nagios編譯安裝(使用nginx做反向代理)

參考網址:
https://assets.nagios.com/downloads/nagioscore/docs/Installing_Nagios_Core_From_Source.pdf#_ga=1.215318228.21109006.1479963831

寫的有點亂- -，不過挺完整的(比網上其它零零碎碎的文章)，啓動腳本(複製別人的，不是自己寫的)也貼進來了，一步一步做下來是能安裝成功的

Package requirements:

    yum install wget gcc glibc gd gd-devel libgd-dev
    php環境

Download Nagios core and Nagios Plugins

wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-4.2.0.tar.gz
wget http://nagios-plugins.org/download/nagios-plugins-2.1.2.tar.gz

Adding the Nagios User and Group

    useradd nagios
    groupadd nagios
    usermod -a -G nagios nagios

Nagios Core Installation

    tar zxvf nagios-4.2.0.tar.gz 
    tar zxvf nagios-plugins-2.1.2.tar.gz 

    cd nagios-4.2.0
    ./configure --prefix=/usr/local/nagios --with-command-group=nagios

    make all
    make install 
    make install-init 
    make install-config 
    make install-commandmode 

    cp -R contrib/eventhandlers/ /usr/local/nagios/libexec/
    chown -R nagios:nagios /usr/local/nagios/libexec/eventhandlers
    /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

Nagios Plugin Installation

    cd /tmp/nagios-plugins-2.1.2
    ./configure --with-nagios-user=nagios --with-nagios-group=nagios 
    make 
    make install

# ================== 以上爲nagios的安裝 ======================== #

# 接下來配置nginx
# nagios需要處理php跟perl的請求，所以需要分別配置php跟perl處理請求的fastcgi

# 編譯安裝php5.5
# 1. 安裝epel源
rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
# 2. 依賴包
yum install libxml2-devel gd-devel libmcrypt-devel libcurl-devel openssl-devel
yum install php-gd  php-mbstring php-xml php-mcrypt

# 3. 編譯選項(不需要數據庫)
./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc  --with-iconv-dir=/usr/local --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-discard-path --enable-safe-mode --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --with-curlwrappers --enable-mbregex --enable-fastcgi --enable-fpm --enable-force-cgi-redirect --enable-mbstring --with-mcrypt --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets  --with-xmlrpc --enable-zip --enable-soap --without-pear --with-zlib --enable-pdo

make && make install
cp php.ini-production /usr/local/php/etc/php.ini
cp /usr/local/php/etc/php-fpm.conf.default /usr/local/php/etc/php-fpm.conf

# 下一個php-fpm的啓動腳本
vim /etc/init.d/php-fpm

#! /bin/sh

### BEGIN INIT INFO
# Provides:          php-fpm
# Required-Start:    $remote_fs $network
# Required-Stop:     $remote_fs $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts php-fpm
# Description:       starts the PHP FastCGI Process Manager daemon
### END INIT INFO

prefix=/usr/local/php
exec_prefix=${prefix}

php_fpm_BIN=${exec_prefix}/sbin/php-fpm
php_fpm_CONF=${prefix}/etc/php-fpm.conf
php_fpm_PID=${prefix}/var/run/php-fpm.pid


php_opts="--fpm-config $php_fpm_CONF --pid $php_fpm_PID"


wait_for_pid () {
    try=0

    while test $try -lt 35 ; do

        case "$1" in
            'created')
            if [ -f "$2" ] ; then
                try=''
                break
            fi
            ;;

            'removed')
            if [ ! -f "$2" ] ; then
                try=''
                break
            fi
            ;;
        esac

        echo -n .
        try=`expr $try + 1`
        sleep 1

    done

}

case "$1" in
    start)
        echo -n "Starting php-fpm "

        $php_fpm_BIN --daemonize $php_opts

        if [ "$?" != 0 ] ; then
            echo " failed"
            exit 1
        fi

        wait_for_pid created $php_fpm_PID

        if [ -n "$try" ] ; then
            echo " failed"
            exit 1
        else
            echo " done"
        fi
    ;;

    stop)
        echo -n "Gracefully shutting down php-fpm "

        if [ ! -r $php_fpm_PID ] ; then
            echo "warning, no pid file found - php-fpm is not running ?"
            exit 1
        fi

        kill -QUIT `cat $php_fpm_PID`

        wait_for_pid removed $php_fpm_PID

        if [ -n "$try" ] ; then
            echo " failed. Use force-quit"
            exit 1
        else
            echo " done"
        fi
    ;;

    status)
        if [ ! -r $php_fpm_PID ] ; then
            echo "php-fpm is stopped"
            exit 0
        fi

        PID=`cat $php_fpm_PID`
        if ps -p $PID | grep -q $PID; then
            echo "php-fpm (pid $PID) is running..."
        else
            echo "php-fpm dead but pid file exists"
        fi
    ;;

    force-quit)
        echo -n "Terminating php-fpm "

        if [ ! -r $php_fpm_PID ] ; then
            echo "warning, no pid file found - php-fpm is not running ?"
            exit 1
        fi

        kill -TERM `cat $php_fpm_PID`

        wait_for_pid removed $php_fpm_PID

        if [ -n "$try" ] ; then
            echo " failed"
            exit 1
        else
            echo " done"
        fi
    ;;

    restart)
        $0 stop
        $0 start
    ;;

    reload)

        echo -n "Reload service php-fpm "

        if [ ! -r $php_fpm_PID ] ; then
            echo "warning, no pid file found - php-fpm is not running ?"
            exit 1
        fi

        kill -USR2 `cat $php_fpm_PID`

        echo " done"
    ;;

    *)
        echo "Usage: $0 {start|stop|force-quit|restart|reload|status}"
        exit 1
    ;;

esac

# 2. 安裝perl依賴
yum install fcgi perl-FCGI perl-FCGI-ProcManager -y

# 生成nagios web界面的驗證信息
htpasswd -c /usr/local/nagios/etc/nagiospasswd nagios

# nginx的配置文件如下:
server
{
    listen       80;
    server_name  monitor.com;

    index index.html index.htm index.php;
    root  /usr/local/nagios/share;
    auth_basic "Nagios Access";
    auth_basic_user_file /usr/local/nagios/etc/nagiospasswd;

    location ~ .*\.(php|php5)?$ {   
      fastcgi_pass  127.0.0.1:9000;
      fastcgi_index index.php;
      include fastcgi.conf;
    }

    location ~ .*\.(cgi|pl)?$ {
        root   /usr/local/nagios/sbin;
        rewrite ^/nagios/cgi-bin/(.*)\.cgi /$1.cgi break;
        fastcgi_pass  127.0.0.1:8999;
        fastcgi_index index.cgi;
        include fastcgi.conf;

        auth_basic "Nagios Access";
        auth_basic_user_file /usr/local/nagios/etc/nagiospasswd;
    }

    location /nagios {
        alias /usr/local/nagios/share;
        auth_basic "Nagios Access";
        auth_basic_user_file /usr/local/nagios/etc/nagiospasswd;
    }

}

# 注意: 需要在 fastcgi.conf 中加入如下兩行
fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
fastcgi_param  REMOTE_USER        $remote_user;

# perl的cgi方式需要自己下載腳本, 如下:
vim /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 "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
        $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";
            }

        }
}

# 再寫一個啓動和停止perl cgi的腳本
vim /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/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

# 修改Nagios配置文件，給新增的用戶增加訪問權限
vim /usr/local/nagios/etc/cgi.cfg
# 以下幾項分別加入新增的用戶，多用戶逗號分隔
authorized_for_system_information=nagiosadmin,nagios
authorized_for_configuration_information=nagiosadmin,nagios
authorized_for_system_commands=nagiosadmin,nagios
authorized_for_all_services=nagiosadmin,nagios
authorized_for_all_hosts=nagiosadmin,nagios
authorized_for_all_service_commands=nagiosadmin,nagios
authorized_for_all_host_commands=nagiosadmin,nagios

# 分別啓動nagios php-fpm nginx perl-fastcgi
# 輸入 http://monitor.com(需自己在hosts裏面做解析) 即可訪問nagios了

nagios編譯安裝(使用nginx做反向代理)

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