Nagios部署

nagios需要依赖lamp环境，全部我们先在nagios服务器上安装配置lamp环境。
[root@pc1 ~]# yum -y install httpd php* mariadb*
解压干系软件
[root@pc1 ~]# cd /root/桌面
[root@pc1 ~]#   tar -zxvf nagios-4.0.1.tar.gz -C /usr/src
[root@pc1 ~]#   tar -zxvf nagios-plugins-1.5.tar.gz -C /usr/src
[root@pc1 ~]#   tar -zxvf nrpe-2.15.tar.gz -C /usr/src
2、安装依赖环境

yum -y install openssl-devel
3、编译安装nagois

[root@localhost ~]# useradd -M -s /sbin/nologin nagios
[root@localhost ~]# mkdir /usr/local/nagios
[root@localhost ~]# chown -R nagios:nagios /usr/local/nagios/
[root@localhost ~]# cd /usr/src/nagios-4.0.1/
配置编译环境
    [root@pc1 nagios-4.0.1]# yum -y install gcc*
[root@localhost nagios-4.0.1]#  ./configure --prefix=/usr/local/nagios
编译安装
[root@localhost nagios-4.0.1]# make all
[root@localhost nagios-4.0.1]# make install
[root@localhost nagios-4.0.1]# make install-init
[root@localhost nagios-4.0.1]# make install-commandmode
[root@localhost nagios-4.0.1]# make install-config
make install #安装主程序，CGI和HTML文件
make install-init #在/etc/rc.d/init.d安装启动脚本
make install-commandmode #安装command模板
make install-config #安装示例配置文件

6、编译安装nagios-plugins:

[root@localhost nagios-4.0.1]#   cd  /usr/src/nagios-plugins-1.5
[root@pc1 nagios-plugins-1.5]#  ./configure --prefix=/usr/local/nagios
[root@pc1 nagios-plugins-1.5]#   make && make install
7、编译安装nrpe：

[root@pc1 nagios-plugins-1.5]#  cd  /usr/src/nrpe-2.15/
[root@pc1 nrpe-2.15]#   ./configure && make all
[root@pc1 nrpe-2.15]#  make install-plugin
8、配置httpd.conf

添加nagios的访问界面
[root@pc1 nrpe-2.15]# vim  /etc/httpd/conf/httpd.conf
在末了面添加：

ScriptAlias /nagios/cgi-bin/ "/usr/local/nagios/sbin/" <Directory "/usr/local/nagios/sbin">     Options Indexes FollowSymLinks     AllowOverride None     Require all granted </Directory> Alias /nagios "/usr/local/nagios/share" <Directory "/usr/local/nagios/share">     Options Indexes FollowSymLinks     AllowOverride None     Require all granted </Directory>

9、设置页面访问认证：

[root@localhost ~]# vim /usr/local/nagios/etc/cgi.cfg
修改：

use_authentication=0 （0：允许访问全部页面。1：禁止）

[root@pc1 nrpe-2.15]# systemctl restart httpd
[root@pc1 nrpe-2.15]# systemctl restart mariadb
+++++++++++++++++++++++++++++++++++++++++++++++++++++



pc2    被控端设置

1、安装依赖环境

[root@localhost ~]# yum -y install openssl openssl-devel gcc*
[root@localhost ~]# useradd -M -s /sbin/nologin nagios
安装nagios-plugins
    [root@localhost ~]#  cd  /root/桌面
[root@localhost ~]# tar -zxvf nagios-plugins-1.5.tar.gz -C /usr/src/
[root@localhost ~]# cd /usr/src/nagios-plugins-1.5/
[root@localhost nagios-plugins-1.5]#  ./configure --prefix=/usr/local/nagios
[root@localhost nagios-plugins-1.5]#  make && make install
[root@localhost nagios-plugins-1.5]#  chown -R nagios:nagios /usr/local/nagios/
3、安装nrpe

[root@localhost ~]# tar -zxvf  /root/桌面/nrpe-2.15.tar.gz -C /usr/src/
[root@localhost ~]# cd /usr/src/nrpe-2.15/
[root@localhost nrpe-2.15]# ./configure --prefix=/usr/local/nagios/
[root@localhost nrpe-2.15]# make all
[root@localhost nrpe-2.15]# make install-plugin
[root@localhost nrpe-2.15]# make install-daemon
[root@localhost nrpe-2.15]# make install-daemon-config
4、配置

[root@localhost nrpe-2.15]# vim /usr/local/nagios/etc/nrpe.cfg
修改：

allowed_hosts=127.0.0.1,192.168.1.1 //添加监控服务器的IP地址

[root@localhost nrpe-2.15]#  /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d   //启动nrpe
[root@localhost nrpe-2.15]# netstat -anp | grep nrpe   //端标语是TCP5666
5、安装测试服务

[root@localhost ~]# yum -y install httpd vsftpd bind dhcp
[root@pc2 nrpe-2.15]# systemctl restart httpd
[root@pc2 nrpe-2.15]# systemctl restart named
[root@pc2 nrpe-2.15]# systemctl restart vsftpd
将以上为举行简单的配置，并启动服务
pc1添加被监控客户端的测试选项
[root@pc1 nrpe-2.15]# cd /usr/local/nagios/etc/
cp  -p objects/localhost.cfg  objects/192.168.1.2.cfg
vim  objects/192.168.1.2.cfg
修改：
删除或者注释host group 选项
define host{
        use                     linux-server
        host_name               server2
        alias                   server2
        address                 192.168.1.2             //30行  将127.0.0.1修改为192.168.1.2
        }
更换全部模块中的host_name 的名称为server2
:% s/localhost/server2/g
添加模块：
define service{
        use                            local-service
        host_name                      server2
        service_description              FTP
        check_command                 check_ftp
        notifications_enabled            0
        }
define service{
        use                            local-service
        host_name                      server2
        service_description              DHCP
        check_command                  check_dhcp
        notifications_enabled            0
        }
define service{
        use                            local-service
        host_name                      server2
        service_description             DNS
        check_command                  check_dns
        notifications_enabled            0
        }
7、配置nagios.cfg，添加监控节点

vim  /usr/local/nagios/etc/nagios.cfg
添加：
cfg_file=/usr/local/nagios/etc/objects/192.168.1.2.cfg
8、重启服务

killall -9 nagios
systemctl  start nagios &
若无法启动，实验另一种启动方式
/etc/init.d/nagios start
Reloading systemd:                                         [  确定  ]
Starting nagios (via systemctl):

• 查看监控效果
  

pc1   访问192.168.1.1/nagios


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