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    ▪Nginx环境中安装Nagios监控服务的详细教程      安装环境：centos5.5 一、Nginx平台安装 1、下载相关软件 FCGI-0.67.tar.gz FCGI-ProcManager-0.18.tar.gz IO-All-0.39.tar.gz nagios-3.2.3.tar.gz nagios-plugins-1.4.15.tar.gz 2、建立相关用户   代码示例: useradd nagios gro.........

    ▪Nginx+mysql+php-fpm负载均衡配置实例      系统环境如下： 前端Nginx：192.168.93.137 后端web1：192.168.0.11 后端web2：192.168.0.12 1、前端nginx配置：   代码示例: http {       ……         client_max_body_size 300m;         client_body_buff.........

    ▪nginx 常用全局变量一览      Nginx全局变量。 $args 此变量与请求行中的参数相等 $content_length 等于请求行的“Content_Length”的值。 $content_type 等同与请求头部的”Content_Type”的值 $document_root 等同于当前请求的root指令指定的.........

代码示例:

useradd nagios
groupadd nagcmd
usermod -g nagcmd nagios
usermod -g nagcmd www

代码示例:

tar zxvf nagios-3.2.3.tar.gz
cd nagios-3.2.3
./configure --with-group=nagios --with-user=nagios --with-command-group=nagcmd --with-gd-lib=/usr/local/gd/lib --with-gd-inc=/usr/local/gd/include (0608更新)
make all
make install
make install-init
make install-config
make install-commandmode

代码示例:

tar zxvf nagios-plugins-1.4.15.tar.gz
cd nagios-plugins-1.4.15
./configure --with-nagios-user=nagios --with-nagios-group=nagios
make
make install

代码示例:

chkconfig --add nagios
chkconfig nagios on
service nagios start

代码示例:

tar -zxf FCGI-0.67.tar.gz
cd FCGI-0.67
perl Makefile.PL
make && make install

tar -zxf FCGI-ProcManager-0.18.tar.gz
cd FCGI-ProcManager-0.18
perl Makefile.PL
make && make install

tar zxf IO-All-0.39.tar.gz
cd IO-All-0.39
perl Makefile.PL
make && make install

代码示例:

  #!/usr/bin/perl 
    # 
    #   author      Daniel Dominik Rudnicki 
    #   thanks to:  Piotr Romanczuk 
    #   email       daniel@sardzent.org 
    #   version     0.4.3 
    #   webpage     http://www.nginx.eu/ 
    # 
    #   BASED @ http://wiki.codemongers.com/NginxSimpleCGI 
    # 
    # 
    # use strict; 
    use FCGI; 
    use Getopt::Long; 
    use IO::All; 
    use Socket; 
    
    sub init { 
        GetOptions( "h" => \$help, 
                "verbose!"=>\$verbose, 
                "pid=s" => \$filepid, 
                "l=s" => \$logfile, 
                "S:s"   => \$unixsocket, 
                "P:i"   => \$unixport) or usage(); 
            usage() if $help; 
    
        print " Starting Nginx-fcgi\n" if $verbose; 
        print " Running with $> UID" if $verbose; 
        print " Perl $]" if $verbose; 
    
    #   if ( $> == "0" ) { 
    #       print "\n\tERROR\tRunning as a root!\n"; 
    #       print "\tSuggested not to do so !!!\n\n"; 
    #       exit 1; 
    #   } 
    
            if ( ! $logfile ) { 
            print "\n\tERROR\t log file must declared\n"
                . "\tuse $0 with option -l filename\n\n"; 
            exit 1; 
        } 
        print " Using log file $logfile\n" if $verbose; 
        "\n\n" >> io($logfile); 
        addlog($logfile, "Starting Nginx-cfgi"); 
        addlog($logfile, "Running with $> UID"); 
        addlog($logfile, "Perl $]"); 
        addlog($logfile, "Testing socket options"); 
    
        if ( ($unixsocket && $unixport) || (!($unixsocket) && !($unixport)) ) { 
            print "\n\tERROR\tOnly one option can be used!\n"; 
            print "\tSuggested (beacuse of speed) is usage UNIX socket -S \n\n"; 
            exit 1; 
        } 
    
        if ($unixsocket) { 
            print " Daemon listening at UNIX socket $unixsocket\n" if $versbose; 
            addlog($logfile, "Deamon listening at UNIX socket $unixsocket"); 
        } else { 
            print " Daemon listening at TCP/IP socket *:$unixport\n" if $verbose; 
            # 
            addlog($logfile, "Daemon listening at TCP/IP socket *:$unixport"); 
        } 
    
        if ( -e $filepid ) { 
            print "\n\tERROR\t PID file $filepid already exists\n\n"; 
            addlog($logfile, "Can not use PID file $filepid, already exists."); 
            exit 1; 
        } 
    
        if ( $unixsocket ) { 
            print " Creating UNIX socket\n" if $verbose; 
            $socket = FCGI::OpenSocket( $unixsocket, 10 ); 
            if ( !$socket) { 
                print " Couldn't create socket\n"; 
                addlog($logfile, "Couldn't create socket"); 
                exit 1; 
            } 
            print " Using UNIX socket $unixsocket\n" if $verbose; 
        } else { 
            print " Creating TCP/IP socket\n" if $verbose; 
            $portnumber = ":".$unixport; 
            $socket = FCGI::OpenSocket( $unixport, 10 ); 
            if ( !$socket ) { 
                print " Couldn't create socket\n"; 
                addlog($logfile, "Couldn't create socket"); 
                exit 1; 
            } 
            print " Using port $unixport\n" if $verbose; 
        } 
        addlog($logfile, "Socket created"); 
    
        if ( ! $filepid ) { 
            print "\n\tERROR\t PID file must declared\n"
                . "\tuse $0 with option -pid filename\n\n"; 
            exit 1; 
        } 
        print " Using PID file $filepid\n" if $verbose; 
        addlog($logfile, "Using PID file $filepid"); 
    
        my $pidnumber = $$; 
        $pidnumber > io($filepid); 
        print " PID number $$\n" if $verbose; 
        addlog($logfile, "PID number $pidnumber"); 
         
    } 
    
    sub addzero { 
        my ($date) = shift; 
        if ($date < 10) { 
            return "0$date"; 
        } 
           return $date; 
    } 
    
    sub logformat { 
        my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$iddst) = localtime(time); 
        my $datestring; 
        $year += 1900; 
        $mon++; 
        $mon  = addzero($mon); 
        $mday = addzero($mday); 
        $min  = addzero($min); 
        $datestring = "$year-$mon-$mday $hour:$min"; 
        return($datestring); 
    } 
    
    sub addlog { 
        my ($log_file, $log_message) = @_; 
        my $curr_time = logformat(); 
        my $write_message = "[$curr_time]   $log_message"; 
        $write_message >> io($log_file); 
        "\n" >> io($log_file); 
    } 
    
    sub printerror { 
        my $message = @_; 
        print "\n   Nginx FastCGI\tERROR\n"
            . "\t $message\n\n"; 
        exit 1; 
    } 
    
    sub usage { 
        print "\n   Nginx FastCGI \n"
            . "\n\tusage: $0 [-h] -S string -P int\n"
            . "\n\t-h\t\t: this (help) message"
            . "\n\t-S path\t\t: path for UNIX socket"
            . "\n\t-P port\t\t: port number"
            . "\n\t-p file\t\t: path for pid file"
            . "\n\t-l file\t\t: path for logfile"
            . "\n\n\texample: $0 -S /var/run/nginx-perl_cgi.sock -l /var/log/nginx/nginx-cfgi.log -pid /var/run/nginx-fcgi.pid\n\n"; 
        exit 1; 
    } 
    
    
    init; 
    # 
    END() { } BEGIN() { } 
    *CORE::GLOBAL::exit = sub { die "fakeexit\nrc=".shift()."\n"; }; eval q{exit};  
    if ($@) {  
        exit unless $@ =~ /^fakeexit/;  
    } ; 
    
    # fork part 
    my $pid = fork(); 
    
    if( $pid == 0 ) { 
        &main; 
        exit 0; 
    } 
    
    print " Forking worker process with PID $pid\n" if $verbose; 
    addlog($logfile, "Forking worker process with PID $pid"); 
    print " Update PID file $filepid\n" if $verbose; 
    addlog($logfile, "Update PID file $filepid"); 
    $pid > io($filepid); 
    print " Worker process running.\n" if $verbose; 
    addlog ($logfile, "Parent process $$ is exiting"); 
    exit 0; 
    
    sub main { 
        $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') && ($req_len != 0) ){ 
                while ($req_len) { 
                    $stdin_passthrough .= getc(STDIN); 
                    $req_len--;  
                } 
            } 
    
            # running the cgi app 
            if ( (-x $req_params{SCRIPT_FILENAME}) &&  
                (-s $req_params{SCRIPT_FILENAME}) &&  
                (-r $req_params{SCRIPT_FILENAME}) 
            ){ 
                foreach $key ( keys %req_params){ 
                    $ENV{$key} = $req_params{$key}; 
                } 
                if ( $verbose ) { 
                    addlog($logfile, "running $req_params{SCRIPT_FILENAME}"); 
                } 
                # http://perldoc.perl.org/perlipc.html#Safe-Pipe-Opens 
                # 
                open $cgi_app, '-|', $req_params{SCRIPT_FILENAME}, $stdin_passthrough or print("Content-type: text/plain\r\n\r\n"); print "Error: CGI app returned no output - Executing $req_params{SCRIPT_FILENAME} failed !\n"; # addlog($logfile, "Error: CGI app returned no output - Executing $req_params{SCRIPT_FILENAME} failed !"); 
                 
                if ($cgi_app) {  
                    print <$cgi_app>;  
                    close $cgi_app;  
                } 
            } else { 
                print("Content-type: text/plain\r\n\r\n"); 
                print "Error: No such CGI app - $req_params{SCRIPT_FILENAME} may not exist or is not executable by this process.\n"; 
                addlog($logfile, "Error: No such CGI app - $req_params{SCRIPT_FILENAME} may not exist or is not executable by this process."); 
            } 
        } 
    }

chmod +x /usr/local/nginx/sbin/nginx-fcgi

代码示例:

http {
      ……
        client_max_body_size 300m;
        client_body_buffer_size 128k;
        proxy_connect_timeout 600;
        proxy_read_timeout 600;
        proxy_send_timeout 600;
        proxy_buffer_size 16k;
        proxy_buffers 4 32k;
        proxy_busy_buffers_size 64k;
        proxy_temp_file_write_size 64k;

       upstream  www.  {
               #server   192.168.93.137:80;
               server   192.168.0.11:80;
               server   192.168.0.12:80;
       }
       upstream  www.xxx007.com  {
               #server   192.168.93.137:80;
               server   192.168.0.11:80;
               server   192.168.0.12:80;
       }
      server
       {
               listen  80;
               server_name  www.;

               location / {
          proxy_pass        http://www.;
          proxy_set_header   Host             $host;
          proxy_set_header   X-Real-IP        $remote_addr;
          proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
               }

               log_format  xxx  '$remote_addr - $remote_user [$time_local] $request '
     '"$status" $body_bytes_sent "$http_referer" '
     '"$http_user_agent" "$http_x_forwarded_for"';
               access_log  /home/logs/www.xxx.log  xxx;
       }

      server
       {
               listen  80;
               server_name  www.xxx007.com;

               location / {
          proxy_pass        http://www.xxx007.com;
          proxy_set_header   Host             $host;
          proxy_set_header   X-Real-IP        $remote_addr;
          proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
               }

               log_format  xxx007  '$remote_addr - $remote_user [$time_local] $request '
     '"$status" $body_bytes_sent "$http_referer" '
     '"$http_user_agent" "$http_x_forwarded_for"';
               access_log  /home/logs/www.xxx.log  xxx007;
       }
}

代码示例:

server
{
  listen       80;
  server_name www.;
  index index.html index.php;
  root  /home/www/www.;
  access_log  /home/logs/access_www..log;

  if (-d $request_filename){
          rewrite ^/(.*)([^/])$ http://$host/$1$2/ permanent;
  }

  error_page   500 502 503 504 404 403 http://www.;

  location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ {
          expires 30d;
  }

  location ~ .*\.(js|css)?$ {
          expires 6h;
  }

  location ~ .*\.(log|txt)$
  {
          deny all;
  }

  location ~ .*\.(php)?$
  {
          fastcgi_pass  127.0.0.1:9000;
          fastcgi_index index.php;
          include fcgi.conf;
  }
        }
 

        server
        {
  listen       80;
  server_name www.xxx007.com;
  index index.html index.php;
  root  /home/www/www.xxx007.com;
  access_log  /home/logs/access_www.xxx007.com.log;

  if (-d $request_filename){
          rewrite ^/(.*)([^/])$ http://$host/$1$2/ permanent;
  }

  error_page   500 502 503 504 404 403 http://www.xxx007.com;

  location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ {
          expires 30d;
  }

  location ~ .*\.(js|css)?$ {
          expires 6h;
  }

  location ~ .*\.(log|txt)$
  {
          deny all;
  }

  location ~ .*\.(php)?$
  {
          fastcgi_pass  127.0.0.1:9000;
          fastcgi_index index.php;
          include fcgi.conf;
  }
}