需要的包有：
FCGI-0.74.tar.gz 462a77a0072480fea791a4d3095eb486 FCGI-ProcManager-0.24.tar.gz 0aa184b1e5339e0ad92f4c1439406304 nagios-3.3.1.tar.gz c935354ce0d78a63bfabc3055fa77ad5 nagios-plugins-1.4.15.tar.gz 56abd6ade8aa860b38c4ca4a6ac5ab0d nconf-1.3.0-0.tgz 643b512dfa26676f652d966af37f62bd ndoutils-1.4b9.tar.gz 659b759a5eb54b84eb44a29f26b603bc npc-2.0.4.tar.gz 7b30302c544f10ed73cff406fda14499前置条件：
64位 CentOS 5.6 中 Nginx + PHP + MySQL 的编译安装
64位 CentOS 5.6 中 rrdtool 的编译安装
64位 CentOS 5.6 中 Cacti 0.8.7 i 的编译安装
tar -zxvf nagios-3.3.1.tar.gz cd nagios ./configure --with-nagios-user=web --with-nagios-group=web --with-gd-lib=/usr/local/libgd/lib --with-gd-inc=/usr/local/libgd/include make all make install make install-init make install-config make install-commandmode cd .. ln -s /usr/local/lib/libiconv.so.2.5.0 /usr/lib64/libiconv.so.2 ln -s /usr/local/nagios/share /home/web/cacti/nagios ln -s /usr/local/nagios/sbin /usr/local/nagios/share/cgi-bin tar -zxvf nagios-plugins-1.4.15.tar.gz cd nagios-plugins-1.4.15 ./configure --with-nagios-user=web --with-nagios-group=web make make install cd ..
#########nagios安装完成...真的....但要小小的配置一下，才能在nginx里开起来#########为了运行nagios里的cgi部分，需要安装perl fcgi模块，并且让nginx支持cgi的调用 #参考URL： tar -zxvf FCGI-0.74.tar.gz cd FCGI-0.74 perl Makefile.PL make make install cd .. tar -zxvf FCGI-ProcManager-0.24.tar.gz cd FCGI-ProcManager-0.24 perl Makefile.PL make make install cd ..
#将以下内容保存为cgiwrap-fcgi.pl
#!/usr/bin/perl use FCGI; use Socket; use FCGI::ProcManager; sub shutdown { FCGI::CloseSocket($socket); exit; } sub restart { FCGI::CloseSocket($socket); &main; } use sigtrap 'handler', \&shutdown, 'normal-signals'; use sigtrap 'handler', \&restart, 'HUP'; require 'syscall.ph'; use POSIX qw(setsid); END() { } BEGIN() { } { no warnings; *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 { $proc_manager = FCGI::ProcManager->new( {n_processes => 5} ); $socket = FCGI::OpenSocket( "/tmp/cgiwrap-dispatch.sock", 10 ) ; #use UNIX sockets - user running this script must have w access to the 'nginx' folder!! $request = FCGI::Request( \*STDIN, \*STDOUT, \*STDERR, \%req_params, $socket, &FCGI::FAIL_ACCEPT_ON_INTR ); $proc_manager->pm_manage(); if ($request) { request_loop() } FCGI::CloseSocket($socket); } sub request_loop { while ( $request->Accept() >= 0 ) { $proc_manager->pm_pre_dispatch(); #processing any STDIN input from WebServer (for CGI-POST actions) $stdin_passthrough = ''; { no warnings; $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 ); pipe( PARENT_ERR, CHILD_ERR ); my $pid = open( CHILD_O, "-|" ); unless ( defined($pid) ) { print("Content-type: text/plain\r\n\r\n"); print "Error: CGI app returned no output - Executing $req_params{SCRIPT_FILENAME} failed !\n"; next; } $oldfh = select(PARENT_ERR); $| = 1; select(CHILD_O); $| = 1; select($oldfh); if ( $pid > 0 ) { close(CHILD_RD); close(CHILD_ERR); print PARENT_WR $stdin_passthrough; close(PARENT_WR); $rin = $rout = $ein = $eout = ''; vec( $rin, fileno(CHILD_O), 1 ) = 1; vec( $rin, fileno(PARENT_ERR), 1 ) = 1; $ein = $rin; $nfound = 0; while ( $nfound = select( $rout = $rin, undef, $ein = $eout, 10 ) ) { die "$!" unless $nfound != -1; $r1 = vec( $rout, fileno(PARENT_ERR), 1 ) == 1; $r2 = vec( $rout, fileno(CHILD_O), 1 ) == 1; $e1 = vec( $eout, fileno(PARENT_ERR), 1 ) == 1; $e2 = vec( $eout, fileno(CHILD_O), 1 ) == 1; if ($r1) { while ( $bytes = read( PARENT_ERR, $errbytes, 4096 ) ) { print STDERR $errbytes; } if ($!) { $err = $!; die $!; vec( $rin, fileno(PARENT_ERR), 1 ) = 0 unless ( $err == EINTR or $err == EAGAIN ); } } if ($r2) { while ( $bytes = read( CHILD_O, $s, 4096 ) ) { print $s; } if ( !defined($bytes) ) { $err = $!; die $!; vec( $rin, fileno(CHILD_O), 1 ) = 0 unless ( $err == EINTR or $err == EAGAIN ); } } last if ( $e1 || $e2 ); } close CHILD_RD; close PARENT_ERR; 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(PARENT_ERR); close(STDIN); close(STDERR); #fcntl(CHILD_RD, F_DUPFD, 0); syscall( &SYS_dup2, fileno(CHILD_RD), 0 ); syscall( &SYS_dup2, fileno(CHILD_ERR), 2 ); #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 exist or is not executable by this process.\n"; } } } #放到nginx那里去