测试环境

主监控机：CentOS 7.5 192.168.131.10被监控机：CentOS 6.2 192.168.131.20安装包：nagios-3.5.1.tar.gznrpe-2.15.tar.gznagios-plugins-2.1.1.tar.gz  主机:192.168.131.10配置1.安装依赖包yum install -y gcc glibc glibc-common php gd gd-devel libpng libmng libjpeg zlibsystemctl start httpd2.添加nagios用户useradd nagiosgroupadd nagcmdusermod -G nagcmd apache3.二进制包安装nagiosmkdir /opt/nagiostar zxvf nagios-3.5.1.tar.gz -C /opt/nagioscd /opt/nagios./configure  --with-command-group=nagcmdmake allmake install && make install-init && make install-commandmode && make install-config && make install-webconf 

//make install #安装生成/usr/local/nagios/，其中/usr/local/nagios/share即nagiosWEB 访问界面的站点目录

//make install-init                #安装生成/etc/rc.d/init.d/nagios  启动脚本//make install-config                  #安装生成/usr/local/nagios/etc下的nagios相关配置文件//make install-commandmode   #设定相应nagios工作目录的权限//make install-webconf               #安装Nagios的WEB配置文件到Apache的conf.d目录下认识一下nagios的配置文件 vim /usr/local/nagios/etc/nagios.cfg*logfile=/var/log/nagios/nagios.log                        #日志位置cfgfile=/etc/nagios/objects/commands.cfg          #这个文件定义了很多命令cfgfile=/etc/nagios/objects/contacts.cfg                   #定义联系人，怎么联系cfgfile=/etc/nagios/objects/timeperiods.cfg                #定义了时间段cfgfile=/etc/nagios/objects/templates.cfg                  #模板（联系人，主机，时间）cfgfile=/etc/nagios/objects/localhost.cfg                  #监控本机相关配置文件#cfgfile=/etc/nagios/objects/windows.cfg                   #windows，默认不监控#cfgfile=/etc/nagios/objects/switch.cfg                    #交换机路由器监控，默认不监控#cfgfile=/etc/nagios/objects/printer.cfg                   #打印机监控，默认不监控 #cfgdir=/etc/nagios/servers                                #定义了服务合集（多个使用）#cfgdir=/etc/nagios/printers                               #定义了打印机合集（多个使用）#cfgdir=/etc/nagios/switches                               #定义了交换合集（多个使用）#cfgdir=/etc/nagios/routers                                #定义了路由合集（多个使用） resourcefile=/etc/nagios/private/resource.cfg 资源变量配置文件，包括$USER1$变量（一个路径）等statusupdateinterval=10                                   #状态更新时间，单位slogrotationmethod=d                                       #日志滚动，默认天servicechecktimeout=60                                    #服务检查超时时间hostchecktimeout=30                                   #主机检查超时时间eventhandlertimeout=30                               notificationtimeout=30ocsptimeout=5perfdatatimeout=5**

vim /usr/local/nagios/etc/cgi.cfg

//此配置文件比nagios.cfg优先级高main_config_file= /usr/local/nagios/etc/nagios.cfg             #主配置文件physical_html_path= /usr/local/nagios/share          #物理路径url_html_path=/nagios                               #在URL后面加上/nagios才能访问use_authentication=1                                #使用认证use_ssl_authentication=0                          #不使用sslauthorized_for_system_information=nagiosadmin       #认证用户

Nagios访问测试

systemctl restart httpd访问地址提示需要账户和密码vi /etc/httpd/conf.d/nagios.conf

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

systemctl restart httpd 通过-v参数检测配置文件是否有问题/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg两者参数都为0，表示没有错误，以守护进程方式启动/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg安装nagios-plugins插件为了能够监控mysql，我们要在主监控机上安装mysql客户端yum install mysql mysql-develtar xvf nagios-plugins-2.1.1.tar.gz -C /opt/nagioscd /opt/nagios/nagios-plugins-2.1.1./configure --with-nagios-user=nagios --with-nagios-group=nagcmdmake && make install 重启nagiossystemctl restart httpd; /etc/init.d/nagios restart浏览器测试：登陆之后，点击hosts，可以看到，默认监控的是本机，说明环境nagios监控本机服务器监控本地nfs状态yum -y install nfs-utilscd /usr/local/nagios/etc/objectsvi localhost.cfg

*define service{

        use                             local-service                hostname                       localhost        servicedescription             NFS        checkcommand                   checktcp!2049        }

    #在使用check命令之前，要确保下/usr/local/nagios/libexec/  目录下有没有你需要的check命令，如果有，直接调用，如果没有，检测端口来代替，检测格式：  checktcp!端口号*

重启nagios

/etc/init.d/nagios restart

修改主题的话 把相应主题包解压到 /usr/local/nagios/share/目录下，重启nagios就可以生效

unzip vautour_style.zip -d /usr/local/nagios/share/ nagios监控远程mysql在主监控机192.168.131.10上配置nagios服务vi /usr/local/nagios/etc/nagios.cfg

cfgfile=/usr/local/nagios/etc/objects/localhost.cfg          

 #在这两行下面添加下面两行

cfgfile=/usr/local/nagios/etc/objects/hosts.cfg

cfgfile=/usr/local/nagios/etc/objects/service.cfg

vi /usr/local/nagios/etc/objects/hosts.cfg

define host{

use linux-server #使用的模板名字

hostname sep-mysql #主机名

address 192.168.131.20 #IP地址

}    

vi /usr/local/nagios/etc/objects/service.cfg

define service{

        use       local-service

        hostname         sep-mysql

        servicedescription    MySqlSev

        checkcommand       checkmysql

}   

vi /usr/local/nagios/etc/objects/commands.cfg

define command{

        commandname    checkmysql

        commandline    $USER1$/checkmysql -H $HOSTADDRESS$ -u nagios –p123456 -d nagios

}本机通过该命令测试/usr/local/nagios/libexec/check_mysql -H192.168.131.20 -unagios -p123456 -d nagios

通过nrpe监控外部主机私有信息

客户端的NRPE安装       1：安装nagios- plugins插件       2：安装NRPE（ make install-daemon-config  make install-xinetd）       3：配置我们xinted服务，允许谁来拿数据       4：启动xinetd       5：查看端口是否正常启动解决依赖 监控机和被监控机都安装yum install -y openssl openssl-devel

服务端安装NRPE

tar xvf nrpe-2.15.tar.gz -C /opt/nagioscd /opt/nagios/nrpe-2.15/./configure && make && make installmake install-plugin && make install-daemon                                                       #前者安装插件，后者以守护经常来运行ls /usr/local/nagios/libexec/check_nrpe  #这个命令需要安装nrpe之后才有客户端配置useradd -s /sbin/nologin nagiosgroupadd nagcmdusermod -G nagcmd nagiosyum install -y xinetd tar xvf nagios-plugins-2.1.1.tar.gz -C /opt/nagiostar xvf nrpe-2.15.tar.gz -C /opt/nagioscd /opt/nagios/nagios-plugins-2.1.1/./configure && make && make installcd ../nrpe-2.15/./configure && make && make installmake install-daemon-config         //这里是客户端，不用make-install-pluginmake install-xinetdvim /etc/xinetd.d/nrpe

service nrpe

{         flags           = REUSE        socket_type     = stream        port            =5666        wait            = no        user            = nagios        group           = nagios        server          =/usr/local/nagios/bin/nrpe        server_args     = -c /usr/local/nagios/etc/nrpe.cfg --inetd        log_on_failure  += USERID        disable         = no        only_from       =127.0.0.1 192.168.131.10       }echo "nrpe 5666/tcp # NRPE" >> /etc/services               //端口注册netstat -antup | grep 5666tcp        0      0:::5666                     :::*                LISTEN      68667/xinetd 客户端nrpe命令vim /usr/local/nagios/etc/nrpe.cfgcommand[check_sdc1]=/usr/local/nagios/libexec/check_disk -w 38% -c 35% -p /dev/sdc1#-w为警告 -C为告急  systemctl restart xinetd

服务端手动测试

/usr/local/nagios/libexec/check_nrpe -H192.168.131.20

NRPE v2.15[root@xuegod63 ~]# /usr/local/nagios/libexec/check_nrpe -H192.168.131.20 -c check_sdc1

定义被监控主机

cd /usr/local/nagios/etc/objects/vim hosts.cfgdefine host{         use          linux-server        host_name      sep-mysql        address        192.168.131.20}

定义需要监控的服务

[root@xuegod63 objects]# vim service.cfgdefine service{ use local-servicehost_name sep-mysqlservice_description sdac_Partitioncheck_command check_nrpe!check_sdc1 }

定义NRPE监控命令

vim commands.cfg

define command{         command_name    check_nrpe        command_line    $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$        }$ARG1$ 表示调用后面的参数。

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