基于nrpe监控linux

被监控端安装nrpe监听566端口(依赖nagios-plugins),监控端通过check_nrpe与被监控端通信。在服务端和被监控端都要安装nrpe,区别是在服务端不启动nrpe服务,被监控端要启动nrpe服务。


在被监控主机上配置:

安装开发包组:

                   yum groupinstall –y “Development Tools” “Development Libraries”

添加nagios用户:

                   useradd –s /sbin/nologin nagios

 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 all

                   make install

安装nrpe

                   tar zxf nrpe-2.12.tar.gz

                   cd nrpe-2.12

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

                                      --with-nrpe-group=nagios \

                                      --with-nagios-user=nagios \

                                      --with-nagios-group=nagios \

                                      --enable-command-args \     ##启动向被监控端传递参数

                                      --enable-ssl    ##使用ssl加密

                   make all

                   make install-plugins

                   make install-daemon

                   make install-daemon-config   

 配置nrpe

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

                            allowed_hosts=        ##允许谁发起监听请求,修改这一项                     

启动nrpe

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

 

 为方便nrpe启动,将其写成服务:

                   #!/bin/bash

                   #chkconfig:2345 88 12

 

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

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

 

                   case “$1” in

                            start)

                                     echo –n “Starting NRPE deamon…”

                                     $NRPE –c $NRPECONF –d

                                     echo “done.”

                                     ;;

                            stop)

                                     echo –n “Stopping NRPE deamon…”

                                     pkill –u nagios nrpe

                                     echo “done.”

                                     ;;

                            restart)

                                     $0 stop

                                     sleep 2

                                     $0 start

                                     ;;

                            *)

                                     echo “Usage $0 start|stop|restart”

                                     ;;

                            exec

                   exit 0

 

                   chkconfig –add [上边文件的名字]

 在服务端安装nrpe

                   tar zxf nrpe-2.12.tar.gz

                   cd nrpe-2.12

                   ./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

  测试是否可以通信:

                   cd /usr/local/nagios/libexec

                   ./check_nrpe –H 远程主机ip         ##若返回nrpe版本则通信正常。

 监控配置:

                   cd /etc/nagios/objects

                   vim commands.cfg           ##加入以下内容

                            define command

                            {

                                     command_name check_nrpe

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

                            }

                  

                   cp windows.cfg linhost.cfg     

                   vim linhost.cfg          ##修改为以下内容

                            define host{

                                     use                     linux-server

                                     host_name       linhost

                                     alias                   My Linux Host

                                     address             被监控ip

                            }

                   主机组 hostgroup部分注释掉

                            define service{

                                     use                                        seneric-service

                                     host_name                         linhost

                                     service_description          CHECK USERS

                                     check_command               check_nrpe!check_user

                            }

                   ##以此类推,在被监控端设置了监控哪些项,就在这里添加哪些,形如上边

                            define service{

                                     use                                        seneric-service

                                     host_name                         linhost

                                     service_description          Load

                                     check_command               check_nrpe!check_load

                            }

                            define service{

                                     use                                        seneric-service

                                     host_name                         linhost

                                     service_description          SDA1

                                     check_command               check_nrpe!check_sda1

                            }

 

                   vim nagios.cfg

                            cfg_file=/etc/nagios/objects/linhost.cfg          ##添加这一行        

 

检查语法正确性:

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

 

重启nagios

         service nagios restart

 

效果:

         web页面应该会出现linhost这个新的主机。



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