Nagios--简单篇

Nagios拓扑图：

Nagios环境准备：

首先关闭iptables selinux

安装需求：

备注：以上的Nagios需要安装http和php提供web页面支持，nrpe需要ssl的支持。

[[email protected] ~]# /etc/init.d/iptables stop
iptables：将链设置为政策 ACCEPT：filter                    
[确定]iptables：清除防火墙规则：                                 
[确定]iptables：正在卸载模块：                                   
[确定]
[[email protected] ~]# setenforce 0
[[email protected] ~]# chkconfig iptables off
[[email protected] ~]# yum -y install httpd php openssl-devel
[[email protected] ~]# useradd -s /sbin/nologin nagios
[[email protected] ~]# mkdir /usr/local/nagios
[[email protected] ~]# chown -R nagios:nagios /usr/local/nagios/
[[email protected] ~]# tar zxf nagios-4.0.1.tar.gz 
[[email protected] ~]# cd nagios-4.0.1
[[email protected] nagios-4.0.1]# ./configure --prefix=/usr/local/nagios &&make all &&make install &&make install-init &&make install-commandmode &&make install-config &&chkconfig --add nagios &&chkconfig --level 35 nagios on

查看nagios是否完成：

安装nagios插件：

安装nrpe

[[email protected] ~]# tar zxf nrpe-2.15.tar.gz 
[[email protected] ~]# cd nrpe-2.15
[[email protected] nrpe-2.15]# ./configure &&make all &&make install-plugin

为了安全起见Nagios的web监控界面需要授权才能访问，即修改如下配置：

[[email protected] ~]# vim /etc/httpd/conf/httpd.conf
ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"
<Directory "/usr/local/nagios/sbin">
Options ExecCGI
AllowOverride None
Allow from all
AuthName "Nagios Access"
AuthType Basic
AuthUserfile /usr/local/nagios/etc/htpasswd.users
Require valid-user
</Directory>
Alias /nagios "/usr/local/nagios/share"
<Directory "/usr/local/nagios/share">
Options None
AllowOverride None
Allow from all
AuthName "Nagios Access"
AuthType Basic
AuthUserfile /usr/local/nagios/etc/htpasswd.users
Require valid-user
</Directory>

创建一个nagios登陆用户，并启动httpd服务。

[[email protected] ~]# /usr/bin/htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadm
New password: 
Re-type new password: 
Adding password for user nagiosadm
[[email protected] ~]# cat /usr/local/nagios/etc/htpasswd.users 
nagiosadm:L6hnKRp4rJZ9U
[[email protected] ~]# /etc/init.d/httpd start

访问测试：

[[email protected] ~]# cd /usr/local/nagios/etc/
[[email protected] etc]# vim nagios.cfg  ###添加如下行
cfg_file=/usr/local/nagios/etc/objects/commands.cfg
cfg_file=/usr/local/nagios/etc/objects/contacts.cfg
cfg_file=/usr/local/nagios/etc/objects/timeperiods.cfg
cfg_file=/usr/local/nagios/etc/objects/templates.cfg
cfg_file=/usr/local/nagios/etc/objects/hostgroups.cfg
cfg_dir=/usr/local/nagios/etc/conf   ##主机配置文件放在此文件夹下