nagios安装配置

- 日理万妓 2022-07-12 09:50 529阅读 0赞

**服务器端安装 **

1. 查看安装服务器环境（LAMP）

2. \#rpm -qa | grep httpd

3. \#rpm -qa | grep php

4. 没有的话安装

5. \# **yum -y install gcc glibc glibc-common gd gd-devel php openssl-devel httpd **

6. 创建用户：

7. \# useradd -m -s /bin/bash nagios

9. \# usermod -G nagios nagios

10.\# vi /etc/passwd

11.nagios:x:500:500::/home/nagios:/sbin/nologin

12.改成：

13.nagios:x:500:500::/home/nagios:/bin/bash

14**.创建一个用户组名为nagcmd 用于从Web接口执行外部命令。将nagios用户和apache用户都加到这个组中。 **

15.因为要用到 CGI 的 Web 监控面板，所以这里我们还要添加一个 nagcmd 组，用于 CGI 执行相关指令。

16.\# /usr/sbin/groupadd nagcmd

17.\# /usr/sbin/usermod -G nagcmd nagios

18.\# /usr/sbin/usermod -a -G nagcmd daemon (**因为是编译方式安装的apache，默认是以daemon用户运行**)

下载相关的软件包，

**服务器端需要安装以下三个包，客户端只需要安装后两个插件包**：

1. \[root@server ~\]\#cd /usr/local/src/

\[root@server src\]\#http://sourceforge.net/projects/nagios/files/nagios-3.x/nagios-3.4.3/nagios-3.4.3.tar.gz

\[root@server tarbag\]\# wget    https://nagios-plugins.org/download/nagios-plugins-2.1.4.tar.gz

4. \[root@server tarbag\]\#wget http://prdownloads.sourceforge.net/sourceforge/nagios/nrpe-2.12.tar.gz

**解压并编译安装Nagios：**

\# tar xvzf nagios-3.4.3.tar.gz

\# cd nagios

运行Nagios配置脚本并使用先前开设的用户及用户组：

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

编译Nagios程序包源码：

1. \# 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：

1. \# make install

2. \# make install-init          //在/etc/rc.d/init.d安装启动脚本

3. \# make install-config       //安装示例配置文件,安装的路径是/usr/local/nagios/etc

4. \# make install-commandmode        //配置目录权限

5. \#ls /usr/local/nagios/

6. bin etc libexec sbin share var

三、配置nagios网页访问

1. 配置httpd

2. **生成Nagios的Apache配置文件**

3. \# cd /uer/local/src/nagios

4. \# make install-webconf

5.   /usr/bin/install -c -m 644 sample-config/httpd.conf /etc/httpd/conf.d/nagios.conf

6. \# cd sample-config

7. 参考sample-config/httpd.conf配置内容添加到Apache的httpd.conf配置文件中

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

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

10.密码：nagiosadmin

重启Apache服务以使设置生效，访问http://ip/nagios/看是否正常。

四、对nagios进行配置

样例配置文件默认安装在这个目录下/usr/local/nagios/etc，这些样例文件可以配置Nagios使之正常运行，只需要做一个简单的修改...

用你擅长的编辑器软件来编辑这个/usr/local/nagios/etc/objects/contacts.cfg配置文件，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。

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

1、安装nagios插件

11.\#cd ../

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

\#cd nagios-plugins-2.1.4

14.\#./configure --with-nagios-user=nagios --with-nagios-group=nagios --prefix=/usr/local/nagios/   //指定安装目录及用户和组

15.\#make;make install

16.

17.安装NRPE插件，想获取客户机上更为详细的信息，还必须在服务器及客户端上安装NRPE插件。

18.\#cd ..

19.\#tar zxvf nrpe-2.12.tar.gz

20.\#cd nrpe-2.12

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

22.\# make all

23.\# make install-plugin;make install-daemon;make install-daemon-config

24.\# ls /usr/local/nagios/libexec/

25.check\_apt check\_ftp check\_mailq check\_overcr check\_tcp　.......

26.验证Nagios的样例配置文件

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

28.如果没有报错，可以启动Nagios服务

29.启动httpd及nagios服务并验证

30.\#chkconfig --add nagios   //设置nagios及http开机自启动

31.\#chkconfig nagios on

32.\#chkconfig httpd on

33.\#service nagios start

34.\#service httpd start

2、客户端安装

1. \#useradd -s /sbin/nologin nagios //添加nagios用户

2. 安装nagios-plugins

3. \# tar -zxvf nagios-plugins-1.4.15.tar.gz

4. \# cd nagios-plugins-1.4.15

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

6. \# make

7. \# make install

8. \# chown nagios.nagios /usr/local/nagios/

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

10.安装nrpe插件

11.\# tar -zxvf nrpe-2.12.tar.gz

12.\# cd nrpe-2.12

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

14.\#

15.\# make install-plugin   安装check\_nrpe这个插件

16.\# make install-daemon    安装daemon

17.\# make install-daemon-config   安装配置文件

18.如果安装时报错：checking for SSL headers... configure: error: Cannot find ssl headers

19.\# rpm -qa|grep openssl

20.openssl-devel-0.9.8e-12.el5\_4.6

21.openssl-0.9.8e-12.el5\_4.6

22.yum install openssl-devel

23.或者下载：http://www.openssl.org/source/

24.tar zxvf openssl-1.0.0a.tar.gz

25.cd openssl-1.0.0a

26../config

27.make

28.make test

29.make install

30.修改客户端配置文件

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

32.server\_port:5666

33.allowed\_hosts=127.0.0.1，192.168.1.95   //添加服务器端的IP地址

34.指定nagios监控主机ip,多个ip用逗号分隔，后面的IP地址，是nagios服务端的ip地址，也就是说只允许指定的ip通过nrpe开的端口5666取得本机的信息。

35.然后修改nrpe.cfg中的command部分。

36.启动NRPE守护进程：（可以将此命令加入/etc/rc.local，以便开机自动启动）

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

38.可以将此命令加入/etc/rc.local，以便开机自动启动

39.echo "/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d" >> /etc/rc.local

40.\#netstat -utpln |grep nrpe        //查看nrpe进程是否已正常启动

41.\#/usr/local/nagios/libexec/check\_nrpe -H 127.0.0.1 NRPE v2.14    //nrpe测试结果，此结果为nrpe已经正常工作了

42.然后在nagios监控服务器上测试

43.\#/usr/local/nagios/libexec/check\_nrpe -H 192.168.1.77//被监控主机ip

44.返回信息被监控服务器上安装的NRPE版本：NRPE v2.12

3、定义监控内容

1. \# vi /usr/local/nagios/etc/nrpe.cfg   //定义监控服务器内容

2. command\[check\_users\]=/usr/local/nagios/libexec/check\_users -w 5 -c 10 \#监控登陆的用户数量

3. command\[check\_load\]=/usr/local/nagios/libexec/check\_load -w 15,10,5 -c 30,25,20 \#监控CPU的负载

4. command\[check\_sda2\]=/usr/local/nagios/libexec/check\_disk -w 20% -c 10% -p /dev/sda2 \#监控磁盘利用率，这里的sda2必须是实际的硬盘分区，可使用fdisk –l查

5. command\[check\_swap\]=/usr/local/nagios//libexec/check\_swap -w 20 -c 10 \#监控交换空间  command\[check\_zombie\_procs\]=/usr/local/nagios/libexec/check\_procs -w 5 -c 10 -s Z \#监控进程中的僵尸进程

6. command\[check\_total\_procs\]=/usr/local/nagios/libexec/check\_procs -w 150 -c 200 \#监控所有进程

7. 注意：command后面括号中的内容就是定义的变量，变量名可以任意指定，只需和服务器配置文件中的一致即可

4、自动添加主机服务

五、安装中遇到错误

\[root@localhost nagios\]\# make all

cd ./base && make

make\[1\]:Entering directory '/tmp/nagios/base'

make\[1\]:\*\*\* No rule to make target '/include/locations.h', needed by'broker.o'. Stop.

make\[1\]:Leaving directory '/tmp/nagios/base'

make:\*\*\*\[all\]Error 2

\[root@localhost nagios\]\#

解决办法：

安装perl

yum –yinstall  perl

重新编译即可

一、Nagios服务端安装

1、安装所需依赖关系包

2、添加Nagios所需用户及组

3、编译安装Nagios及创建登陆Nagios WEB程序用户

4、Nagios-plugin(插件)

5、配置服务自启动

二、基于NRPE配置Nagios监控Win主机

1、被监控端

安装：NSClient++-0.3.9-x64

2、监控端

1.测试与被监控端连通性

2.监控端定义命令、定义主机、定义服务

3.将定义好的模板加入到nagios.cfg文件中

4.重启服务

三、基于NRPE监控Linux主机

1、被监控端：

1.添加用户

2.安装插件nagios-plugins-1.4.15

3.安装NRPE

4.配置NRPE配置文件

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

5.定义nrpe启动脚本且增加权限

6.添加自启动

7.启动服务

2、配置监控端：

1.安装NRPE

安装完成后，生成check\_nrpe，使用此插件进行测试被监控主机

2.定义命令

3.定义主机和服务

4.将定义好的linhost.cfg配置文件的路径添加至/usr/localhost/etc/nagios.cfg中

5.测试配置文件  /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

6.重启服务

7.网页检查hosts监控状况

\*\*\*\*\*\*另关于基于NRPE监控windows主机,另行查询网上资料\*\*\*\*\*\*

**一、安装配置Nagios**

1、解决安装Nagios的依赖关系：

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

2、添加nagios运行所需要的用户和组：

\# groupadd  nagcmd

\# useradd -G nagcmd nagios

\# passwd nagios

\# usermod -a -G nagcmd apache

3、编译安装nagios：

\# tar zxf nagios-3.3.1.tar.gz

\# cd nagios-3.3.1

\# ./configure --with-command-group=nagcmd --enable-event-broker

\# make all

\# make install

\# make install-init

\# make install-commandmode

\# make install-config

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

emailnagios@localhost       \#这个是默认设置

\# make install-webconf

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

\# service httpd restart

4、编译、安装nagios-plugins

\# tar zxf nagios-plugins-1.4.15.tar.gz

\# cd nagios-plugins-1.4.15

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

\# make

\# make install

5、配置并启动Nagios

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

\# chkconfig --add nagios

\# chkconfig nagios on

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

\# service nagios start

6、配置selinux

\#getenforce

\#setenforce 0

7、通过web界面查看nagios：

http://your\_nagios\_IP/nagios

登录时需要指定前面设定的web认证帐号和密码。

二、配置文件

Nagios的主配置文件

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

Nagios模板配置目录

/usr/local/nagios/etc/objects

调用check命令目录/usr/local/nagios/libexec

三、基于NSClinet++  监控远程Win主机

1、安装配置被监控端

安装NSClient++-0.3.9-x64

2、进行测试是否连通

\#cd /usr/local/nagios/libexec

\#./check\_nt -H 192.168.1.119 -v UPTIME -p 12489

如有密码则：\#./check\_nt -H 192.168.1.119 -v UPTIME -p 12489 -s luoxj,123

3、监控端进行配置

&&&定义commands.cfg-------------------定义命令

\#cd /usr/local/nagios/etc/objects/

\#vi commands.cfg

define command\{

command\_name    check\_nt

command\_line    $USER1$/check\_nt -H $HOSTADDRESS$ -p 12489 -v $ARG1$ $ARG2$

&&&定义主机及服务

\#vi windows.cfg

define host\{

use             windows-server

host\_name       winhost

alias           My Windows Host

address         192.168.1.119

define service\{        use                     generic-service        host\_name               winhost        service\_description     NSClient++ Version        check\_command           check\_nt!CLIENTVERSION        \}定义服务可根据实际情况进行变更名称可使用vim中替换进行：.,$s@winserver@winhost@g

&&&启用定义的文件，增加定义文件路径

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

cfg\_file=/usr/local/nagios/etc/objects/windows.cfg

&&&进行测试，以确定配置文件没有问题

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

\#service nagios restart

四、基于NRPE监控远程Linux主机

1、安装配置被监控端

1）先添加nagios用户

\# useradd -s /sbin/nologin nagios

2）NRPE依赖于nagios-plugins，因此，需要先安装之

\# tar zxf nagios-plugins-1.4.15.tar.gz

\# cd nagios-plugins-1.4.15

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

\# make all

\# make instal

3）安装NRPE

\# tar -zxvf nrpe-2.12.tar.gz

\# cd nrpe-2.12.tar.gz

\# ./configure --with-nrpe-user=nagios \\

--with-nrpe-group=nagios \\

--with-nagios-user=nagios \\

--with-nagios-group=nagios \\

--enable-command-args \\

--enable-ssl

\# make all

\# make install-plugin

\# make install-daemon

\# make install-daemon-config

4）配置NRPE

\# vim /usr/local/nagios/etc/nrpe.conf

log\_facility=daemon

pid\_file=/var/run/nrpe.pid

server\_address=172.16.100.11

server\_port=5666

nrpe\_user=nagios

nrpe\_group=nagios

allowed\_hosts=172.16.100.1

command\_timeout=60

connection\_timeout=300

debug=0

&&&&&&&&定义监控对象命令&&&&&&&&&

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\[check\_sda1\]=/usr/local/nagios/libexec/check\_disk -w 20% -c 10% -p /dev/sda1

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

5）启动NRPE

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

为了便于NRPE服务的启动，可以将如下内容定义为/etc/init.d/nrped脚本：

\#vi /etc/init.d/nrped

\#!/bin/bash

\# chkconfig: 2345 88 12

\# description: NRPE DAEMON

NRPE=/usr/local/nagios/bin/nrpe

NRPECONF=/usr/local/nagios/etc/nrpe.cfg

case "$1" in

start)

echo -n "Starting NRPE daemon..."

$NRPE -c $NRPECONF -d

echo " done."

;;

stop)

echo -n "Stopping NRPE daemon..."

pkill -u nagios nrpe

echo " done."

;;

restart)

$0 stop

sleep 2

$0 start

;;

\*)

echo "Usage: $0 start|stop|restart"

;;

esac

exit 0

\#chmod +x /etc/init.d/nrped

\#service nrped start

\#netstat -tnlp    \#\#检查nrpe端口5666是否启用

tcp        0      0 0.0.0.0:5666                0.0.0.0:\*                   LISTEN      17282/nrpe

\#service iptables stop

\#setenforce 0

6）配置允许远程主机监控的对象

在被监控端，可以通过NRPE监控的服务或资源需要通过nrpe.conf文件使用命令进行定义，定义命令的语法格式为：command\[<command\_name>\]=<command\_to\_execute>。比如：

command\[check\_rootdisk\]=/usr/local/nagios/libexec/check\_disk -w 20% -c 10% -p /

command\[check\_swap\]=/usr/local/nagios/libexec/check\_disk -w 40% -c 20%

command\[check\_sensors\]=/usr/local/nagios/libexec/check\_sensors

command\[check\_users\]=/usr/local/nagios/libexec/check\_users -w 10 -c 20

command\[check\_load\]=/usr/local/nagios/libexec/check\_load -w 10,8,5 -c 20,18,15

command\[check\_zombies\]=/usr/local/nagios/libexec/check\_procs -w 5 -c 10 -s Z

command\[check\_all\_procs\]=/usr/local/nagios/libexec/check\_procs -w 150 -c 200

2、配置监控端

1）安装NRPE

\# tar -zxvf nrpe-2.12.tar.gz

\# cd nrpe-2.12.tar.gz

\# ./configure --with-nrpe-user=nagios \\

\--with-nrpe-group=nagios \\

\--with-nagios-user=nagios \\

\--with-nagios-group=nagios \\

\--enable-command-args \\

--enable-ssl

\# make all

\# make install-plugin

安装完成后，/usr/local/nagios/libexec/check\_nrpe就会生成此插件，可测试客户端工作正常于否

\#cd /usr/local/nagios/libexec/

\#./check\_nrpe -H 192.168.1.124

NRPE v2.12

2）定义如何监控远程主机及服务：

通过NRPE监控远程Linux主机要使用chech\_nrpe插件进行，其语法格式如下：

check\_nrpe -H <host> \[-n\] \[-u\] \[-p <port>\] \[-t <timeout>\] \[-c <command>\] \[-a <arglist...>\]

定义监控远程Linux主机的命令：

\#vi /usr/local/nagios/etc/objects/commands.cfg   添加nrpe命令

define command\{

command\_name    check\_nrpe

command\_line    $USER1$/check\_nrpe -H $HOSTADDRESS$ -c $ARG1$

\*\*\*\*\*\*\*\*\*\*\*\*建立模板文件\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

\#cd /usr/local/nagios/etc/objects/

\#vim linhost.cfg   或是  \#cp localhost.cfg linhost.cfg

\*\*\*定义远程Linux主机：

define host\{

use                     linux-server

host\_name         linhost

alias                   my Linux Host

address              192.168.1.124

如主机组不需要则注释，添加服务可参照被监控端

/usr/local/nagios/etc/nrpe.cfg中的

command\[check\_users\]=/usr/local/nagios/libexec/check\_users -w 5 -c 10command\[check\_load\]=/usr/local/nagios/libexec/check\_load -w 15,10,5 -c 30,25,20command\[check\_sda1\]=/usr/local/nagios/libexec/check\_disk -w 20% -c 10% -p /dev/sda1command\[check\_zombie\_procs\]=/usr/local/nagios/libexec/check\_procs -w 5 -c 10 -s Zcommand\[check\_total\_procs\]=/usr/local/nagios/libexec/check\_procs -w 150 -c 200

进行详细配置服务 \*\*\*定义远程Linux服务：也可以在后加参数进行设定监控

define service\{

use                     generic-service        host\_name               linhost        service\_description     check\_users        check\_command           check\_nrpe!check\_users        \}\# Create a service for monitoring the uptime of the server

\# Change the host\_name to match the name of the host you defined abovedefine service\{        use                     generic-service        host\_name               linhost        service\_description     load        check\_command           check\_nrpe!check\_load        \}\# Create a service for monitoring CPU load

\# Change the host\_name to match the name of the host you defined abovedefine service\{        use                     generic-service        host\_name               linhost        service\_description     sda1        check\_command           check\_nrpe!check\_sda1        \}\# Create a service for monitoring memory usage

\# Change the host\_name to match the name of the host you defined abovedefine service\{        use                     generic-service        host\_name               linhost        service\_description     Zombie        check\_command           check\_nrpe!check\_zombie\_procs        \}define service\{        use                     generic-service        host\_name               linhost        service\_description     Total procs        check\_command           check\_nrpe!check\_total\_procs        \}

3）将设定好的linhost.cfg文件添加至/usr/local/nagios/etc/nagios.cfg中

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

cfg\_file=/usr/local/nagios/etc/objects/linhost.cfg

4）进行测试配置文件

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

5）重启服务\#service nagios restart

\#1.nagios的监控模式定义及监控模式的选择

1.1.主动模式，由nagios服务器端发出的请求主动探测就可以得到数据的监控模式，也就是说不需要再

客户端安装任何插件(适合对 端口 URL http ssh mysql rsync等监控)。当然主动模式也可以配置为被动模式探测

1.2.半被动模式，我们把负载，内存，硬盘，虚拟内存，磁盘IO，温度，风扇等

对于这些本地资源性能的监控，一般使用半被动模式（通过调用nrpe，snmp）

1.3.被动模式

主动模式：和nrpe无关了，就是利用服务端本地插件直获取信息

被动模式：主程序通过check\_nrpe插件，和客户端nrpe进程沟通，调用本地插件获取数据

\#2.配置服务端

\[root@nagios tools\]\# ll /usr/local/nagios/

total 32

drwxrwxr-x  2 nagios nagios 4096 Jul 14 23:25 bin            \#命令的目录

drwxrwxr-x  3 nagios nagios 4096 Jul 14 23:25 etc            \#配置文件的目录

drwxr-xr-x  2 root   root   4096 Jul 14 23:24 include

drwxrwxr-x  2 nagios nagios 4096 Jul 14 23:25 libexec        \#插件

drwxr-xr-x  5 root   root   4096 Jul 14 23:24 perl

drwxrwxr-x  2 nagios nagios 4096 Jul 14 23:21 sbin           \#cgi 的程序

drwxrwxr-x 11 nagios nagios 4096 Jul 14 23:24 share          \#web程序，nagios界面展示的php程序

drwxrwxr-x  5 nagios nagios 4096 Jul 16 10:03 var            \#日志和数据

\[root@nagios tools\]\# cd /usr/local/nagios/etc

\[root@nagios etc\]\# ls -l

total 76

\-rw-rw-r-- 1 nagios nagios 11669 Jul 14 23:21 cgi.cfg

\-rw-r--r-- 1 root   root      21 Jul 14 23:22 htpasswd.users  \#密码验证文件

\-rw-rw-r-- 1 nagios nagios 44710 Jul 14 23:21 nagios.cfg      \#nagios主配置文件

\-rw-r--r-- 1 nagios nagios  7207 Jul 14 23:25 nrpe.cfg

drwxrwxr-x 2 nagios nagios  4096 Jul 14 23:21 objects

\-rw-rw---- 1 nagios nagios  1340 Jul 14 23:21 resource.cfg

\#生成hosts.cfg文件

\[root@nagios etc\]\# cd objects/

\[root@nagios objects\]\# head -51 localhost.cfg >hosts.cfg

\[root@nagios objects\]\# chown nagios.nagios /usr/local/nagios/etc/objects/hosts.cfg

\#生成 services.cfg文件

\[root@nagios objects\]\# touch services.cfg

\[root@nagios objects\]\# chown nagios.nagios /usr/local/nagios/etc/objects/services.cfg

\[root@nagios objects\]\# ll

total 52

\-rw-rw-r-- 1 nagios nagios  7716 Jul 14 23:21 commands.cfg      \#存放nagios 命令相关配置，实现nagios命令和linux系统命令关联

\-rw-rw-r-- 1 nagios nagios  2166 Jul 14 23:21 contacts.cfg      \#存放报警联系人的相关配置文件

\-rw-r--r-- 1 nagios nagios  1870 Jul 16 12:00 hosts.cfg         \#新增，存放具体被监控主机相关配置

\-rw-rw-r-- 1 nagios nagios  5403 Jul 14 23:21 localhost.cfg

\-rw-rw-r-- 1 nagios nagios  3124 Jul 14 23:21 printer.cfg

\-rw-r--r-- 1 nagios nagios     0 Jul 16 12:03 services.cfg      \#新增，存放具体被监控服务相关配置

\-rw-rw-r-- 1 nagios nagios  3293 Jul 14 23:21 switch.cfg

\-rw-rw-r-- 1 nagios nagios 10812 Jul 14 23:21 templates.cfg     \#模板配置文件

\-rw-rw-r-- 1 nagios nagios  3208 Jul 14 23:21 timeperiods.cfg   \#存放报警周期时间等相关配置

\-rw-rw-r-- 1 nagios nagios  4019 Jul 14 23:21 windows.cfg

**\#修改 nagios.cfg 文件前，备份/etc 目录防止改错**

\[root@nagios etc\]\# cd ..

\[root@nagios nagios\]\# tar zcvf etc.tar.gz ./etc/

./etc/

./etc/nagios.cfg

./etc/cgi.cfg

./etc/nrpe.cfg

./etc/htpasswd.users

./etc/objects/

./etc/objects/printer.cfg

./etc/objects/localhost.cfg

./etc/objects/contacts.cfg

./etc/objects/windows.cfg

./etc/objects/timeperiods.cfg

./etc/objects/switch.cfg

./etc/objects/commands.cfg

./etc/objects/templates.cfg

./etc/resource.cfg

\[root@nagios nagios\]\# cd etc

\[root@nagios etc\]\# **vi nagios.cfg +34**

\#添加3行，

注释1行

\# You can specify individual object config files as shown below:

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/timeperiods.cfg

cfg\_file=/usr/local/nagios/etc/objects/templates.cfg

\#添加这2行

cfg\_file=/usr/local/nagios/etc/objects/services.cfg

cfg\_file=/usr/local/nagios/etc/objects/hosts.cfg

\#注释1行,这是本机监控

\#cfg\_file=/usr/local/nagios/etc/objects/localhost.cfg

\# directive as shown below:

\#添加1行（主动监控使用）

cfg\_dir=/usr/local/nagios/etc/services  \#添加services（服务）目录包含

\#cfg\_dir=/usr/local/nagios/etc/servers  \#服务器

\#cfg\_dir=/usr/local/nagios/etc/printers \#打印机

\#cfg\_dir=/usr/local/nagios/etc/switches \#交换机

\#cfg\_dir=/usr/local/nagios/etc/routers  \#路由器

**\#创建services目录 并授权**

\[root@nagios etc\]\#cd /usr/local/nagios/etc

\[root@nagios etc\]\# mkdir services

\[root@nagios etc\]\# chown -R nagios.nagios services/

\[root@nagios etc\]\# ll

total 80

\-rw-rw-r-- 1 nagios nagios 11669 Jul 14 23:21 cgi.cfg

\-rw-r--r-- 1 root   root      21 Jul 14 23:22 htpasswd.users

\-rw-rw-r-- 1 nagios nagios 44852 Jul 16 11:55 nagios.cfg

\-rw-r--r-- 1 nagios nagios  7207 Jul 14 23:25 nrpe.cfg

drwxrwxr-x 2 nagios nagios  4096 Jul 16 12:03 objects

\-rw-rw---- 1 nagios nagios  1340 Jul 14 23:21 resource.cfg

drwxr-xr-x 2 nagios nagios  4096 Jul 16 11:56 services          \#新增,存放主动监控项目

\#配置服务端监控客户端

\[root@nagios etc\]\# cd objects/

\[root@nagios objects\]\# vi hosts.cfg

\# Define a host for the local machine

define host\{

use                   linux-server

host\_name               1.3-samba

alias                   1.3-samba

address                 10.89.1.3

define host\{

use                      linux-server

host\_name                1.2-nagios

alias                    1.2-nagios

address                  10.89.1.2

define host\{

use                      linux-server

host\_name                1.34-web-lnmp

alias                    1.34-web-lnmp

address                  10.89.1.34

define host\{

use                      linux-server

host\_name                1.34-web

alias                    1.34-web

address                  10.89.1.34

\# Define an optional hostgroup for Linux machines

define hostgroup\{

hostgroup\_name  linux-servers ; The name of the hostgroup

alias           Linux Servers ; Long name of the group

members         1.3-samba,1.2-nagios,1.34-web-lnmp,1.34-web

保存退出

检查语法，先编辑nagios文件,使出错信息显示出来

\[root@nagios objects\]\# vim /etc/init.d/nagios +183

$NagiosBin -v $NagiosCfgFile > /dev/null 2>&1;   修改为：

$NagiosBin -v $NagiosCfgFile

保存退出

检查语法，如果报错如下：

\[root@nagios objects\]\# /etc/init.d/nagios checkconfig

Checking services...

Error: There are no services defined!

Checked 0 services.

解决方法：

\[root@nagios objects\]\# vi services.cfg

define service \{

use                     generic-service

host\_name               1.3-samba

service\_description     Disk Partition

check\_command           check\_nrpe!check\_disk

再检查语法

\[root@nagios objects\]\# /etc/init.d/nagios checkconfig

Total Warnings: 1

Total Errors:   0

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

OK.

\[root@nagios objects\]\#

如果报下面错误：

Error:Service check command 'check\_nrpe' specified in service 'Disk Partition' for

host '10-client01' not defined anywhere!

则编辑commands.cfg 文件：

\[root@nagios objects\]\# vi commands.cfg

再末尾加上

\# 'check\_nrpe' command definition

define command\{

command\_name    check\_nrpe

command\_line    $USER1$/check\_nrpe -H $HOSTADDRESS$ -c $ARG1$

注意：command\_line    $USER1$/check\_nrpe -H $HOSTADDRESS$ -c $ARG1$ 实际上就是使用这个命令探测：

\[root@nagios objects\]\#/usr/local/nagios/libexec/check\_nrpe -H 10.89.1.3 -c check\_disk

保存并退出

再检查语法

\[root@nagios objects\]\# /etc/init.d/nagios checkconfig

没有错误的情况下：

\[root@nagios objects\]\# /etc/init.d/nagios reload

Running configuration check...done.

Reloading nagios configuration...done

\[root@nagios objects\]\#

http://10.89.1.2/nagios

wKioL1hblIjRr84hAABeqkBD1sI501.jpg-wh\_50

如果登录后提示错误：

It appears as though you do not have permission to view information for any of the hosts you requested...

If you believe this is an error, check the HTTP server authentication requirements for accessing this CGI

and check the authorization options in your CGI configuration file.

编辑 cgi.cfg

\[root@nagios objects\]\# cd ../

\[root@nagios etc\]\# vi cgi.cfg

\# PHYSICAL HTML PATH

\# This is the path where the HTML files for Nagios reside.  This

\# value is used to locate the logo images needed by the statusmap

\# and statuswrl CGIs.

physical\_html\_path=/usr/local/nagios/share

:g/nagiosadmin/s//alvin/g           \#替换nagiosadmin 为 alvin，该用户是我安装的时候添加的

保存并退出

\[root@nagios objects\]\# /etc/init.d/nagios reload

1.主动监控模式

监控客户端LNMP 网站服务

服务器端：

\[root@nagios\]\#cd /usr/local/nagios/etc/objects

\[root@nagios objects\]\# vi commands.cfg

\#在最下面增加：

\# 'check\_weburl' command definition

define command\{

command\_name    check\_weburl

command\_line    $USER1$/check\_http $ARG1$ -w 10 -c 30

保存退出

\[root@nagios objects\]\#cd /usr/local/nagios/etc/services

创建主动模式监控配置文件webzd.cfg

\[root@nagios objects\]\#vi webzd.cfg

define service \{

use               generic-service

host\_name           1.34-web

service\_description    blog\_ip

check\_command        check\_weburl! -I 10.89.1.34

max\_check\_attempts     3

normal\_check\_interval   2

retry\_check\_interval    1

check\_period         24x7

notification\_interval   30

notification\_period    24x7

notification\_options    w,u,c,r

contact\_groups        admins

process\_perf\_data      1

define service \{

use               generic-service

host\_name           1.34-web

service\_description     blog\_url

check\_command        check\_http! -H bolg.etiantian.org

max\_check\_attempts     3

normal\_check\_interval   2

retry\_check\_interval    1

check\_period         24x7

notification\_interval   30

notification\_period    24x7

notification\_options    w,u,c,r

contact\_groups        admins

define service \{

use               generic-service

host\_name           1.34-web

service\_description    blog\_port\_80

check\_command        check\_tcp!80

max\_check\_attempts     3

normal\_check\_interval   2

retry\_check\_interval    1

check\_period         24x7

notification\_interval   30

notification\_period    24x7

notification\_options   w,u,c,r

contact\_groups       admins

define service \{

use               generic-service

host\_name           1.34-web

service\_description    ssh\_port

check\_command        check\_tcp! 22

max\_check\_attempts     3

normal\_check\_interval   2

retry\_check\_interval    1

check\_period         24x7

notification\_interval   30

notification\_period    24x7

notification\_options    w,u,c,r

contact\_groups        admins

define service \{

use               generic-service

host\_name           1.34-web

service\_description    mysql\_port

check\_command        check\_tcp!3306

max\_check\_attempts     3

normal\_check\_interval   2

retry\_check\_interval    1

check\_period         24x7

notification\_interval   30

notification\_period     24x7

notification\_options    w,u,c,r

contact\_groups        admins

define service \{

use               generic-service

host\_name           1.34-web

service\_description    rsync

check\_command        check\_tcp!873

max\_check\_attempts     3

normal\_check\_interval   2

retry\_check\_interval   1

check\_period         24x7

notification\_interval   30

notification\_period    24x7

notification\_options    w,u,c,r

contact\_groups        admins

保存并退出

检查语法

\[root@@nagios objects\]\# /etc/init.d/nagios checkconfig

没有错误的情况下：

\[root@@nagios objects\]\# /etc/init.d/nagios reload

\------------------------------------------------------------------

自定义插件：监控密码文件是否改变

客户端测试：

将/etc/passwd生成md5值

\[root@weblnmp ~\]\# md5sum /etc/passwd

5e2ebd59c3ebb7bd3c4b09b0674ca746  /etc/passwd

保存到/etc/alvin.md5 (文件名随便取，存放的位置任意)

\[root@weblnmp ~\]\# md5sum /etc/passwd >/etc/alvin.md5

分析md5值是否变化，没有变化显示"OK"

\[root@weblnmp ~\]\# md5sum -c /etc/alvin.md5

/etc/passwd: OK

实战：

1.在客户端添加自定义脚本

cd /usr/local/nagios/libexec

cat check\_passwd

\#!/bin/bash

char=\`md5sum -c /etc/alvin.md5 2>/dev/null|grep "OK"|wc -l\`

if \[ $char -eq 1 \];

then

echo "passwd is ok"

exit 0

else

echo "passwd is changed"

exit 2

\#添加执行的权限

\[root@weblnmp libexec~\]\# chmod +x check\_passwd

\[root@weblnmp libexec~\]\# ll check\_passwd

\-rwxr-xr-x 1 root root 166 Jul 22 21:33 check\_passwd

2.在客户端增加命令，并重启nrpe服务使之生效

\[root@weblnmp libexec~\]\#vim /usr/local/nagios/etc/nrpe.cfg

添加check\_passwd定义命令

command\[check\_passwd\]=/usr/local/nagios/libexec/check\_passwd

\[root@weblnmp libexec~\]\#pkill nrpe

\#重新启动nrpe

\[root@weblnmp libexec~\]\#/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d

\#查看是否启动了

\[root@weblnmp libexec~\]ps -ef|grep nrpe

nagios    64672      1  0 Dec22 ?        00:00:21 /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d

root      72255  72099  0 11:48 pts/0    00:00:00 grep nrpe

3.在服务端测试

\[root@nagios services\]\# /usr/local/nagios/libexec/check\_nrpe -H 10.89.1.34 -c check\_passwd

passwd is ok

添加服务脚本

\[root@nagios ~\]\#cd /usr/local/nagios/etc/objects/

\[root@nagios objects\]\# vi services.cfg

\#在后面添加

define service\{

use               generic-service

host\_name           1.34-web-lnmp

service\_description    check\_passwd

check\_command        check\_nrpe!check\_passwd

检测语法并重新加载/etc/init.d/nagios checkconfig

没有错误的情况下：

\[root@nagios objects\]\# /etc/init.d/nagios reload

4.改变性测试在客户端执行添加用户命令

\[root@weblnmp ~\]\#useradd jack

服务端执行

\[root@nagios services\]\# /usr/local/nagios/libexec/check\_nrpe -H 10.89.1.34 -c check\_passwd

passwd is changed

**nagios--check\_redis监控redis**

\#!/bin/bash

redis\_bin='/home/app/redis/src'

redis\_ip=(192.168.1.161 192.168.1.162 192.168.1.163 192.168.1.164)

redis\_master\_port='6379'

redis\_slave\_port='6380'

for (( i = 0; i < 1; i++ )); do

ALIVE\_master=''$redis\_bin'/redis-cli -h '$\{redis\_ip\[$i\]\}' -p '$redis\_master\_port' ping'

ALIVE\_slave=''$redis\_bin'/redis-cli -h '$\{redis\_ip\[$i\]\}' -p '$redis\_slave\_port' ping'

if \[ \`$ALIVE\_master\` == "PONG" \] && \[ \`$ALIVE\_slave\` == "PONG" \]; then

echo "redis $\{redis\_ip\[$i\]\} is healthy."

exit 0

else

echo "the redis $\{redis\_ip\[$i\]\} 6379 or 6380 is down."

exit 1

done

nagios安装配置

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