服务器监控
一：安装前准备nagios server：192.168.1.10
nagios client：192.168.1.11
该博文安装nagios只使用nagios邮件报警功能，如需画图另外安装cacti，或其他插件
二：安装服务
在nagios server上操作：
安装Apache+php
yum install httpd httpd-devel php php-mysql php-common php-gd php-mbstring php-mcrypt php-devel php-xml gcc glibc glibc-common gd gd-devel openssl openssl-devel
groupadd nagios
useradd nagios
useradd -G nagios nagios
usermod -G nagios apache
wget http://sourceforge.net/projects/nagios/?source=directory
tar zxvf nagios-3.2.0.tar.gz
cd nagios-3.2.0
./configure --prefix=/usr/local/nagios --with-command-group=nagios
make all
make install
make install-init
make install-config
make install-commandmode
make install-webconf
htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
service httpd restart
nagios-plugins下载地址：www.nagios.org
tar zxvf nagios-plugins-1.4.14.tar.gz
cd nagios-plugins-1.4.14
./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-group=nagios
make && make install
wget http://sourceforge.net/projects/nagios-cn/files/latest/download
tar -xjf nagios-cn-3.2.3.tar.bz2
cd nagios-cn-3.2.3
./configure
make all
make install
http://sourceforge.net/projects/nagios/files/nrpe-2.x/
tar zxvf nrpe-2.13.tar.gz
cd nrpe-2.13
./configure
make all
make install-plugin
vi /usr/local/nagios/etc/objects/commands.cfg 在最后添加
define command {
command_name check_nrpe
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}
检查配置文件是否正确
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
在被监控主机上操作：
useradd -s /sbin/nologin nagios
tar zxvf nagios-plugins-1.4.14.tar.gz
cd nagios-plugins-1.4.14
./configure --prefix=/usr/local/nagios --with-nagios-user=nagios --with-nagios-group=nagios
make && make install
tar zxvf nrpe-2.13.tar.gz
cd nrpe-2.13
./configure
make all
make install-plugin
make install-daemon
make install-daemon-config
make install-xinetd
yum install xinetd
vim /etc/xinetd.d/nrpe
将only_from = 后面加上监控端的地址：192.168.1.10
确保/etc/services有nrpe 5666/tcp #NRPE这一行，没有则添加
重启xinetd服务，至此被监控端配置完毕
/usr/local/nagios/libexec/check_nrpe -H 被监控端的地址
如能显示 “NRPE v2.12”，表明NRPE可以和被监控端正常通信
安装完毕，接下来开始配置。
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