一.安装nagios这里不做说明
1.nagios map显示出不来，要装GD 和GD-DEV* 然后再重新编译nagios，要么就一开始就装好。
二.nginx部分
1.安装
2.配置部分，nginx不能执行外部程序，所以我们要用fastcgi协议来调用外部程序。
Nginx并不提供支持对外部程序的直接调用或者解析（所以缺少像apache里的mod_php这样的模块），所有的外部程序（包括PHP）必须通过fastcgi接口来调用，在linux下接口是socket （文件socket或者Internet socket）。所以为了调用CGI程序，我们需要一个fastcgi的wrapper，这个wrapper绑定在某个固定socket上（比如端口或者文件socket），当nginx将CGI请求发送给这个socket的时候，wrapper接纳请求并fork一个新的线程，这个线程调用外部的程序或者解释器处理脚本并读取返回值，而wrapper再将返回的数据（网页或者图片等）通过fastcgi将数据通过那个固定的socket传递给nginx
目前有网上流行的两种fastcgi管理器，perl-cgi和spwan-cgi,用spwan-cgi启动php部分
例：spwan-cgi -a 127.0.0.1 -p 9000 -f /usr/local/php-cgi -C 20
这里我们也可以用-s 参数来启用sock通信，例：unix:/var/run/nginx.sock
命令用法可以用--help来查看，然后再nginx.conf写入
复制代码 代码如下:
location ~ .php$ {
root /usr/local/nagios/share/;
fastcgi_pass 127.0.0.1:9000;
# fastcgi_pass unix:/var/run/nagios.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /usr/local/nagios/share/$fastcgi_script_name;
include fastcgi_params;
}
把所有php结尾的访问交给php来处理。
下面是perl-cgi的内容，它也是根据fastcgi协议写的
复制代码 代码如下:
#!/usr/bin/perl
use FCGI;
#perl -MCPAN -e 'install FCGI'
use Socket;
#this keeps the program alive or something after exec'ing perl scripts
END() { } BEGIN() { }
*CORE::GLOBAL::exit = sub { die "fakeexitnrc=".shift()."n"; }; eval q{exit}; if ($@) { exit unless $@ =~ /^fakeexit/; } ;
&main;
sub main {
#$socket = FCGI::OpenSocket( ":3461", 10 ); #use IP sockets
$socket = FCGI::OpenSocket( "/var/run/nagios.sock", 10 ); #use UNIX sockets - user running this script must have w access to the 'nginx' folder!!
$request = FCGI::Request( *STDIN, *STDOUT, *STDERR, %ENV, $socket );
if ($request) {request_loop()};
FCGI::CloseSocket( $socket );
}
sub request_loop {
while( $request->Accept() >= 0 ) {
#processing any STDIN input from WebServer (for CGI-GET actions)
$env = $request->GetEnvironment();
$stdin_passthrough ='';
$req_len = 0 + $ENV{CONTENT_LENGTH};
if ($ENV{REQUEST_METHOD} eq 'GET'){
$stdin_passthrough .= $ENV{'QUERY_STRING'};
}
#running the cgi app
if ( (-x $ENV{SCRIPT_FILENAME}) && #can I execute this?
(-s $ENV{SCRIPT_FILENAME}) && #Is this file empty?
(-r $ENV{SCRIPT_FILENAME}) #can I read this file?
){
#http://perldoc.perl.org/perlipc.html#Safe-Pipe-Opens
open $cgi_app, '-|', $ENV{SCRIPT_FILENAME}, $stdin_passthrough or print("Content-type: text/plainrnrn"); print "Error: CGI app returned no output - Executing $ENV{SCRIPT_FILENAME} failed !n";
if ($cgi_app) {print <$cgi_app>; close $cgi_app;}
}
else {
print("Content-type: text/plainrnrn");
print "Error: No such CGI app - $req_len - $ENV{CONTENT_LENGTH} - $ENV{REQUEST_METHOD} - $ENV{SCRIPT_FILENAME} may not exist or is not executable by this process.n";
}
}
}
用一个脚本启动
复制代码 代码如下:
#!/bin/bash
## start_nginx_cgi.sh: start nginx cgi mode
## ljzhou, 2007.08.20
PERL="/usr/bin/perl"
NGINX_CGI_FILE="/usr/local/nagios/bin/perl-cgi.pl"
#bg_num=`jobs -l |grep "NGINX_CGI_FILE"`
#PID=`ps aux|grep "perl-cgi"|cut -c10-14|
xargs kill -9`
PID=`ps aux|grep 'perl-cgi'|cut -c10-14|
sed -n "1P"`
echo $PID
sockfiles="/var/run/nagios.sock"
kill -9 $PID
$PERL $NGINX_CGI_FILE &
sleep 3
`chown nobody.nobody $sockfiles`
然后再加如下配置到nginx
复制代码 代码如下:
location ~ .cgi$ {
rewrite ^/nagios/cgi-bin/(.*).cgi /$1.cgi
break;
fastcgi_pass unix:/var/run/nagios.sock;
fastcgi_index index.cgi;
fastcgi_param SCRIPT_FILENAME /usr/local/nagios/sbin$fastcgi_script_name;
fastcgi_param HTTP_ACCEPT_LANGUAGE en_US;
include fastcgi_params;
}
location ~ .pl$ {
fastcgi_pass unix:/var/run/nagios.sock;
fastcgi_index index.pl;
fastcgi_param SCRIPT_FILENAME /usr/local/nagios/sbin$fastcgi_script_name;
include fastcgi_params;
}
