2012년 10월 11일 목요일

L2 스위치 포트별 아이피 찾기 프로그램 (포트매핑)

L2 스위치에선 포트별 아이피를 찾을 수 없는 데, 이걸 L3장비와 연계하여 찾는 프로그램(포트매핑)을 만들어 봤다.

포항공과대학의 김은희님이 쓰신 논문이 유용한 자료가 되었다.

해당 논문에서 처럼 제대로 된 프로그램으로 만들고 싶지만, 이미 상용프로그램이 많은 상황에서 그정도의 퀄리티를 뛰어넘을 자신도 없고, 그냥 구현 해 본데에 의의를 둔다.

이미 상용으로 솔라윈즈나 OpUtils 등에 해당 기능이 포함되어 있다.

솔라윈즈의 switch port mapper 프로그램과 비교하여 보니, 정확히 비슷하진 않지만, 얼추 맞는 것으로 보인다.

문제 있을 수 있는점.
1. vlan 별로 별도 지정이 안되있어서, vlan을 추가한 L2장비에서는 어떻게 될 지 모르겠다.
2. 구글 검색하다가 보게 된건데, 시스코외의 장비에서는 조금 다른 MIB 를 사용하고 있는 것 같다.(표준MIB라고 해서 사용하기 했는 데, 잘 모르겠다.)

ps.
php 를 통해 구현했는데,  보통 호스팅으로 사용하는 서버에는 snmp 내장함수가 설치되어 있지 않다.

 

DEMO

 다운로드
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2012년 10월 2일 화요일

MRTG cpu,mem,hdd,load average,active user, process,traffic 템플릿

아래의 출처에서 다운받은 템플릿.

해당 템플릿을 다운 받고 cfgmaker 에서 옵션을 --host-template=host-generic.htp 추가하여 사용하면된다.

다만 해당사이트에서 다운받은 템플릿으로 생성한 cfg 파일을 indexmaker로 만들때 아래와 같은 에러메시지가 뜬다.

ERROR: no H1 line pagetop property in 아이피-memory section

indexmaker에서 pagetop 옵션에는 H1 태그로 찾는 게 기본값인데, 해당 템플릿에서는 H1 지정이 안되어 있다.

해당 문제는 -section 옵션으로 해결할 수 있다.

아래의 옵션중에 h1 외의 옵션으로 설정하여 실행하면 된다.


 - section = h1 섹션의 헤딩으로 PageTop에 h1 태그를 사용 (기본값)
 - section = title 그래프 섹션 헤딩으로 Title을 사용
 - section = name 섹션 헤딩으로 그래프 이름을 사용
 - section = descr 섹션 헤딩으로 그래프 description을 사용
 - section = portname 섹션 헤딩으로 PageTop에 port 이름 항목을 사용


아래는 H1 태그 추가한 버젼.



# Generic host template for all systems support MIB-II host resources
# MIB.  Will take care of storage devices as well, but watch out for
# changes in enumeration caused by inserting USB devices!

# Watch out for lines being wrapped by broken editing software

$head_lines .= "#---------------------------------------------------------------------\n";

if( $sysdescr =~ /linux/i ) {
  $target_lines .= "routers.cgi*Icon: linux-sm.gif\n";
} elsif( $sysdescr =~ /(windows|microsoft)/i ) {
  $target_lines .= "routers.cgi*Icon: windows-sm.gif\n";
} elsif( $sysdescr =~ /IBM/i ) {
  $target_lines .= "routers.cgi*Icon: aix-sm.gif\n";
} elsif( $sysdescr =~ /(sun|solaris)/i ) {
  $target_lines .= "routers.cgi*Icon: sun-sm.gif\n";
} elsif( $sysdescr =~ /cisco/i ) {
  $target_lines .= "routers.cgi*Icon: cisco-sm.gif\n";
}
$target_lines .= <<ECHO;
routers.cgi*Description: $router_name ($sysname)
routers.cgi*ShortDesc: $sysname
#-------------------------------------------------
ECHO

my($cpuoid) = oid_pick($router_connect,$v3opt,"1.3.6.1.4.1.2021.11.11.0",
  "1.3.6.1.4.1.9.2.1.58.0");
if($cpuoid) { # this uses the UCD MIB or Cisco MIB
$target_lines .= <<ECHO;
#######################################
# CPU load
Target[$router_name-cpu]: 100 - $cpuoid&$cpuoid:$router_connect
PageTop[$router_name-cpu]: <H1>$router_name CPU usage</H1>
Title[$router_name-cpu]: CPU on $router_name
Maxbytes[$router_name-cpu]: 100
Options[$router_name-cpu]: gauge
YLegend[$router_name-cpu]: percent
ShortLegend[$router_name-cpu]: %
LegendI[$router_name-cpu]: cpu:
Legend1[$router_name-cpu]: CPU usage
Legend3[$router_name-cpu]: Peak CPU usage
routers.cgi*Options[$router_name-cpu]: noo, nopercent, nototal, fixunit
routers.cgi*InOut[$router_name-cpu]: no
routers.cgi*ShortDesc[$router_name-cpu]:CPU
routers.cgi*Icon[$router_name-cpu]: chip-sm.gif
routers.cgi*InSummary[$router_name-cpu]: yes
routers.cgi*InCompact[$router_name-cpu]: yes
routers.cgi*Mode[$router_name-cpu]: cpu
routers.cgi*MBLegend[$router_name-cpu]: 100% usage
ECHO
} else { # lets try hrMIB
  my (@cpus) = snmpwalk($router_connect,'1.3.6.1.2.1.25.3.3.1.2');
  foreach my $tmpcpu (@cpus) {
    $tmpcpu =~ /(\d+):\d/;
    my( $instance )=$1;
    my( $target_name )=$router_name.".cpu".$instance;
    $target_lines .= <<ECHO;
Target[$target_name]: 1.3.6.1.2.1.25.3.3.1.2.$instance&1.3.6.1.2.1.25.3.3.1.2.$instance:$router_connect
Title[$target_name]: $sysname processor $instance
MaxBytes[$target_name]: 100
Options[$target_name]:  gauge, unknaszero, noo
Directory[$target_name]: $directory_name
WithPeak[$target_name]: wmy
YLegend[$target_name]: % Utilisation
ShortLegend[$target_name]: %
Legend1[$target_name]: 1min CPU load on proc$instance
Legend3[$target_name]: Max 5min CPU load on proc$instance
LegendI[$target_name]: cpu$instance:
PageTop[$target_name]: <H1>$sysname Processor Load</H1>
routers.cgi*ShortDesc[$target_name]:  CPU #$instance
routers.cgi*Options[$target_name]: nopercent, nototal, fixunit
routers.cgi*InOut[$target_name]: no
routers.cgi*Icon[$target_name]: chip-sm.gif
routers.cgi*InSummary[$target_name]: yes
routers.cgi*InCompact[$target_name]: yes
routers.cgi*Mode[$target_name]: cpu
routers.cgi*MBLegend[$target_name]: 100% usage
ECHO
    if($#cpus > 0) {
                $target_lines .= "routers.cgi*Graph[$target_name]: $router_name-allcpu average\n";
                $target_lines .= "routers.cgi*InMenu[$target_name]: no\n";
        }
  }
  if($#cpus > 0) {
        $target_lines .= <<ECHO;
routers.cgi*Title[$router_name-allcpu]: All CPUs on $router_name
routers.cgi*Icon[$router_name-allcpu]: chip-sm.gif
routers.cgi*ShortDesc[$router_name-allcpu]: CPU
routers.cgi*LegendAI[$router_name-allcpu]: cpu :
ECHO
  }
}

my($rmemoid) = oid_pick($router_connect,$v3opt,"1.3.6.1.4.1.2021.4.6.0");
my($smemoid) = oid_pick($router_connect,$v3opt,"1.3.6.1.4.1.2021.4.4.0");
if($rmemoid and $smemoid) { # this uses the UCD MIB
my($maxreal, $maxswap) = snmpget($router_connect,
        "1.3.6.1.4.1.2021.4.5.0","1.3.6.1.4.1.2021.4.3.0");
$target_lines .= <<ECHO;
#######################################
# Memory used
Target[$router_name-memory]: $rmemoid&$smemoid:$router_connect * 1024
PageTop[$router_name-memory]: <H1>$router_name Memory Available </H1>
Title[$router_name-memory]: Available Memory on $router_name
SetEnv[$router_name-memory]: MRTG_INT_DESCR="Memory"
MaxBytes1[$router_name-memory]: $maxreal
MaxBytes2[$router_name-memory]: $maxswap
Options[$router_name-memory]: gauge
YLegend[$router_name-memory]: Bytes
ShortLegend[$router_name-memory]: b
LegendI[$router_name-memory]: real:
LegendO[$router_name-memory]: swap:
Legend1[$router_name-memory]: Available real memory
Legend2[$router_name-memory]: Available swap space
Legend3[$router_name-memory]: Peak available real
Legend4[$router_name-memory]: Peak available swap
routers.cgi*Options[$router_name-memory]: nototal
routers.cgi*Mode[$router_name-memory]: memory
routers.cgi*ShortDesc[$router_name-memory]: Memory
routers.cgi*Description[$router_name-memory]: Memory available: $router_name
routers.cgi*InOut[$router_name-memory]: no
routers.cgi*InSummary[$router_name-memory]: yes
routers.cgi*InCompact[$router_name-memory]: yes
routers.cgi*Icon[$router_name-memory]: chip-sm.gif
routers.cgi*MBLegend[$router_name-memory]: 100% usage
ECHO
}

my (@storage) = snmpwalk($router_connect,'1.3.6.1.2.1.25.2.3.1.4');
my( $fscnt ) = 0;
foreach my $tmps (@storage) {
  $tmps =~ /(\d+):(\d+)/;
  next if(!$2);
  my($instance,$blocksize)=($1,$2);
  my($diskname,$disksize,$disktype) =
  snmpget($router_connect,'1.3.6.1.2.1.25.2.3.1.3.'.$instance,
   '1.3.6.1.2.1.25.2.3.1.5.'.$instance, '1.3.6.1.2.1.25.2.3.1.2.'.$instance);
  $disktype = $1 if($disktype =~ /\.(\d+)$/);
  next if(!$diskname or !$disksize
    or ($disktype!=2 and $disktype!=3 and $disktype!=4));
  my($shortdisk) = $instance;
  $shortdisk = $1 if($diskname =~ /^(\w):/);
  my($target_name)=$router_name.".disk.".$shortdisk;
  my($maxsize)= $disksize * $blocksize;

  if($disktype == 2 ) {      # memory use
        next if($rmemoid); # we already have it
    $target_lines .= <<ECHO;
#######################################
# Memory used
Target[$router_name-memory]: 1.3.6.1.2.1.25.2.3.1.6.$instance&1.3.6.1.2.1.25.2.3.1.5.$instance:$router_connect * $blocksize
PageTop[$router_name-memory]: <H1>$router_name Memory Used</H1>
Title[$router_name-memory]: Memory used on $router_name
SetEnv[$router_name-memory]: MRTG_INT_DESCR="Memory"
MaxBytes[$router_name-memory]: $maxsize
Options[$router_name-memory]: gauge
YLegend[$router_name-memory]: Bytes
ShortLegend[$router_name-memory]: b
LegendI[$router_name-memory]: used:
LegendO[$router_name-memory]: size:
Legend1[$router_name-memory]: Memory used
Legend2[$router_name-memory]: Memory total
Legend3[$router_name-memory]: Peak memory used
Legend4[$router_name-memory]: Peak memory total
routers.cgi*Options[$router_name-memory]: nototal  noo
routers.cgi*Mode[$router_name-memory]: memory
routers.cgi*ShortDesc[$router_name-memory]: Memory
routers.cgi*Description[$router_name-memory]: Memory used: $router_name
routers.cgi*InOut[$router_name-memory]: no
routers.cgi*InSummary[$router_name-memory]: yes
routers.cgi*InCompact[$router_name-memory]: yes
routers.cgi*Icon[$router_name-memory]: chip-sm.gif
routers.cgi*MBLegend[$router_name-memory]: 100% usage
ECHO
  } elsif($disktype == 3 ) { # swap use
        next if($smemoid);
    $target_lines .= <<ECHO;
#######################################
# Swap used
Target[$router_name-swap]: 1.3.6.1.2.1.25.2.3.1.6.$instance&1.3.6.1.2.1.25.2.3.1.5.$instance:$router_connect * $blocksize
PageTop[$router_name-swap]: <H1>$router_name Swap space used</H1>
Title[$router_name-swap]: Swap space used on $router_name
SetEnv[$router_name-swap]: MRTG_INT_DESCR="Swap"
MaxBytes[$router_name-swap]: $maxsize
Options[$router_name-swap]: gauge
YLegend[$router_name-swap]: Bytes
ShortLegend[$router_name-swap]: b
LegendI[$router_name-swap]: used:
LegendO[$router_name-swap]: size:
Legend1[$router_name-swap]: Swap space used
Legend2[$router_name-swap]: Swap space total
Legend3[$router_name-swap]: Peak swap used
Legend4[$router_name-swap]: Peak swap total
routers.cgi*Options[$router_name-swap]: nototal noo
routers.cgi*Mode[$router_name-swap]: memory
routers.cgi*ShortDesc[$router_name-swap]: Swap
routers.cgi*Description[$router_name-swap]: Swap space used: $router_name
routers.cgi*InOut[$router_name-swap]: no
routers.cgi*InSummary[$router_name-swap]: yes
routers.cgi*InCompact[$router_name-swap]: yes
routers.cgi*Icon[$router_name-swap]: chip-sm.gif
routers.cgi*MBLegend[$router_name-swap]: 100% usage
ECHO
  } elsif($disktype == 4 ) { # filesystems
    $fscnt += 1;
$target_lines .= <<ECHO;
#######################################
# Filesystem $diskname
Target[$target_name]: 1.3.6.1.2.1.25.2.3.1.6.$instance&1.3.6.1.2.1.25.2.3.1.6.$instance:$router_connect * $blocksize
PageTop[$target_name]: <H1>$router_name Disk space used ($diskname)</H1>
Title[$target_name]: Disk space used on $router_name ($diskname)
SetEnv[$target_name]: MRTG_INT_DESCR="$diskname"
MaxBytes[$target_name]: $maxsize
Options[$target_name]: gauge
YLegend[$target_name]: Bytes
ShortLegend[$target_name]: b
LegendI[$target_name]: used:
Legend1[$target_name]: Space used
Legend3[$target_name]: Peak used
routers.cgi*Options[$target_name]: nototal, noo
routers.cgi*Mode[$target_name]: general
routers.cgi*ShortDesc[$target_name]: Disk: $diskname
routers.cgi*Description[$target_name]: $router_name space used on $diskname
routers.cgi*InOut[$target_name]: no
routers.cgi*InMenu[$target_name]: yes
routers.cgi*InSummary[$target_name]: yes
routers.cgi*InCompact[$target_name]: yes
routers.cgi*Icon[$target_name]: dir-sm.gif
routers.cgi*Graph[$target_name]: $router_name-filesystems "Disk space" withtotal noo
ECHO
  }
}
if($fscnt) {
$target_lines .= <<ECHO;
routers.cgi*Options[$router_name-filesystems]: available
routers.cgi*Icon[$router_name-filesystems]: dir-sm.gif
routers.cgi*ShortDesc[$router_name-filesystems]: Filesystems
routers.cgi*Title[$router_name-filesystems]: Filesystems on $router_name
ECHO
}

my($laoid) = oid_pick($router_connect,$v3opt,"1.3.6.1.4.1.2021.10.1.5.2");
my($laoid2) = oid_pick($router_connect,$v3opt,"1.3.6.1.4.1.2021.10.1.5.3");
if($laoid and $laoid2) { # this uses the UCD MIB
$target_lines .= <<ECHO;
#######################################
# Load average
Target[$router_name-lavg]: $laoid&$laoid2:$router_connect / 100
PageTop[$router_name-lavg]: <H1>$router_name Load Average</H1>
Title[$router_name-lavg]: Load Average on $router_name
SetEnv[$router_name-lavg]: MRTG_INT_DESCR="Load Average"
MaxBytes[$router_name-lavg]: 1000
Options[$router_name-lavg]: nopercent, gauge
YLegend[$router_name-lavg]: Processes
ShortLegend[$router_name-lavg]:  
LegendI[$router_name-lavg]: 5min avg:
LegendO[$router_name-lavg]: 15min avg:
Legend1[$router_name-lavg]: 5-min load average
Legend2[$router_name-lavg]: 15-min load average
Legend3[$router_name-lavg]: Peak 5-min load average
Legend4[$router_name-lavg]: Peak 15-min load average
routers.cgi*Options[$router_name-lavg]: nomax, nototal, fixunit, noo
routers.cgi*Mode[$router_name-lavg]: general
routers.cgi*ShortDesc[$router_name-lavg]: Load Avg
routers.cgi*Description[$router_name-lavg]: Load average: $router_name
routers.cgi*UnScaled[$router_name-lavg]: none
routers.cgi*WithPeak[$router_name-lavg]: none
routers.cgi*InOut[$router_name-lavg]: no
routers.cgi*InSummary[$router_name-lavg]: yes
routers.cgi*InCompact[$router_name-lavg]: no
routers.cgi*Icon[$router_name-lavg]: load-sm.gif
ECHO
}

my($ucoid) = oid_pick($router_connect,$v3opt,"1.3.6.1.2.1.25.1.5.0");
if($ucoid) {
$target_lines .= <<ECHO;
#######################################
# User count
Target[$router_name-users]: $ucoid&$ucoid:$router_connect
PageTop[$router_name-users]: <H1>$router_name Active users</H1>
Title[$router_name-users]: Active Users on $router_name
MaxBytes[$router_name-users]: 1000
SetEnv[$router_name-users]: MRTG_INT_DESCR="Users"
Options[$router_name-users]: nopercent, gauge
YLegend[$router_name-users]: Users
ShortLegend[$router_name-users]:  
LegendI[$router_name-users]: Users
Legend1[$router_name-users]: Active Users
Legend3[$router_name-users]: Peak Active Users
routers.cgi*Options[$router_name-users]: nomax, nototal, fixunit, noo
routers.cgi*Mode[$router_name-users]: general
routers.cgi*ShortDesc[$router_name-users]: Users
routers.cgi*Description[$router_name-users]: Users on $router_name
routers.cgi*UnScaled[$router_name-users]: none
routers.cgi*InOut[$router_name-users]: no
routers.cgi*InSummary[$router_name-users]: yes
routers.cgi*InCompact[$router_name-users]: no
routers.cgi*Icon[$router_name-users]: user-sm.gif
ECHO
}

my($proid) = oid_pick($router_connect,$v3opt,"1.3.6.1.2.1.25.1.6.0");
if($proid) {
my($maxpr) = snmpget($router_connect, "1.3.6.1.2.1.25.1.7.0");
$target_lines .= <<ECHO;
#######################################
# Process count
Target[$router_name-procs]: $proid&$proid:$router_connect
PageTop[$router_name-procs]: <H1>$router_name Processes</H1>
Title[$router_name-procs]: Processes on $router_name
ECHO
if($maxpr) {
        $target_lines .= "MaxBytes[$router_name-procs]: $maxpr\n";
} else {
        $target_lines .= "MaxBytes[$router_name-procs]: 10000\n";
}
$target_lines .=
  "routers.cgi*Options[$router_name-procs]: nototal, fixunit, noo"
  .($maxpr?"":", nomax")."\n";
$target_lines .= <<ECHO;
SetEnv[$router_name-procs]: MRTG_INT_DESCR="Procs"
Options[$router_name-procs]: nopercent, gauge
YLegend[$router_name-procs]: Processes
ShortLegend[$router_name-procs]:  
LegendI[$router_name-procs]: Procs
Legend1[$router_name-procs]: Processes
Legend3[$router_name-procs]: Peak Processes
routers.cgi*Mode[$router_name-procs]: general
routers.cgi*ShortDesc[$router_name-procs]: Processes
routers.cgi*Description[$router_name-procs]: Processes on $router_name
routers.cgi*UnScaled[$router_name-procs]: none
routers.cgi*InOut[$router_name-procs]: no
routers.cgi*InSummary[$router_name-procs]: yes
routers.cgi*InCompact[$router_name-procs]: no
routers.cgi*Icon[$router_name-procs]: list-sm.gif
routers.cgi*MBLegend[$router_name-procs]: Max capacity
ECHO
}



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mrtg cfgmaker 팁

시스코 스위치 vlan 값 주석 처리.

cfgmaker 옵션에 '-if-filter=(!$if_is_ciscovlan)' 를 준다.

예제)

[sourcecode]
cfgmaker --global 'WorkDir:/home/mrtg/test/138' --global 'Language:korean' --global 'Options[_]: bits,growright' --output '/home/mrtg/test/cfgmaker/cfg_test4.cfg'  '-if-filter=(!$if_is_ciscovlan)'  커뮤니티@아이피
[/sourcecode]
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2012년 9월 21일 금요일

qmHandler 작동 문제

qmHandler 실행시 Calling system script to terminate qmail... 부분에서 더이상 진행이 안되는 현상이 있다.

확인 결과 qmail-remote 가 qmail stop 명령어로는 정지 되지 않는다.

killall qmail-remote 후 실행하자.
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2012년 9월 20일 목요일

전화번호 마스크용 스크립트

1. 전화번호 마스크용 스크립트

function MaskPhon( obj ) {

obj.value =  PhonNumStr( obj.value );

}

 

function PhonNumStr( str ){

var RegNotNum  = /[^0-9]/g;

var RegPhonNum = "";

var DataForm   = "";

 

// return blank

if( str == "" || str == null ) return "";

 

// delete not number

str = str.replace(RegNotNum,'');

if( str.length < 4 ) return str;

 

if( str.length > 3 && str.length < 7 ) {

DataForm = "$1-$2";

RegPhonNum = /([0-9]{3})([0-9]+)/;

} else if(str.length == 7 ) {

DataForm = "$1-$2";

RegPhonNum = /([0-9]{3})([0-9]{4})/;

} else if(str.length == 9 ) {

DataForm = "$1-$2-$3";

RegPhonNum = /([0-9]{2})([0-9]{3})([0-9]+)/;

} else if(str.length == 10){

if(str.substring(0,2)=="02"){

DataForm = "$1-$2-$3";

RegPhonNum = /([0-9]{2})([0-9]{4})([0-9]+)/;

}else{

DataForm = "$1-$2-$3";

RegPhonNum = /([0-9]{3})([0-9]{3})([0-9]+)/;

}

} else if(str.length > 10){

DataForm = "$1-$2-$3";

RegPhonNum = /([0-9]{3})([0-9]{4})([0-9]+)/;

}

 

while( RegPhonNum.test(str) ) {

str = str.replace(RegPhonNum, DataForm);

}

return str;

}


 


 

2. 입력박스
전화번호 : <input type='text' maxlength='13' onkeyup ='MaskPhon(this);' onkeydown='MaskPhon(this);'  >
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2012년 9월 18일 화요일

인감등록은 관할지 주민센터에서... ㅊㅊ

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2012년 9월 13일 목요일

Linux - Search and replace over multiple files.

예제.
<link rel="stylesheet" type="text/css" href="../includes/style.css">

위의 코드를 아래처럼 변경 하고 싶을 때.
<link rel="stylesheet" type="text/css" href="admin.css">

 

 

 
perl -pi -w -e 's/\.\.\/includes\/style\.css/admin\.css/g;' *.php

확장자가 php인 파일에서 ../includes/style.css 를 admin.css 로 모든 부분 변경.

 

Linux - Search and replace over multiple files..
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