一.安装环境的配置
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1.关闭防火墙。
[root@Nagios ~]# service iptables stop
2.关闭SELinux
[root@Nagios ~]# vim /etc/selinux/config
将SELINUX=disabled
二.安装必要软件
[root@Nagios ~]# yum -y install wget make openssl openssl-devel httpd php gcc glibc glibc-common gd gd-devel net-snmp MySQL mysql-server mysql-devel perl perl-devel gnutls gnutls-devel
1.Nagios账户及组的添加
useradd nagios
groupadd nagios
usermod -a -G nagios nagios
usermod -a -G nagios apache
2..编译与安装nagios
wget http://jaist.dl.sourceforge.net/project/nagios/nagios-4.x/nagios-4.0.8/nagios-4.0.8.tar.gz
tar jxvf nagios-4.0.8 -C /usr/src/
cd /usr/src/nagios-4.0.8
./configure --prefix=/usr/local/nagios --with-command-group=nagios --with-nagios-user=nagios --with-nagios-group=nagios
make all
make clean
make all
make install
make install-init //服务启动文件
make install-commandmode //命令文件
make install-config //配置
make install-webconf //apache配置
/usr/bin/htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin //输入nagios的web管理密码
[root@Nagios nagios]# cp -R contrib/eventhandlers/ /usr/local/nagios/libexec/
[root@Nagios nagios]# chown -R nagios:nagios /usr/local/nagios/libexec/eventhandlers/
测试nagios的配置文件
[root@Nagios nagios]# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg（最好做成一个脚本文件 随时检查nagios配置）
如果最后出现
Total Warnings: 0
Total Errors: 0
Things look okay - No serious problems were detected during the pre-flight check
就证明nagios配置无误可正常启动！
Nagios plugin的安装
yum -y install gd gd-devel *openssl*
wget http://nagios-plugins.org/download/nagios-plugins-2.0.3.tar.gz
[root@Nagios nagios]# tar zxvf nagios-plugins-2.0.3.tar.gz-C /usr/src/
[root@Nagios nagios]#cd /usr/src/nagios-plugins-2.0.3
[root@Nagios nagios-plugins-2.0.3]# ./configure --with-nagios-user=nagios --with-nagios-group=nagios --enable-extra-opts --enable-perl-modules --enable-libtap
编译成功后，会出现如下信息：
--with-apt-get-command:
--with-ping6-command: /bin/ping6 -n -U -w %d -c %d %s
--with-ping-command: /bin/ping -n -U -w %d -c %d %s
--with-ipv6: yes
--with-mysql: /usr/bin/mysql_config
--with-openssl: yes
--with-gnutls: no
--enable-extra-opts: yes
--with-perl: /usr/bin/perl
--enable-perl-modules: yes
--with-cgiurl: /nagios/cgi-bin
--with-trusted-path: /bin:/sbin:/usr/bin:/usr/sbin
--enable-libtap: yes
[root@Nagios nagios-plugins-2.0.3]# make
[root@Nagios nagios-plugins-2.0.3]# make install
将nagios及httpd加入启动项，并自动启动
[root@Nagios nagios-plugins-2.0.3]# chkconfig --add nagios
[root@Nagios nagios-plugins-2.0.3]# chkconfig --level 35 nagios on
[root@Nagios nagios-plugins-2.0.3]# chkconfig --add httpd
[root@Nagios nagios-plugins-2.0.3]# chkconfig --level 35 httpd on
安装完毕！