yum安装nagois

多少年前就装过了，今天再来用yum装一次，都忘干净了~~

主监控机：CentOS 6.5 192.168.0.105
被监控机：CentOS 6.5 192.168.0.107

主监控机设置:
1、安装epel,http,php

wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm 
rpm -ivh epel-release-latest-6.noarch.rpm
yum -y install httpd php

2、安装nagios、nagios-plugin与nrpe (nagios 4.3.4版本)

yum install -y nagios nagios-plugins nagios-plugins-all nagios-plugins-nrpe nrpe
3、启动apache与nagios
/etc/init.d/httpd restart
/etc/init.d/nagios start
4、登陆http://localhost/nagios/，输入用户密码后查看是否正常运行
注：别忘记了nagios后面那个/，不然……

被监控机设置:
1、安装需要软件

wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm 
rpm -ivh epel-release-latest-6.noarch.rpm
yum install -y nagios-plugins nagios-plugins-nrpe nrpe nagios-plugins-load nagios-plugins-disk nagios-plugins-swap

2、配置nrpe

vi /etc/nagios/nrpe.cfg 修改监控机的地址或域名
allowed_hosts=127.0.0.1,192.168.0.105
3、修改/etc/hosts.allow增加主监控机ip
echo 'nrpe:192.168.0.105' >> /etc/hosts.allow
4、启动 NRPE 守护进程：
/usr/sbin/nrpe -c /etc/nagios/nrpe.cfg -d
可以将此命令加入 /etc/rc.local ，以便开机自动启动。
echo "/usr/sbin/nrpe -c /etc/nagios/nrpe.cfg -d" >> /etc/rc.local

以下在主监控机上执行
1、从主监控机上检查 NRPE 是否正常：
/usr/lib64/nagios/plugins/check_nrpe -H 192.168.0.107
输出为NRPE v3.2.0

2. 添加nrpe的定义
vi /etc/nagios/objects/commands.cfg

# 'check_nrpe' command definition
define command{
command_name check_nrpe
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}

3. 增加主监控机配置项vi /etc/nagios/objects/11.cfg

define host{
use linux-server
host_name 192.168.0.107
alias 192.168.0.107
address 192.168.0.107
}
define service{
use generic-service
host_name 192.168.0.107
service_description load
check_command check_nrpe!check_load
}
define service{
use generic-service
host_name 192.168.0.107
service_description PING
check_command check_ping!100.0,20%!200.0,50%
max_check_attempts 5
normal_check_interval 1
}
define service{
use generic-service
host_name 192.168.0.107
service_description FTP
check_command check_ftp!21
max_check_attempts 5
normal_check_interval 1
}
define service{
use generic-service
host_name 192.168.0.107
service_description SSH
check_command check_ssh
max_check_attempts 5
normal_check_interval 1
}
define service{
use generic-service
host_name 192.168.0.107
service_description HTTP
check_command check_http
max_check_attempts 5
normal_check_interval 1
}

并把11.cfg添加到nagios主配置项

echo "cfg_file=/etc/nagios/objects/11.cfg" >> /etc/nagios/nagios.cfg
其他机器如法炮制即可

4. 重启监控机nagios
/etc/init.d/nagios reload
重新打开监控查看，是否已经有新机器上线！

 看看效果

哎！想当年那环境，苦逼的离线安装各种软件。。。。没网真的不行啊！！！！！