Nginx 是一个很牛的高性能Web和反向代理服务器，它具有很多非常优越的特性：在高连接并发的情况下，Nginx是Apache服务器不错的替代品：Nginx在美国是做虚拟主机生意的老板们经常选择的软件平台之一。能够支持高达 50,000 个并发连接数的响应，感谢Nginx为大家选择了 epoll and kqueue作为开发模型。
Nagios是一款开源的免费网络监视工具，能有效监控Windows、Linux和Unix的主机状态，交换机路由器等网络设置，打印机等。在系统或服务状态异常时发出邮件或短信报警第一时间通知网站运维人员，在状态恢复后发出正常的邮件或短信通知。
1. nagios安装
# wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.2.2.tar.gz
# tar zxvf nagios-3.2.2.tar.gz
# cd nagios-3.2.2
# useradd -m -s /bin/bash nagios
# groupadd nagios
# usermod -G nagios nagios
# groupadd nagcmd
# usermod -a -G nagcmd nagios
# usermod -a -G nagcmd www
# ./configure --prefix=/usr/local/nagios --with-command-group=nagcmd
# make
# make all
# make install
# make install-init # 生成init启动脚本
# make install-config # 安装示例配置相关文件
# make install-commandmode # 设置相应的目录权限
2. nagiox插件安装
# wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.15.tar.gz
# tar zxvf nagios-plugins-1.4.15.tar.gz
# cd nagios-plugins-1.4.15
# ./configure --with-nagios-user=nagios --with-nagios-group=nagios --prefix=/usr/local/nagios
# make
# make install
3. nrpe安装
# apt-get install libssl-dev
# wget http://sourceforge.net/projects/nagios/files/nrpe-2.x/nrpe-2.13/nrpe-2.13.tar.gz
# tar zxvf nrpe-2.12.tar.gz
# cd nrpe-2.12
# ./configure
# make all
# cp src/check_nrpe /usr/local/nagios/libexec/
4.安装配置Nginx
#sudo apt-get install nginx php5-fpm libssl-dev fcgiwrap apache2
# htpasswd -c -m /usr/local/nagios/etc/nagiosAdmin.net nagiosadmin
# 启动服务
# /etc/init.d/php5-fpm start
# /etc/init.d/fcgiwrap start #默认是socket模式，socket文件在/var/run/fcgiwrap.socket
# /etc/init.d/nagios start
# /etc/init.d/nginx start
nagios的完整WEB配置
server {
listen 80;
server_name 1.1.1.2;
root /usr/local/nagios/share;
index index.html index.htm index.php default.html default.htm default.php;
location ~ .*.php?$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME /usr/local/nagios/share$fastcgi_script_name;
auth_basic "nagios admin";
auth_basic_user_file /usr/local/nagios/etc/nagiosAdmin.net;
}
location ~ .*.cgi$ {
root /usr/local/nagios/sbin;
rewrite ^/nagios/cgi-bin/(.*).cgi /$1.cgi break;
fastcgi_pass unix:/var/run/fcgiwrap.socket;
fastcgi_index index.cgi;
fastcgi_param SCRIPT_FILENAME /usr/local/nagios/sbin$fastcgi_script_name;
include fastcgi_params;
auth_basic "nagios admin";
auth_basic_user_file /usr/local/nagios/etc/nagiosAdmin.net;
}
location /nagios {
alias /usr/local/nagios/share;
auth_basic "nagios admin";
auth_basic_user_file /usr/local/nagios/etc/nagiosAdmin.net;
}
location ~ .*.pl$ {
fastcgi_pass unix:/var/run/fcgiwrap.socket;
fastcgi_index index.pl;
fastcgi_param SCRIPT_FILENAME /usr/local/nagios/sbin$fastcgi_script_name;
include fastcgi_params;
}
}
5、Nagios换主题
http://exchange.nagios.org/directory/Addons/Frontends-%28GUIs-and-CLIs%29/Web-Interfaces/Themes-and-Skins/Nuvola-Style/details
下载下来文件，然后解压，把html重命名为share。覆盖/usr/local/nagios/share即可，建立先备份原来的share。
错误总结：
1、安装nrpe的时候报错
checking for SSL libraries... configure: error: Cannot find ssl libraries
解决办法：
#dpkg -L libssl-dev #找到libssl.so文件做个链接
root@node2:/usr/lib# ln -s /usr/lib/x86_64-linux-gnu/libssl.so /usr/lib/libssl.so
2、页面提示
It appears as though you do not have permission to view information for any of the services you requested...
If you believe this is an error, check the HTTP server authentication requirements for accessing this CGI
and check the authorization options in your CGI configuration file.
解决办法：
# vim /usr/local/nagios/etc/cgi.conf
use_authentication=1 #第78行，把1改为0
补充：
第二个错误，不建议关闭用户认证，可以在nagios.cfg中所有的用户选项后添加 auth_file文件中的用户名，多个用户名之间用逗号隔开。