nginx + fastcgi是php下最流行的一套环境了，那perl会不会也有fastcgi呢，当然有，今天来搭建下nginx下perl的fastcgi.性能方面也不亚于php，但是现在web程序php的流行程度perl无法比拟了，性能再好也枉然，但是部分小功能可以考虑使用perl的fastcgi来搞定.进入正题.
1. 准备软件环境：
nginx：http://www.nginx.org
perl：系统自带
fastcgi：http://www.cpan.org/modules/by-module/FCGI/
1.1 nginx安装
nginx安装过无数次,这边不在重复安装过程,如果你还没有安装nginx并且不知道怎么安装nginx，那么请先参考之前的文章《nginx安装配置》
1.2 perl安装
一般linux都有自带perl，可以不用安装，如果确实没有，请执行：
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# yum install perl
1.3 perl-fastcgi安装
# cd /usr/local/src
# wget http://www.cpan.org/modules/by-module/FCGI/FCGI-0.74.tar.gz
# tar -xzvf FCGI-0.74.tar.gz
# cd FCGI-0.74
# perl Makefile.PL
# make
# make install
2. nginx虚拟主机配置
server {
listen 80;
server_name test.ttlsa.com;
#access_log /data/logs/nginx/test.ttlsa.com.access.log main;
index index.html index.php index.html;
root /data/site/test.ttlsa.com;
location /
{
}
location ~ .pl$
{
include fastcgi_params;
fastcgi_pass 127.0.0.1:8999;
#fastcgi_pass unix:/var/run/ttlsa.com.perl.sock;
fastcgi_index index.pl;
}
}
如果想把tcp/ip方式改为socket方式，可以修改fastcgi-wrapper.pl.
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$socket = FCGI::OpenSocket( “127.0.0.1:8999”, 10 ); #use IP sockets
改为
$socket = FCGI::OpenSocket( “/var/run/ttlsa.com.perl.sock”, 10 ); #use IP sockets
3. 配置脚本
3.1 fastcgi监听脚本
文件路径：/usr/bin/fastcgi-wrapper.pl
#!/usr/bin/perl
use FCGI;
use Socket;
use POSIX qw(setsid);
require ‘syscall.ph’;
&daemonize;
#this keeps the program alive or something after exec’ing perl scripts
END() { } BEGIN() { }
*CORE::GLOBAL::exit = sub { die “fakeexitnrc=”.shift().“n”; };
eval q{exit};
if ($@) {
exit unless $@ =~ /^fakeexit/;
};
&main;
sub daemonize() {
chdir ‘/’ or die “Can’t chdir to /: $!”;
defined(my $pid = fork) or die “Can’t fork: $!”;
exit if $pid;
setsid or die “Can’t start a new session: $!”;
umask 0;
}
sub main {
$socket = FCGI::OpenSocket( “127.0.0.1:8999”, 10 ); #use IP sockets
$request = FCGI::Request( *STDIN, *STDOUT, *STDERR, %req_params, $socket );
if ($request) { request_loop()};
FCGI::CloseSocket( $socket );
}
sub request_loop {
while( $request->Accept() >= 0 ) {
#processing any STDIN input from WebServer (for CGI-POST actions)
$stdin_passthrough =”;
$req_len = 0 + $req_params{‘CONTENT_LENGTH’};
if (($req_params{‘REQUEST_METHOD’} eq ‘POST’) && ($req_len != 0) ){
my $bytes_read = 0;
while ($bytes_read < $req_len) {
my $data = ”;
my $bytes = read(STDIN, $data, ($req_len – $bytes_read));
last if ($bytes == 0 || !defined($bytes));
$stdin_passthrough .= $data;
$bytes_read += $bytes;
}
}
#running the cgi app
if ( (–x $req_params{SCRIPT_FILENAME}) && #can I execute this?
(–s $req_params{SCRIPT_FILENAME}) && #Is this file empty?
(–r $req_params{SCRIPT_FILENAME}) #can I read this file?
){
pipe(CHILD_RD, PARENT_WR);
my $pid = open(KID_TO_READ, “-|”);
unless(defined($pid)) {
print(“Content-type: text/plainrnrn”);
print “Error: CGI app returned no output – “;
print “Executing $req_params{SCRIPT_FILENAME} failed !n”;
next;
}
if ($pid > 0) {
close(CHILD_RD);
print PARENT_WR $stdin_passthrough;
close(PARENT_WR);
while(my $s = <KID_TO_READ>) { print $s; }
close KID_TO_READ;
waitpid($pid, 0);
} else {
foreach $key ( keys %req_params){
$ENV{$key} = $req_params{$key};
}
# cd to the script’s local directory
if ($req_params{SCRIPT_FILENAME} =~ /^(.*)/[^/]+$/) {
chdir $1;
}
close(PARENT_WR);
close(STDIN);
#fcntl(CHILD_RD, F_DUPFD, 0);
syscall(&SYS_dup2, fileno(CHILD_RD), 0);
#open(STDIN, “<&CHILD_RD”);
exec($req_params{SCRIPT_FILENAME});
die(“exec failed”);
}
}
else {
print(“Content-type: text/plainrnrn”);
print “Error: No such CGI app – $req_params{SCRIPT_FILENAME} may not “;
print “exist or is not executable by this process.n”;
}
}
}
3.2 fastcgi自启动服务脚本：
文件路径：/etc/rc.d/init.d/perl–fastcgi
#!/bin/sh
#
# nginx – this script starts and stops the nginx daemon
#
# chkconfig: – 85 15
# description: Nginx is an HTTP(S) server, HTTP(S) reverse
# proxy and IMAP/POP3 proxy server
# processname: nginx
# config: /opt/nginx/conf/nginx.conf
# pidfile: /opt/nginx/logs/nginx.pid
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ “$NETWORKING” = “no” ] && exit 0
perlfastcgi=“/usr/bin/fastcgi-wrapper.pl”
prog=$(basename perl)
lockfile=/var/lock/subsys/perl–fastcgi
start() {
[ –x $perlfastcgi ] || exit 5
echo –n $“Starting $prog: “
daemon $perlfastcgi
retval=$?
echo
[ $retval –eq 0 ] && touch $lockfile
return $retval
}
stop() {
echo –n $“Stopping $prog: “
killproc $prog –QUIT
retval=$?
echo
[ $retval –eq 0 ] && rm –f $lockfile
return $retval
}
restart() {
stop
start
}
reload() {
echo –n $”Reloading $prog: ”
killproc $nginx –HUP
RETVAL=$?
echo
}
force_reload() {
restart
}
rh_status() {
status $prog
}
rh_status_q() {
rh_status >/dev/null 2>&1
}
case “$1” in
start)
rh_status_q && exit 0
$1
;;
stop)
rh_status_q || exit 0
$1
;;
restart)
$1
;;
reload)
rh_status_q || exit 7
$1
;;
force–reload)
force_reload
;;
status)
rh_status
;;
condrestart|try–restart)
rh_status_q || exit 0
;;
*)
echo $“Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}”
exit 2
esac
3.3 设置脚本权限
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# chmod a+x /usr/bin/fastcgi-wrapper.pl
# chmod a+x /etc/rc.d/init.d/perl-fastcgi
4. FastCGI测试
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4.1 启动nginx与fastcgi
# /usr/local/nginx-1.4.2/sbin/nginx
# /etc/init.d/perl-fastcgi start
4.2 perl测试文件：
文件路径/data/site/test.ttlsa.com/test.pl
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#!/usr/bin/perl
print “Content-type:text/htmlnn”;
print <<EndOfHTML;
<html><head><title>Perl Environment Variables</title></head>
<body>
<h1>Perl Environment Variables</h1>
EndOfHTML
foreach $key (sort(keys %ENV)) {
print “$key = $ENV{$key}
n”;
n”;
}
print “”;
5. 访问测试
5.1 访问
http://http:test.ttlsa.com/test.pl,出现内容表示OK.
6. 简单压力测试：
6.1 使用tcp/ip方式
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ab –n 1000 –c 10 http://test.ttlsa.com/test.pl
他是在是太慢了，只好用10个并发，共计100个请求来测试.
perl + fastcgi + tcp-ip
6.2 使用socket方式：
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ab –n 100000 –c 500 http://test.ttlsa.com/test.pl
perl + fastcgi + socket
很奇怪，使用tcp/ip方式，每秒就140多个请求，而使用socket方式却有5800个请求/秒。差距不是一般的大。顺便测试了一下php的fastcgi，大概请求在3000（tcp/ip方式），4800（socket方式）。
7. 文件下载
perl脚本下载：perl-fastcgi,fastcgi-wrapper.pl,test.perl三个文件
转载请注明出处：
