海运的博客

Centos下Nginx添加perl(fastcgi)支持

发布时间:May 31, 2012 // 分类:Nginx // 8 Comments

安装perl-fcgi模块,有安装epel源可使用yum安装:

yum -y install perl-FCGI

编译安装:

wget http://search.cpan.org/CPAN/authors/id/F/FL/FLORA/FCGI-0.74.tar.gz
tar zxvf FCGI-0.74.tar.gz 
cd FCGI-0.74
perl Makefile.PL
make
make install

新建perl脚本用做fastcgi进程管理,保存为/usr/bin/perl-fastcgi.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 "fakeexit\nrc=".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
        $socket = FCGI::OpenSocket( "/tmp/perl-fastcgi.sock", 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/plain\r\n\r\n");
                        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/plain\r\n\r\n");
                print "Error: No such CGI app - $req_params{SCRIPT_FILENAME} may not ";
                print "exist or is not executable by this process.\n";
            }

        }
}

新建init脚本,用于管理perl-fastcgi,保存为/etc/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/perl-fastcgi.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

启动perl-fastcgi进程:

chmod +x /usr/bin/perl-fastcgi.pl 
chmod 755 /etc/init.d/perl-fastcgi
/etc/init.d/perl-fastcgi start
chkconfig perl-fastcgi on

Nginx配置:

server
    {
        listen       80;
        server_name www.haiyun.me;
        index index.pl index.html;
        root  /home/wwwroot/www.haiyun.me;

                location ~ .*\.(pl|cgi)?$
                {
                fastcgi_pass  unix:/tmp/perl-fastcgi.sock;
                fastcgi_index index.cgi;
                fastcgi_param   SCRIPT_FILENAME  $document_root$fastcgi_script_name;  
                include         fastcgi_params;  
                }
                access_log none;
}

新建index.pl脚本测试,加x执行权限。

#!/usr/bin/perl
print "Content-type: text/html\n\n";
print "<html><body>Hello, world.</body></html>";

访问https://www.haiyun.me,如果正常就会显示Hello,world.

用Cacti监控Nginx状态

发布时间:May 18, 2012 // 分类:Cacti // No Comments

此方案需先开启Nginx状态监控Cacti服务器安装数据获取脚本:

wget https://www.haiyun.me/download/cacti-nginx.tar.gz
tar zxvf cacti-nginx.tar.gz
cd cacti-nginx
cp get_nginx_clients_status.pl cactipath/scripts/
cp get_nginx_socket_status.pl cactipath/scripts/
chmod 0755 cactipath/scripts/get_nginx_socket_status.pl
chmod 0755 cactipath/scripts/get_nginx_clients_status.pl

测试数据获取:

perl get_nginx_clients_status.pl https://www.haiyun.me/nginx_status
nginx_active:2 nginx_reading:0 nginx_writing:1 nginx_waiting:1 

如出现no (LWP::UserAgent not found)需安装perl组件:

yum -y install perl-libwww-perl

Cacti管理界面导入xml模板,相关主机添加Nginx Clients Stat、Nginx Sockets Stat模板。
Nginx监控效果图如下:
cacti监控nginx状态.png

Nginx开启状态监控

发布时间:May 14, 2012 // 分类:Nginx // No Comments

Nginx开启监控需在编译时加入with-http_stub_status_module,查看当前Nginx编译参数:

/usr/local/nginx/sbin/nginx -V

1.以二级目录方式开启,编辑配置文件在server段添加:

location /status {
        stub_status on;
        access_log off;
        allow 192.168.1.16;
        deny all;
}

访问www.haiyun.me/status即可看到状态页面。
2.以二级域名方式开启:

server
{
       listen 80;
       server_name status.www.haiyun.me;

       location / {
       stub_status on;
       access_log off;
       allow 192.168.1.16;
       deny all;
       }
}

状态说明:
Active connections: 1 对后端发起的活动连接数
server accepts handled requests
909 909 7148
共处理909个连接,成功创建909次握手,总共处理7148个请求。
Reading: 0 Writing: 1 Waiting: 0
Reading:Nginx读取客户端的Header信息数。
Writing:Nginx返回客户端的Header信息数。
Waiting:开启keep-alive的情况下,等于active-(reading+writing),即Nginx已经处理完成,在等候下一次请求的连接。
在并发数较高,Waiting次数较多正常,如果reading+writing较多,代表并发访问量较大。

Nginx自定义404错误页面

发布时间:May 9, 2012 // 分类:Nginx // No Comments

编辑Nginx配置文件,在server段添加:

listen 80;
         root  /home/wwwroot/www.haiyun.me;
         error_page 404  /404.html;  

也可同时定义多个错误状态:

error_page 404 502 403  /404.html;  

还可以更改错误状态码:

error_page 404  =200 /404.html;  

如果错误页面是php程序:

error_page 404 = /404.php;  

404页面最好不要超过512字节,IE浏览器会转向其默认错误页面。

Nginx编译安装more_set_headers模块自定义head头信息

发布时间:May 9, 2012 // 分类:Nginx // No Comments

通过服务器的head头可以得到服务器的很多信息,这给服务器安全带来很大隐患,如:

curl -I https://www.haiyun.me
HTTP/1.1 301 Moved Permanently
Server: nginx/1.0.15
Date: Fri, 10 Feb 2012 10:43:42 GMT
Content-Type: text/html
Connection: keep-alive
X-Powered-By: PHP/5.2.17p1
location: forum.php

Nginx可以编译添加第三方模块more_set_headers来自定义或清除相关head信息。

cd /usr/local/src/
wget http://nginx.org/download/nginx-1.0.15.tar.gz
tar zxvf nginx-1.0.15.tar.gz
cd nginx-1.0.15
wget -O header.zip --no-check-certificate https://github.com/agentzh/headers-more-nginx-module/zipball/v0.17rc1
unzip header.zip 
./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-\
http_ssl_module --with-http_gzip_static_module --add-module=./agentzh-headers-more-nginx-module-3580526/
make && make install

应用示例,清除服务器及php信息,在配置文件http段添加以下:

more_clear_headers "X-Powered-By:";
more_clear_headers "Server:";

重新加载配置文件:

/etc/init.d/nginx reload

查看当前head头信息:

curl -I https://www.haiyun.me
HTTP/1.1 301 Moved Permanently
Date: Fri, 10 Feb 2012 10:58:38 GMT
Content-Type: text/html
Connection: keep-alive
location: forum.php

现在nginx及php信息都没了,当然也可自定义为其它信息。

分类
最新文章
最近回复
  • 1: 方法一ngtcp2要改下:./configure PKG_CONFIG_PATH=/usr/l...
  • 海运: 关闭服务器
  • 海风: override.battery.charge.low以及override.battery.r...
  • koldjf: 不能过滤
  • 杰迪武士: 此文甚好甚强巨,依照此文在树莓派2 + Rasbian上部署成功 感谢博主美文共赏
  • 海运: ups不知有没选项可设置此参数,不过你可以在另外一台电脑上安装nut客户端自动关机。
  • kgami: 想请教一下,设置了的电脑自动关机之后,几秒后UPS怎么也跟着关机了,导致另外一台电脑没关机就断...
  • 海运: 写的很详细了啊,/etc/nut/hosts.conf用以nut-cgi连接nut服务器参数,...
  • ryan: 请问下nginx配置好了,怎么和这个nut链接呢?最后可视化管理这块能给个详细一点的教程么?谢谢。
  • 1: /etc/config/fstab配置文件 https://openwrt.org/zh/do...