一、安装编译环境和ssl（被监控机） 1.1、yum install make gcc gcc-c++ xinetd openssl openssl-devel –y 1.2、添加用户名和用户组 /usr/sbin/useradd nagios /usr/sbin/groupadd nagcmd /usr/sbin/usermod -G nagcmd nagios 二、安装nagios插件(被监控机) tar -zxvf nagios-plugins-1.4.11.tar.gz -C /usr/local cd /usr/local/nagios-plugins-1.4.11/ ./configure make make install 三、安装nrpe插件（被监控机） tar -zxvf nrpe-2.12.tar.gz -C /usr/local/ cd /usr/local/nrpe-2.12/ ./configure make all make install make install-plugin make install-daemon //安装守护进程 make install-daemon-config //安装配置文件 make install-xinetd //安装xinetd脚本 四、在监控服务器上添加需要监控的对象（监控主机） 假设需要对ip为$otherhost 定义监控组为$nagiosgroup的主机进行监控 vim /usr/local/nagios/etc/objects/"$nagiosgroup".cfg ######### HOST DEFINITION##################### # Define a host for the local machine define host{ use linux-server host_name $otherhost-$nagiosgroup #被监控主机的名称 alias $otherhost-$nagiosgroup #别名 address $otherhost #被监控主机的IP地址 } ########### HOST GROUP DEFINITION####################### # Define an optional hostgroup for Linux machines define hostgroup{ hostgroup_name $nagiosgroup #主机组名称 alias $nagiosgroup #别名 members $otherhost-$nagiosgroup #组的成员主机,多个主机以逗号相隔,必须是上面定义的 } # Define a service to "ping" the local machine define service{ use local-service #use表示引用，也就是将主机local-service的所有属性引用到linux-server中来 host_name $otherhost-$nagiosgroup #被监控的主机在上面中定义的 service_description PING #这个监控项目的描述,显示在web页面中 check_command check_ping!100.0,20%!500.0,60% #所用的命令,是commands.cfg中定义的 check_period 24x7 #监控的时间段,是timeperiods.cfg中定义的 max_check_attempts 3 #重试的次数 normal_check_interval 20 #循环检查的间隔时间,单位是分钟 retry_check_interval 1 #重试检查时间间隔，单位是分钟 notification_options w,u,c,r #在监控的结果是wucr时通知联系人 notification_interval 20 #在主机出现异常后，故障一直没有解决，nagios再次对使用者发出通知的时间。单位是分钟 notification_period 24x7 #通知的时间段 contacts test_ztc #联系人组,是contact.cfg中定义的 } ################ssh################ define service{ use local-service host_name $otherhost-$nagiosgroup service_description SSH check_command check_ssh check_period 24x7 max_check_attempts 3 normal_check_interval 20 retry_check_interval 1 notification_options w,u,c,r notification_interval 30 notification_period 24x7 contacts test_ztc } #*****http******* define service{ use local-service ; Name of service template to use host_name $otherhost-$nagiosgroup service_description HTTP check_command check_http check_period 24x7 max_check_attempts 3 normal_check_interval 20 retry_check_interval 1 notification_options w,u,c,r notification_interval 30 notification_period 24x7 contacts test_ztc } #********cpu load************ define service{ use local-service ; Name of service template to use host_name $otherhost-$nagiosgroup service_description Current Load check_command check_nrpe!check_load check_period 24x7 max_check_attempts 3 normal_check_interval 20 retry_check_interval 1 notification_options w,u,c,r notification_interval 30 notification_period 24x7 contacts test_ztc } #********swap********** define service{ use local-service host_name $otherhost-$nagiosgroup service_description swap check_command check_nrpe!check_swap check_period 24x7 max_check_attempts 3 normal_check_interval 20 retry_check_interval 2 notification_options w,u,c,r notification_interval 30 notification_period 24x7 contacts test_ztc } #**********mem define service{ use local-service ; Name of service template to use host_name $otherhost-$nagiosgroup service_description check mem check_command check_nrpe!check_mem check_period 24x7 max_check_attempts 3 normal_check_interval 20 retry_check_interval 2 notification_options w,u,c,r notification_interval 30 notification_period 24x7 contacts test_ztc } #*************/*************** define service{ use local-service host_name $otherhost-$nagiosgroup service_description / Partition check_command check_nrpe!check_root check_period 24x7 max_check_attempts 3 normal_check_interval 20 retry_check_interval 2 notification_options w,u,c,r notification_interval 30 notification_period 24x7 contacts test_ztc } ###########users##### define service{ use local-service host_name $otherhost-$nagiosgroup service_description check users check_command check_nrpe!check_users check_period 24x7 max_check_attempts 3 normal_check_interval 20 retry_check_interval 2 notification_options w,u,c,r notification_interval 30 notification_period 24x7 contacts test_ztc } ###########proc############ define service{ use local-service host_name $otherhost-$nagiosgroup service_description check process check_command check_nrpe!check_total_procs check_period 24x7 max_check_attempts 3 normal_check_interval 20 retry_check_interval 2 notification_options w,u,c,r notification_interval 30 notification_period 24x7 contacts test_ztc } 五、将”$nagiosgroup”.cfg 加入nagios主配置文件中（监控主机） # pwd /usr/local/nagios/etc [root@localhost etc]# vi nagios.cfg # Definitions for monitoring the local (Linux) host cfg_file=/usr/local/nagios/etc/objects/localhost.cfg cfg_file=/usr/local/nagios/etc/objects/"$nagiosgroup".cfg 六、被监控机上添加监控私有服务的command vi nrpe.cfg command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10 command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20 command[check_mem]=/usr/local/nagios/libexec/check_mem.sh -w 6 -c 2 command[check_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10 -s Z command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 150 -c 200 command[check_date]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /data command[check_swap]=/usr/local/nagios/libexec/check_swap -w 70% -c 60% command[check_root]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p / 七、配置nrpe （被监控机） 7.1添加nrpe对应端口 vi /etc/services nrpe 5666/tcp # NRPE 7.2*配置nrpe /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 10.1.1.45 } 7.3启动nrpe service xinetd restart netstat -anptl | grep 5666 tcp 0 0 0.0.0.0:5666 0.0.0.0:* LISTEN 21403/xinetd 7.4测试nrpe ./check_nrpe -H localhost NRPE v2.12 7.5监控主机端测试nrpe ./check_nrpe -H ip（被监控机ip） NRPE v2.12 7.6监控主机检查配置 /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg 7.7监控主机重启服务 service nagios reload 对linux主机的监控部署完毕，如需添加新的监控对象可照此添加。