改为nagios的话，web页面很多没有权限打开，我因为这个，调试了很久)

编辑httpd.conf配置文件

vi /etc/httpd/conf/httpd.conf

在配置文件最后添加如下内容

ScriptAlias "/nagios/cgi-bin" "/usr/local/nagios/sbin"

Options ExecCGI

AllowOverride None

Order allow,deny

Allow from all

AuthName "Nagios Access"

AuthType Basic

AuthUserFile /usr/local/nagios/etc/https://www.360docs.net/doc/6010201719.html,ers

Require valid-user

Alias /nagios "/usr/local/nagios/share"

Options None

AllowOverride None

Order allow,deny

Allow from all

AuthName "Nagios Access"

AuthType Basic

AuthUserFile /usr/local/nagios/etc/https://www.360docs.net/doc/6010201719.html,ers

Require valid-user

重启apache

killall httpd

service httpd restart

[root@duoduo-test /]# service httpd restart

Stopping httpd: [ OK ] Starting httpd: [Fri Mar 26 00:51:01 2010] [warn] The ScriptAlias directive in /etc/httpd/conf/httpd.conf at line 992 will probably never match because it overlaps an earlier ScriptAlias.

[Fri Mar 26 00:51:01 2010] [warn] The Alias directive in

/etc/httpd/conf/httpd.conf at line 1003 will probably never match because it overlaps an earlier Alias.

httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName

[ OK ]

重启httpd服务，会出现警告信息，但是不会影响nagios的运行，此问题我在网上查询了很久的资料，没有明确的方法

7.编译比安装nagios插件

tar -zxvf nagios-plugins-1.4.11.tar.gz

cd nagios-plugins-1.4.11

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

--with-nagios-gourp=nagios

make&&make install

8.验证nagios的样例配置文件

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

出现这样的就代表没有错误，假如有错误，会指出哪个配置文件哪行有错误，只要去修改就行

[root@duoduo-test local]# /usr/local/nagios/bin/nagios -v

/usr/local/nagios/etc/nagios.cfg

Nagios 3.0.6

Copyright (c) 1999-2008 Ethan Galstad (https://www.360docs.net/doc/6010201719.html,)

Last Modified: 12-01-2008

License: GPL

Reading configuration data...

Running pre-flight check on configuration data...

Checking services...

Checked 19 services.

Checking hosts...

Checked 2 hosts.

Checking host groups...

Checked 1 host groups.

Checking service groups...

Checked 0 service groups.

Checking contacts...

Checked 1 contacts.

Checking contact groups...

Checked 1 contact groups.

Checking service escalations...

Checked 0 service escalations.

Checking service dependencies...

Checked 0 service dependencies.

Checking host escalations...

Checked 0 host escalations.

Checking host dependencies...

Checked 0 host dependencies.

Checking commands...

Checked 25 commands.

Checking time periods...

Checked 5 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: 0

Total Errors: 0

Things look okay - No serious problems were detected during the pre-flight check

[root@duoduo-test local]#

chkconfig --add nagios

chkconfig nagios on

如果没有报错，可以启动Nagios服务

service nagios start

9.关闭selinux

vi /etc/sysconfig/selinux

SELINUX=disabled

将selinux设置为disabled状态，重启系统使selinux配置生效

10。登陆web界面查看nagiso

http://ip/nagios

输入刚刚设置的nagiosadmin的用户民和密码就ok

另外。我配置的时候遇到了2个问题

（1）关于cgi的权限问题无法分配

修改/usr/local/nagios的属主组权限为nagios

（2）页面无法显示的

编辑vi /usr/local/nagios/etc/cgi.cfg

use_authentication=1修改为0

安装完毕！！！！

二。监控配置

linux系统

1.被监控端端配置（19

2.168.1.175），需要安装nrpe_2.8.1.tar.gz和插件nagios-plugins-1.4.1

3.tar.gz

useradd nagios （新建用户nagios）

passwd nagios （修改密码）

wget

https://www.360docs.net/doc/6010201719.html,/sourceforge/nagiosplug/nagios-plugins -1.4.13.tar.gz（下载nagiso插件）

tar -zxvf nagios-plugins-1.4.13.tar.gz

cd nagios-plugins-1.4.13

./configure

make

make install

编译完后，会在/usr/local/nagios/下生成两个目录libexec和share，请查看chown -R nagios.nagios /usr/local/nagios (修改目录属主)

2.安装nrpe

tar -zxvf nrpe_2.8.1.tar.gz

cd nrpe_2.8.1

./configure

make all

make install-plugin

make install-daemon

make install-daemon-config

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

将allowed_hosts=127.0.0.1改为192.168.1.176（我的nagios服务器端）

修改成你的nagios服务器的ip

启动nrpe

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

查看5666端口是否已监听，防火墙开放5666端口

netstat -antl | grep 5666

可以看到里面监控对象

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

# The following examples use hardcoded command arguments...

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_hda1]=/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

nagiso服务器上配置（192.168.1.175）

1。安装nrpe

tar -zxvf nagios-nrpe_2.12.tar.gz

cd nagios-nrpe_2.12

./configure

make all

make install-plugin

测试连通性

/usr/local/nagios/libexec/check_nrpe -H 被监控端的IP

[root@duoduo-test local]# /usr/local/nagios/libexec/check_nrpe -H 192.168.1.175

NRPE v2.8.1

如果返回nrpe的版本号，就正常啰

如果返回连接拒绝，那就先telnet ip 5666，然后在查看iptables的策略

3.修改配置文件

1）。定义nrpe

由于nrpe为外构组件，所以必须在commands.cfg中定义

[root@duoduo-test local]# vi

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

配置文件最下面添加

#check nrpe

define command{

command_name check_nrpe

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

}

2.定义监控对象的配置文件

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

添加

cfg_file=/usr/local/nagios/etc/objects/linuxserver.cfg 配置文件名linuxserver.cfg可以自己更改但是要以.cfg为后缀

新建linuxserver.cfg

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

添加

define host{

use linux-server

host_name aiyo-mailserver

alias aiyo-mailserver

address 210.51.47.213

}

define service{

use generic-service

host_name aiyo-mailserver

service_description HTTP

check_command check_http

}

define service{

use generic-service

host_name aiyo-mailserver

service_description FTP

check_command check_ftp

}

define service{

use generic-service

host_name aiyo-mailserver

service_description SSH

check_command check_ssh

}

define service{

use generic-service

host_name aiyo-mailserver

service_description SMTP

check_command check_smtp

}

define service{

use generic-service

host_name aiyo-mailserver

service_description POP3

check_command check_pop

}

define service{

use generic-service

host_name aiyo-mailserver

service_description check-swap

check_command check_nrpe!check_swap

}

define service{

use generic-service

host_name aiyo-mailserver

service_description check-load

check_command check_nrpe!check_load

}

define service{

use generic-service

host_name aiyo-mailserver

service_description check-disk

check_command check_nrpe!check_had1

}

define service{

use generic-service

host_name aiyo-mailserver

service_description zombie_procs

check_command check_nrpe!check_zombie_procs }

define service{

use generic-service

host_name aiyo-mailserver

service_description check-users

check_command check_nrpe!check_users

}

define service{

use generic-service

host_name aiyo-mailserver

service_description total_procs

check_command check_nrpe!check_total_procs }

保存退出

此配置文件中定义了对象和服务

2.检测配置文件的正确性

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

重启nagios，查看web页面

4.针对mysql监控

定义mysql命令

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

在最后增加

# 'check_mysql' command definition

define command{

command_name check_mysql

command_line $USER1$/check_Mysql -H $HOSTADDRESS$ -u nagios -d nagdb

}

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

增加mysql的监控

define service{

use generic-service

host_name linux-192.168.1.175

service_description mysql

check_command check_mysql

}

检测配置文件正确性

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

重启nagios

killall nagios

service nagios restart

PS:

增加nagios和nrpe开机自动运行

echo "/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg

–d" >> /etc/rc.local

ehco "/usr/local/nagios/bin/nagios -d

/usr/local/nagios/etc/nagios.cfg" >>/etc/rc.local