Nagios平台从Apache迁移到Nginx

Nginx的性能远远优于Apache,但由于nagios的web界面中包含php和c-cgi程序,因此需要两套fcgi管理工具(并非必须)和两套解释器(必须)。php用php-cgi跑就可以,c-cgi我选用fcgiwrap。下面介绍安装/配置步骤。

php-fpm:是为PHP打的一个FastCGI管理补丁,可以平滑变更php.ini配置而无需重启php-cgi
Spawn-fcgi:是lighttpd的一个分支项目,是一个cgi进程的管理器

php-cgi 监听 127.0.0.1:9000
fcgiwrap 监听 127.0.0.1:10000

nagios 安装配置不是本文重点,略过。web 目录如下:
/usr/local/nagios/share

安装spawn-fcgi

wget http://download.lighttpd.net/spawn-fcgi/releases-1.6.x/spawn-fcgi-1.6.3.tar.gz

tar xf spawn-fcgi-1.6.3.tar.gz

cd  /usr/local/src/spawn-fcgi-1.6.3

./configure  --prefix=/usr/local/spawn-fcgi

make && make install


安装fcgi库

wget http://dl.Fedoraproject.org/pub/epel/6/x86_64/fcgi-2.4.0-10.el6.x86_64.rpm

wget http://dl.fedoraproject.org/pub/epel/6/x86_64/fcgi-devel-2.4.0-10.el6.x86_64.rpm

rpm -ivh fcgi-2.4.0-10.el6.x86_64.rpm

rpm -ivh fcgi-devel-2.4.0-10.el6.x86_64.rpm

【注:以上fcgi软件的rpm为RHEL6对应版本的,如果是5系列请安装RHEL5对应版本的fcgi库,RHEL5软件下载地址如下:

fcgi: http://flexbox.sourceforge.net/CentOS/5/x86_64/fcgi-2.4.0-10.el5.x86_64.rpm

fcgi-devel:http://flexbox.sourceforge.net/centos/5/x86_64/fcgi-devel-2.4.0-10.el5.x86_64.rpm

安装fcgiwrap

fcgiwrap wiki --> http://nginx.localdomain.pl/wiki/FcgiWrap

最新版本为gnosek-fcgiwrap-1.1.0-0-g333ff99.tar.gz

cd gnosek-fcgiwrap-333ff99/

autoreconf -i

./configure  --prefix=/usr/local/fcgiwrap

make && make install


创建一个shell脚本来用spawn-fcgi 启动fcgiwrap实例

vi /usr/local/bin/c-fcgi.sh

#!/bin/sh

/usr/local/spawn-fcgi/bin/spawn-fcgi -f /usr/local/fcgiwrap/bin/fcgiwrap -a 127.0.0.1 -p 10000-F 3 -P /var/run/fastcgi-c.pid -u daemon -g daemon

 

chmod +x /usr/local/bin/c-fcgi.sh

参数含义如下:

-f <fcgiapp> 指定调用FastCGI的进程的执行程序位置

-a <addr> 绑定到地址addr

-p <port> 绑定到端口port

-s <path> 绑定到unixsocket的路径path

-C < children> 指定产生的FastCGI的进程数(仅用于PHP)

-F <children> 指定产生的FastCGI的进程数

-P <path> 指定产生的进程的PID文件路径

-u和-g FastCGI使用什么身份(-u用户-g用户组)运行,这里使用nginx的用户和组daemon运行

创建一个系统启动进程,方便使用service 和chkconfig 命令管

vi /etc/init.d/c-fcgi

 

#!/bin/bash

# c-fcgi - this script starts and stops the fcgiwrap instance

#

# chkconfig:  - 96 28

# description:  c-fcgi

# processname: c-fcgi

 

C_SCRIPT=/usr/local/bin/c-fcgi.sh

 

RETVAL=0

 

case "$1" in

start)

echo "Starting fastcgi"

$C_SCRIPT

RETVAL=$?

;;

stop)

echo "Stopping fastcgi"

killall -9 fcgiwrap

RETVAL=$?

;;

restart)

echo "Restarting fastcgi"

killall -9 fcgiwrap

$C_SCRIPT

RETVAL=$?

;;

*)

echo "Usage: c-fastcgi {start|stop|restart}"

exit 1

;;

esac

exit $RETVAL

# <span style="color: #0000ff;">chkconfig --add c-fcgi</span>

# <span style="color: #0000ff;">chkconfig c-fcgi on</span>

# <span style="color: #0000ff;">service c-fcgi start</span>


验证启动,是否提供了相应的端口

#netstat -tulnp

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address              Foreign Address            State      PID/Program name

tcp        0      0 127.0.0.1:9000              0.0.0.0:*                  LISTEN      32629/php-cgi

tcp        0      0 127.0.0.1:10000            0.0.0.0:*                  LISTEN      20039/fcgiwrap

 

 

#ps -ef | grep fcgiwrap | grep -v grep

 

daemon      20039    1  0 15:20 ?        00:00:00 /usr/local/bin/fcgiwrap

daemon      20040    1  0 15:20 ?        00:00:00 /usr/local/bin/fcgiwrap

daemon      20041    1  0 15:20 ?        00:00:00 /usr/local/bin/fcgiwr

 

#ps -ef | grep php-cgi | grep -v grep

 

nginx    22046    1  0 Jul10 ?        00:00:00 /usr/bin/php-cgi

nginx    22047 22046  0 Jul10 ?        00:00:00 /usr/bin/php-cgi

nginx    22048 22046  0 Jul10 ?        00:00:00 /usr/bin/php-cgi

nginx    22049 22046  0 Jul10 ?        00:00:00 /usr/bin/php-cgi

nginx    22050 22046  0 Jul10 ?        00:00:00 /usr/bin/php-cgi

nginx    22051 22046  0 Jul10 ?        00:00:00 /usr/bin/php-cgi


配置nginx相关nagios设置

server {

        listen 80;

        server_name nagios.icoffer.cn;

        root /usr/local/nagios/share;

        index index.php;

        auth_basic      "Welcome to Jobkoo Nagios Monitor System!";

        auth_basic_user_file    ./htpasswd;

       

        location /nagios{

        alias /usr/local/nagios/share/;

        }

 

        location ~ .*\.cgi?$ {

        root /usr/local/nagios/sbin;

        rewrite ^/nagios/cgi-bin/(.*)\.cgi /$1.cgi break;

        fastcgi_pass  127.0.0.1:10000;

        fastcgi_index index.cgi;

        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;

        include        fastcgi_params;

        }

 

        location ~ \.php$ {

        fastcgi_pass  127.0.0.1:9000;

        fastcgi_index  index.php;

        fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;

        fastcgi_read_timeout 500;

        include        fastcgi_params;

        fastcgi_buffers 8 128k;

        }

}


配置Nagios Nginxweb认证

htpasswd -c /etc/nginx/conf.d/htpasswd admin

cat /etc/nginx/conf.d/htpasswd

admin:QqbxsY3jdkOpQ


若没有htpasswd命令,请安装httpd-tools包

Nginx 的详细介绍:请点这里
Nginx 的下载地址:请点这里

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