CentOS 6.4上通过yum安装Nagios-3.5.0_centos 6.4 nagios-优快云博客

本文详细介绍了如何在CentOS环境下安装、配置Nagios监控系统，包括安装依赖、设置密码、检查配置、开机自启、监控节点配置及NRPE配置等步骤。

  原文见：http://sharadchhetri.com/2013/05/19/installing-
 nagios-
 3-
 5-0-in-centos-6-4-using-
 yum/
 
 #安装：
 
 rpm -ivh http:
 //dl
 .fedoraproject.org
 /pub/epel/6/i386/epel-release-6-8
 .noarch.rpm
 
 yum 
 install 
 nagios nagios-devel nagios-plugins* gd gd-devel httpd php 
 gcc 
 glibc glibc-common openssl
 
 #设置密码， 默认用户名和密码都是nagiosadmin
 
 htpasswd -c 
 /etc/nagios/passwd 
 nagiosadmin 
 #回车然后输入密码
 
 #检查以下配置是否一样：vi /etc/nagios/cgi.cfg
 
 =============================
 
 # AUTHENTICATION USAGE
 
 use_authentication=1
 
 # SYSTEM/PROCESS INFORMATION ACCESS
 
 authorized_for_system_information=nagiosadmin
 
 # CONFIGURATION INFORMATION ACCESS
 
 authorized_for_configuration_information=nagiosadmin
 
 # SYSTEM/PROCESS COMMAND ACCESS
 
 authorized_for_system_commands=nagiosadmin
 
 # GLOBAL HOST/SERVICE VIEW ACCESS
 
 authorized_for_all_services=nagiosadmin
 
 authorized_for_all_hosts=nagiosadmin
 
 # GLOBAL HOST/SERVICE COMMAND ACCESS
 
 authorized_for_all_service_commands=nagiosadmin
 
 authorized_for_all_host_commands=nagiosadmin
 
 #========================================
 
 #设置开机自启动:
 
 chkconfig --level 3 nagios on
 
 chkconfig --level 3 httpd on
 
 #启动：
 
 /etc/init
 .d
 /httpd 
 start
 
 /etc/init
 .d
 /nagios 
 start
 
 #注意SELINUX和IPTABLE 以及你的80端口是否被占用
安装完成，http://ip/nagios 就能看到效果
下面配置要管理的节点：

   #新建这个文件，里面添加要监控的机器
  
   #vi /etc/nagios/conf.d/hosts.cfg
  
   #===================
  
   define host{
  
   use linux-server
  
   host_name mysql-node01
  
   alias 
   mysql-node01
  
   address 192.168.1.110  
   #这个IP是我mysql机器所的IP
  
   }
  
   #=================
  
     #添加被监控机器需要被监控那些项目 
    
     #vi /etc/nagios/conf.d/services.cfg
    
     #===========================
    
     define service{
    
     use generic-service
    
     host_name mysql-node01
    
     service_description PING
    
     check_command check_ping!100.0,20%!500.0,60%
    
     }
    
     define service{
    
     use generic-service
    
     host_name mysql-node01
    
     service_description Current Load
    
     check_command check_nrpe!check_load
    
     }
    
     define service{
    
     use generic-service
    
     host_name mysql-node01
    
     service_description Total Processes
    
     check_command check_nrpe!check_users
    
     }
    
     #===========================
    
     #这里对mysql那台机器进行了3项监控: ping load totalProcesses
    
     #其中ping没用到nrpe
    
       #在末尾为nrpe添加命令
      
       #vi /etc/nagios/objects/commands.cfg
      
       #===========================
      
       define 
       command
       {
      
       command_name check_nrpe
      
       command_line $USER1$
       /check_nrpe 
       -H $HOSTADDRESS$ -c $ARG1$
      
       }
      
       #===========================
      
               #各种重启
              
               /etc/init
               .d
               /nagios 
               restart
              
               /etc/init
               .d
               /nrpe 
               restart
              
               /etc/init
               .d
               /httpd 
               restart
              
注意iptables，服务端和客户端均需要5666端口能被互相访问
参考此文配置客户端：
 原文见：http://sharadchhetri.com/2013/03/02/how-to-install-and-configure-nagios-nrpe-in-centos-and-red-hat/
 
           ?
          
                #安装nrpe
               
                rpm -ivh dl.fedoraproject.org
                /pub/epel/6/i386/epel-release-6-8
                .noarch.rpm
               
                yum 
                install 
                 -y nrpe nagios-plugins-all openssl
               
                #修改配置文件,先备份是好习惯
               
                vi 
                 /etc/nagios/nrpe
                .cfg
               
                #找到allowed_hosts=127.0.0.1，在后面加上server端的IP，这样server端才能监控这台机器，比如我加的：
               
                allowed_hosts=127.0.0.1,192.168.1.103
               
                #开机自启
               
                chkconfig --level 3 on
               
                #启动
               
                /etc/init
                .d
                /nrpe 
                 start
               
配置完后，刷新nagios页面，就能看到mysql-node01了