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 打php-fpm补丁，编译时启用--enable-fastcgi --enable-fpm 参数，使用php-fpm管理php-cgi。php安装详细步骤参见 张宴文章：http://www.linuxidc.com/Linux/2009-08/21405p6.htm ● c-cgi 使用 Spawn-fcgi 管理 ，利用fcgiwrap驱动。fcgiwrap 介绍参见http://nginx.localdomain.pl/wiki/FcgiWrap
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 /$1.cgi break;
fastcgi_pass 127.0.0.1:10000;
fastcgi_index index.cgi;
fastcgi_param SCRIPT_FILENAME document_rootfastcgi_script_name;
include fastcgi_params;
}
location ~ \.php$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME document_rootfastcgi_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