Nagios服务端和客户端安装与配置

IP	Hostname	备注
192.168.88.31	server	nagios服务端
192.168.88.32	client	nagios客户端

环境说明：firewalld关闭，selinux关闭。

软件版本：
nagios版本：4.4.3
nagios-plugins版本：2.2.1
nrpe版本：3.2.1

安装nagios-server服务端
安装所需依赖包

[root@server ~]# yum -y install httpd httpd-devel php gcc glibc glibc-common gd gd-devel perl-devel unzip perl-CPAN  perl-FCGI 

安装配置nagios

[root@server ~]# tar -zxvf nagioscore-nagios-4.4.3.tar.gz 
[root@server ~]# cd nagioscore-nagios-4.4.3
[root@server nagioscore-nagios-4.4.3]# useradd nagios -s /sbin/nologin 
[root@server nagioscore-nagios-4.4.3]# groupadd nagcmd
[root@server nagioscore-nagios-4.4.3]# usermod -a -G nagcmd nagios   
[root@server nagioscore-nagios-4.4.3]# usermod -a -G nagcmd apache
[root@ server nagioscore-nagios-4.4.3]# ./configure --with-command-group=nagcmd && make all && make install && make install-init && make install-commandmode && make install-config && make install-webconf
//如果使用nagiosadmin用户登陆则不用修改配置
[root@server nagioscore-nagios-4.4.3]# htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
//如果使用其他用户登陆则需修改cgi.cfg配置，默认登陆用户为nagiosadmin。
[root@server nagioscore-nagios-4.4.3]# sed -i 's#nagiosadmin#nagios#g' /usr/local/nagios/etc/cgi.cfg
[root@server nagioscore-nagios-4.4.3]# htpasswd -c /usr/local/nagios/etc/htpasswd.users nagios
[root@server nagioscore-nagios-4.4.3]# systemctl start httpd
[root@server nagioscore-nagios-4.4.3]# systemctl enable httpd
[root@server nagioscore-nagios-4.4.3]# systemctl start nagios
[root@server nagioscore-nagios-4.4.3]# systemctl enable nagios

安装nagios-pluging插件

[root@server ~]# tar -zxvf nagios-plugins-2.2.1.tar.gz
[root@server ~]# cd nagios-plugins-2.2.1
[root@server nagios-plugins-2.2.1]# ./configure --with-nagios-user=nagios --with-nagios-group=nagios
[root@server nagios-plugins-2.2.1]# make && make install

网页访问http://192.168.88.31/nagios

安装nrpe

[root@server ~]# yum -y install openssl-devel
[root@server ~]# tar -zxvf nrpe-nrpe-3.2.1.tar.gz
[root@server ~]# cd nrpe-nrpe-3.2.1
[root@server ~]# ./configure
[root@server ~]# make all && make install-plugin && make install-daemon && make install-config
[root@server ~]# cp sample-config/nrpe.cfg /usr/local/nagios/etc/nrpe.cfg
[root@server ~]# /usr/local/nagios/bin/nrpe -d -c /usr/local/nagios/etc/nrpe.cfg  //启动nrpe
[root@server ~]# echo "/usr/local/nagios/bin/nrpe -d -c /usr/local/nagios/etc/nrpe.cfg" >> /etc/rc.local  //设置开机执行
[root@server ~]# chmod +x /etc/rc.d/rc.local
[root@server ~]# netstat -lnput|grep 5666

安装nagios-client客户端
安装nagios-pluging插件

[root@client ~]# yum -y install openssl-devel gcc perl-devel perl-CPAN
[root@client ~]# useradd nagios -s /sbin/nologin 
[root@client ~]# tar -zxvf nagios-plugins-2.2.1.tar.gz
[root@client ~]# cd nagios-plugins-2.2.1
[root@client nagios-plugins-2.2.1]# ./configure --with-nagios-user=nagios --with-nagios-group=nagios
[root@client nagios-plugins-2.2.1]# make && make install

安装nrpe

[root@client ~]# tar -zxvf nrpe-nrpe-3.2.1.tar.gz
[root@client ~]# cd nrpe-nrpe-3.2.1
[root@client ~]# ./configure
[root@client ~]# make all && make install-plugin && make install-daemon && make install-config
[root@client ~]# cp sample-config/nrpe.cfg /usr/local/nagios/etc/nrpe.cfg
[root@client ~]# /usr/local/nagios/bin/nrpe -d -c /usr/local/nagios/etc/nrpe.cfg  //启动nrpe
[root@client ~]# echo "/usr/local/nagios/bin/nrpe -d -c /usr/local/nagios/etc/nrpe.cfg" >> /etc/rc.local  //设置开机执行
[root@client ~]# chmod +x /etc/rc.d/rc.local
[root@client ~]# netstat -lnput|grep 5666

修改nrpe配置文件

[root@client ~]# vi /usr/local/nagios/etc/nrpe.cfg
allowed_hosts=127.0.0.1,192.168.88.31   //修改此处，加上服务端ip

重启nrpe

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[root@client ~]# pkill nrpe
[root@client ~]# /usr/local/nagios/bin/nrpe -d -c /usr/local/nagios/etc/nrpe.cfg 

客户端测试本地连接

[root@client ~]# /usr/local/nagios/libexec/check_nrpe -H localhost
NRPE v3.1.0

服务端测试客户端是否连接

[root@client ~]# /usr/local/nagios/libexec/check_nrpe -H 192.168.88.32
NRPE v3.1.0