(一）安装Nagios   （Nagios服务器为：192.168.6.6    Nagios客户端为： 192.168.2.33）

1.基础支持套件：gcc glibc glibc-common gd gd-devel xinetd openssl-devel httpd php   注：php和httpd均用源码包安装，安装配置方法此处不在详述

# yum install -y gcc glibc glibc-common gd gd-devel xinetd openssl-devel

2.创建Nagios账户和组

#useradd -m nagios

#groupadd nagcmd#usermod -a -G nagcmd nagios#usermod -a -G nagcmd apache

3.编译安装

#tar xvf nagios-3.5.1.tar.gz

#cd nagios-3.5.1#./configure prefix=/usr/local/nagios --with-command-group=nagcmd --with-nagios-user=nagios --with-nagios-group=nagios#make all#make install#make install-init        （生成init启动脚本）#make install-config      （生成一些模板配置文件）#make install-commandmode （设置相应的权限）#make install-webconf     （生成Apache配置文件nagios.conf）

4.为Nagios设置Web验证的密码

#/usr/local/apache/bin/htpasswd -c /usr/local/nagios/etc/htpasswd.user nagiosadmin

5.设置Nagios的开机启动

chkconfig --add nagios

chkconfig nagios on

6.安装Nagios的插件nagios-plugin

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

#cd nagios-plugins-1.4.16#./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-group=nagios --with-apt-get-command --with-ping6-command --with-ping-command --with-mysql --with-gnutls --enable-extra-opts#make #make install

7.此时完成初步安装，可以监控查看本机的一些服务，检测配置文件并启动nagios

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

Nagios Core 3.5.1

Copyright (c) 2009-2011 Nagios Core Development Team and Community ContributorsCopyright (c) 1999-2009 Ethan GalstadLast Modified: 08-30-2013License: GPL

Website:

Reading configuration data...   Read main config file okay...Processing object config file '/usr/local/nagios/etc/objects/commands.cfg'...Processing object config file '/usr/local/nagios/etc/objects/contacts.cfg'...Processing object config file '/usr/local/nagios/etc/objects/timeperiods.cfg'...Processing object config file '/usr/local/nagios/etc/objects/templates.cfg'...Processing object config directory '/usr/local/nagios/etc/servers'...Processing object config file '/usr/local/nagios/etc/servers/localhost.cfg'...   Read object config files okay...

Running pre-flight check on configuration data...

Checking services...

 Checked 6 services.Checking hosts... Checked 1 hosts.Checking host groups... Checked 0 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

出现此处，表明，配置文件没有错误，可以启动nagios和apache

#service nagios start

#/usr/local/apache/sbin/apchectl

访问nagios

 

此时提示页面无法访问，原因在于由于Apache是源码包安装，默认路径和rpm包不一样，需要在Apache的httpd.conf配置文件中添加指定访问路径

8. 配置apache并加载nagios登录页面  找到apache 的配置文件/usr/local/apache/conf/httpd.conf

找到：

User daemon

Group daemon 修改为

User nagios

Group nagios

为了安全起见，一般情况下要让nagios 的web 监控页面必须经过授权才能访问，这需要增加验证配置，即在httpd.conf 文件最后添加如下信息：

下面信息在编译nagios(make install-webconf )时就已经生成，配置信息在：/etc/httpd/confd.d/nagios.conf 文件中

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

#setting for nagiosScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"     AuthType Basic     Options ExecCGI     AllowOverride None     Order allow,deny      Allow from all      AuthName "Nagios Access"     AuthUserFile /usr/local/nagios/etc/htpasswd.user     Require valid-userAlias /nagios "/usr/local/nagios/share"     AuthType Basic     Options None     AllowOverride None     Order allow,deny      Allow from all      AuthName "nagios Access"     AuthUserFile /usr/local/nagios/etc/htpasswd.user     Require valid-user###########################################################################

9.重启nagios、apache并访问nagios

#service nagios restart

#/usr/local/apache/bin/apachectl restart

提示输入用户名密码，访问成功

但是登陆进去后，nagios页面右侧全部乱码

解决方法：

主要是apache没有开启cgi脚本的缘故

进入apache的主配置文件httpd.conf

#vim /usr/local/apache/conf/httpd.conf #LoadModule cgid_module modules/mod_cgid.so#LoadModule actions_module modules/mod_actions.so

将上面2行的#去掉，重启apache就OK

再次访问 ，乱码消失OK！

(二）配置Nagios

1.nagios配置目录信息

# cd /usr/local/nagios/etc/

# lscgi.cfg  htpasswd.user  nagios.cfg  objects  resource.cfg[root@localhost etc]# lltotal 68-rw-rw-r-- 1 nagios nagios 11669 Nov 29 14:18 cgi.cfg （CGI配置文件）-rw-r--r-- 1 root   root      50 Nov 29 14:20 htpasswd.user （Apache的验证密码文件）-rw-rw-r-- 1 nagios nagios 44710 Nov 29 14:18 nagios.cfg （主配置文件）drwxrwxr-x 2 nagios nagios  4096 Nov 29 14:18 objects （对象定义文件目录）-rw-rw---- 1 nagios nagios  1340 Nov 29 14:18 resource.cfg （资源配置文件）

2.修改nagios.cfg主配置文件

#vim nagios.cfg

注释掉：cfg_file=/usr/local/nagios/etc/objects/localhost.cfg  ———— #cfg_file=/usr/local/nagios/etc/objects/localhost.cfg

将 #cfg_dir=/usr/local/nagios/etc/servers  的 #（注释）去掉 -----  cfg_dir=/usr/local/nagios/etc/servers

在/usr/local/nagios/etc/目录中新建 servers子目录，在里面可以直接添加主机配置文件

#mkdir servers

3.配置object目录中的配置文件

#cd objects/

#lltotal 48-rw-rw-r-- 1 nagios nagios  7716 Nov 29 14:18 commands.cfg （命令定义文件）-rw-rw-r-- 1 nagios nagios  2166 Nov 29 14:18 contacts.cfg （联系人信息定义文件）-rw-rw-r-- 1 nagios nagios  5403 Nov 29 14:18 localhost.cfg-rw-rw-r-- 1 nagios nagios  3124 Nov 29 14:18 printer.cfg-rw-rw-r-- 1 nagios nagios  3293 Nov 29 14:18 switch.cfg-rw-rw-r-- 1 nagios nagios 10812 Nov 29 14:18 templates.cfg-rw-rw-r-- 1 nagios nagios  3208 Nov 29 14:18 timeperiods.cfg （时间周期定义文件）-rw-rw-r-- 1 nagios nagios  4019 Nov 29 14:18 windows.cfg

配置联系人信息(邮件接收者邮箱地址）

联系人定义：

#vim contacts.cfg将 email 字段后边的    改成自己的邮箱，将报警信息发送的此邮箱，比如   如果是设置提醒多个邮箱可以在后跟其它邮箱地址，以逗号隔开，比如：

保存，退出。

（三）nrpe安装配置

1.安装nrpe

#tar zxvf nrpe-2.12.tar.gz

#cd nrpe-1.12# ./configure && make all#make install-plugin#make install-daemon#make install-daemon-config#make install-xinetd

2.配置nrpe

#vim /etc/xinetd.d/nrpe

在only_from=127.0.0.1 后添加 192.168.6.6 以空格隔开

3.添加端口

#vim /etc/services       在最后添加   nrpe  5666/tcp   #nrpe

修改配置文件/usr/local/nagios/etc/objects/commands.cfg加入对nrpe的支持

#vim /usr/local/nagios/etc/objects/commands.cfg     在末尾添加如下内容

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

#nrpe set define command{ command_name check_nrpe command_line /usr/local/nagios/libexec/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ } ##############################################################################

4.配置/usr/local/nagios/etc/nrpe.cfg 文件

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

#vim nrpe.cfg将command[check_hda1]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/hda1 中的hda1改为: sda  如下：command[check_sda]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/sda

将command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 150 -c 200  改为：

  command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 400 -c 450

添加 command[check_swap]=/usr/local/nagios/libexec/check_swap -w 90% -c 80%

保存，退出。

重启xinetd服务

OK，Nagios服务端安装成功！！！

 

（四）Nagios客户端安装配置

#yum install -y openssl openssl-devel

#useradd -s /sbin/nlogin nagios

2.安装nagios-plugin

# cd /opt/software/

#tar zxvf nagios-plugins-1.4.16.tar.gz#cd nagios-plugin-1.4.16#./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-group=nagios --enable-libtap--enable-redhat-pthread-workaround --with-apt-get-command --with-ping6-command --with-ping-command --with-mysql --with-gnutls --enable-extra-opts --with-openssl --with-trusted-path#make#make install

3.安装配置nrpe

#yum install xinetd -y

#tar zxvf nrpe-2.12.tar.gz

#cd nrpe-2.12#./configure && make all#make install-plugin#make install-daemon #make install-daemon-config #make install-xinetd

#vim /etc/xinetd.d/nrpe 

在only_from    = 127.0.0.1 后添加 nagios服务器端IP地址 192.168.6.6 如下：  only_from    = 127.0.0.1 192.168.6.6

#vim /etc/services

在文件末尾添加 nrpe   5666/tcp      #nrpe

修改/usr/local/nagios/etc/nrpe.cfg

#cp -p  /usr/local/nagios/etc/nrpe.cfg    /usr/local/nagios/etc/nrpe.cfg.default   -修改前先备份一下该配置文件

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

将nrpe.cfg文件中的 hda1 字符全部修改为 sda  或者使用sed命令批量修改，如下：sed  -i 's/hda1/sda/g'  /usr/local/nagios/etc/nrpe.cfg

添加swep分区监控：  command[check_swap]=/usr/local/nagios/libexec/check_swap -w 90% -c 80%

保存，退出。

重启xinetd服务 ：

#service xinetd restart 

（五） 在服务端/usr/local/nagios/etc/servers/目录中添加编辑被监控主机配置文件

1.本地主机配置文件模版

#cd /usr/local/nagios/etc/servers

#touch localhost.cfg   注：localhost.cfg 为本地主机配置文件#vim localhost.cfg   添加如下模版内容###########################################################################################define  host

define host{

host_name 192.168.6.6-nagios server     #主机名称，可随便定义alias nagios Server                     #服务器别名，监控端为Server 被监控端为 Clientaddress 192.168.6.6                     #服务器端IP地址 或者被监控端IP地址check_command check-host-alive          #检查的命令check_interval 1 #retry_interval 1 max_check_attempts 1 check_period 24x7                       #检查的时间范围process_perf_data 0 retain_nonstatus_information 0 contact_groups admins                   #联系人组notification_interval 10                #检查时间间隔，单位为分钟 notification_period 24x7 notification_options d,u,r              #通知选项，d-宕机(down)  w-报警(warning)  u-未知（unkown) c-严重（critical) r-从异常情况恢复}

#define services

#define check-host-alive

define service { host_name 192.168.6.6-nagios server service_description check-host-alive check_period 24x7 max_check_attempts 1 normal_check_interval 1 #retry_check_interval 1 contact_groups admins notification_interval 10 notification_period 24x7 notification_options w,u,c,r check_command check-host-alive }

define service {

host_name 192.168.6.6-nagios server service_description check-users check_period 24x7 max_check_attempts 4 normal_check_interval 1 retry_check_interval 1 contact_groups admins notification_interval 10 notification_period 24x7 notification_options w,u,c,r check_command check_nrpe!check_users }

define service {

host_name 192.168.6.6-nagios server service_description check-load check_period 24x7 max_check_attempts 4 normal_check_interval 1 retry_check_interval 1 contact_groups admins notification_interval 10 notification_period 24x7 notification_options w,u,c,r check_command check_nrpe!check_load }

define service {

host_name 192.168.6.6-nagios server service_description check-total-procs check_period 24x7 max_check_attempts 4 normal_check_interval 1 retry_check_interval 1 contact_groups admins notification_interval 10 notification_period 24x7 notification_options w,u,c,r check_command check_nrpe!check_total_procs }

define service {

host_name 192.168.6.6-nagios serverservice_description check_sdacheck_period 24x7max_check_attempts 4normal_check_interval 1retry_check_interval 1contact_groups adminsnotification_interval 10notification_period 24x7notification_options w,u,c,rcheck_command check_nrpe!check_sda}

define service {

host_name 192.168.6.6-nagios serverservice_description check_swapcheck_period 24x7max_check_attempts 4normal_check_interval 1retry_check_interval 1contact_groups adminsnotification_interval 10notification_period 24x7notification_options w,u,c,rcheck_command check_nrpe!check_swap}########################################################################################

2.其它主机配置文件模版

#cd /usr/local/nagios/etc/servers/

#touch 192.168.2.33.cfg#vim 192.168.2.33.cfg   添加如下内容

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

#define  host

define host{

host_name 192.168.2.33-Test alias nagios Client address 192.168.2.33 check_command check-host-alive check_interval 1 #retry_interval 1 max_check_attempts 1 check_period 24x7 process_perf_data 0 retain_nonstatus_information 0 contact_groups admins notification_interval 10 notification_period 24x7 notification_options d,u,r }

#define check-host-alive

define service { host_name 192.168.2.33-Test service_description check-host-alive check_period 24x7 max_check_attempts 1 normal_check_interval 1 #retry_check_interval 1 contact_groups admins notification_interval 10 notification_period 24x7 notification_options w,u,c,r check_command check-host-alive }

define service {

host_name 192.168.2.33-Test service_description check-users check_period 24x7 max_check_attempts 4 normal_check_interval 1 retry_check_interval 1 contact_groups admins notification_interval 10 notification_period 24x7 notification_options w,u,c,r check_command check_nrpe!check_users }

define service {

host_name 192.168.2.33-Test service_description check-load check_period 24x7 max_check_attempts 4 normal_check_interval 1 retry_check_interval 1 contact_groups admins notification_interval 10 notification_period 24x7 notification_options w,u,c,r check_command check_nrpe!check_load }

define service {

host_name 192.168.2.33-Testservice_description check-total-procs check_period 24x7 max_check_attempts 4 normal_check_interval 1 retry_check_interval 1 contact_groups admins notification_interval 10 notification_period 24x7 notification_options w,u,c,r check_command check_nrpe!check_total_procs }

define service {

host_name 192.168.2.33-Testservice_description check_sdacheck_period 24x7max_check_attempts 4normal_check_interval 1retry_check_interval 1contact_groups adminsnotification_interval 10notification_period 24x7notification_options w,u,c,rcheck_command check_nrpe!check_sda}

define service {

host_name 192.168.2.33-Testservice_description check_swapcheck_period 24x7max_check_attempts 4normal_check_interval 1retry_check_interval 1contact_groups adminsnotification_interval 10notification_period 24x7notification_options w,u,c,rcheck_command check_nrpe!check_swap}##############################################################################################

3.监控服务器监控运行的端口

（1）Nagios客户端配置

#vim /usr/local/nagios/etc/nrpe.cfg  文件末尾添加定义端口信息，如下：

command[check_TemplateUpload:8080]=/usr/local/nagios/libexec/check_tcp -H localhost -p 8080  -w 120 -c 180

保存，退出

重启xinetd服务

#service xinetd restart

（2）Nagios服务端配置

#vim /usr/local/nagios/etc/services/192.168.2.33.cfg 文件末尾添加如下内容

define service {

host_name 192.168.2.33-Testservice_description check_TemplateUpload:8080  check_period 24x7max_check_attempts 4normal_check_interval 1retry_check_interval 1contact_groups adminsnotification_interval 10notification_period 24x7notification_options w,u,c,rcheck_command check_nrpe!check_TemplateUpload:8080}

保存，退出

重启nagios服务

#service nagios restart

访问Nagios服务

大功告成！！！！！