MRTG nasce per Monitoring di ROUTER Riesce a monitorare qualsiasi contatore SNMP

18 Ottobre 2000 CNAF Michele Michelotto

MRTG nasce per Monitoring di ROUTER

Riesce a monitorare qualsiasi contatore SNMP

Quindi anche la maggior parte degli switch “managed”

Ma anche computer general purpose.


I log filesOspd03.pd.infn.it> more garrb-16aal5.log971780102 385491343 3262750497971780102 108110 136510 108110 136510971779202 82392 563641 82392 563641971779200 82392 563641 82392 563641971778900 82392 563641 82392 563641971778600 82360 563533 82392 563641971778300 72999 531482 72999 531482971778000 72999 531482 72999 531482971777700 72898 529309 72999 531482971777400 57987 205656 57987 205656971777100 57987 205656 57987 205656

..omissis..

971548200 11477 86393 15353 118439971546400 11948 89613 15353 118439971544600 14928 264001 17118 390472971542800 15044 201285 18408 390472971541000 19427 141293 27024 163605971539200 13598 66418 27024 163605971537400 15470 130078 16533 148518

Ultimo Valore

Valori recenti

Valori mediati


File di configurazioneWorkDir: /d1/mrtg/htmlThreshDir: /d1/mrtg/threshTitle[^]: Padova LAN - Monitoring with MRTGPageTop[^]: <H1> INFN Padova LAN devices </H1><p>WriteExpires: YesWithPeak[_]: ymw## ospd00#PageTop[ospd00feth]: In and Out Octets on ospd00 Fast EthernetMaxBytes[ospd00feth]: 12500000Target[ospd00feth]: ifInOctets.1&ifOutOctets.1:public@ospd00#Unscaled[ospd00feth]: ymwWithPeak[ospd00feth]: ymw#

USO il nome abbreviato


La temperatura del nostro router CISCO


File di configurazione# Temperature#MaxBytes[pdags2.temp]: 100Target[pdags2.temp]:

1.3.6.1.4.1.9.9.13.1.3.1.3.1&1.3.6.1.4.1.9.9.13.1.3.1.3.3:public@pdags2PageTop[pdags2.temp]: <H1> Temperatura di pdags2 </H1>Options[pdags2.temp]: gauge, noinfo, absolute, nopercentShortLegend[pdags2.temp]: °CYLegend[pdags2.temp]: Degree CelsiusLegend1[pdags2.temp]: inletLegend2[pdags2.temp]: outletLegend3[pdags2.temp]: max-inletLegend4[pdags2.temp]: max-outletLegendI[pdags2.temp]: inletLegendO[pdags2.temp]: outletWithPeak[pdags2.temp]: ymThreshMaxI[pdags2.temp]: 26ThreshProgI[pdags2.temp]: /d1/mrtg/bin/threshold2.plThreshProgOKI[pdags2.temp]: /d1/mrtg/bin/thresholdOK2.pl

Uso l’ OID


File di configurazione## User and Process#MaxBytes[ospd00.usr.proc]: 1000Target[ospd00.usr.proc]: 1.3.6.1.2.1.25.1.5.0&1.3.6.1.2.1.25.1.6.0:public@ospd00PageTop[ospd00.usr.proc]: <H1> User and Process on ospd00 </H1> <BR><H2><FONT

COLOR=blue>Current Users</FONT> and <FONT COLOR=red>Current Process</FONT></H2>Options[ospd00.usr.proc]: gauge, noinfo, absolute, nopercentShortLegend[ospd00.usr.proc]: unitYLegend[ospd00.usr.proc]: User and Process#Colours[ospd00.usr.proc]: BLUE#1000FF,RED#FF0000,BLUE#1000FF,RED#FF0000Legend1[ospd00.usr.proc]: usersLegend2[ospd00.usr.proc]: processesLegend3[ospd00.usr.proc]: max usersLegend4[ospd00.usr.proc]: max processesLegendI[ospd00.usr.proc]: UsersLegendO[ospd00.usr.proc]: ProcsWithPeak[ospd00.usr.proc]: ymwd#

Uso l’ OID


Lo spazio su disco

Non c’è un contatore SNMP, si deve usare uno script


Monitor disco locale# Spool Disk Usage on ospd03.#Target[spool.disk.alloc]: `/d1/mrtg/script/diskspace.sh /dev/rz2a`Title[spool.disk.alloc]: Disk Usage /dev/rz2a (/var)PageTop[spool.disk.alloc]: <H1> Disk Usage /dev/rz2a (/var)</H1>Options[spool.disk.alloc]: gauge, nopercentMaxBytes[spool.disk.alloc]:100Unscaled[spool.disk.alloc]: dwmyWithPeak[spool.disk.alloc]: dwmyYLegend[spool.disk.alloc]: % UsedShortLegend[spool.disk.alloc]: %Legend1[spool.disk.alloc]: Avg Percent Diskspace UsedLegend2[spool.disk.alloc]: Avg Percent Inodes UsedLegendI[spool.disk.alloc]: DiskspaceLegendO[spool.disk.alloc]: InodesThreshMaxI[spool.disk.alloc]: 65ThreshProgI[spool.disk.alloc]: /d1/mrtg/bin/threshold2.plThreshProgOKI[spool.disk.alloc]: /d1/mrtg/bin/thresholdOK2.pl


Script per disco locale!/bin/sh# by Michele Michelotto 18 Aug 1999# Get various diskspace numbers for MRTG.## This is the output format by df -k -i# usage: diskspace.sh Filesystem# i.e. diskpace.sh /dev/rz2a# where /dev/rz2a is the filesys.#

retch=`df -k -i $1 | tail -1 | tr -d %`set $retch # break apart into fields using IFS seperatorsecho $5 # Percentage diskspace usedecho $8 # Percentage inodes used


Threshold!/usr/local/bin/perl# Called when MRTG detects a threshold problem for a variable.# ARGV[0] = Parameter name, such as 'mpclm1005.disk0'.# ARGV[1] = Threshold value which was breached, such as "95".# ARGV[2] = Actual current value of the parameter, such as "100".# Example: thisprogram mpclm1005 95 100my($timestr, $param, $thresh, $value, $message, $logfile);$timestr = localtime(time);$param = $ARGV[0];$thresh = $ARGV[1];$value = $ARGV[2];$logfile = "/tmp/mrtgthresh.log";$emailprog = "/usr/bin/mailx -s 'MRTG Thresh of $param '";$emailuser = "supporto\@pd.infn.it";# Do something meaningful with the information.# Send an email message, log to a file, execute some script...if ($thresh > $value) { $abovebelow = "below"; } else { $abovebelow = "above"; }$message .= "$param ($value) is $abovebelow threshold ($thresh)";# Log it.open(LOG, ">>$logfile");print LOG "$timestr $message\n";close(LOG);# Email it.system("echo '$message' | $emailprog $emailuser");exit(0);


I mail entranti e uscenti dal mail server


MailServer lo script!/usr/local/bin/perl5# this script relies on the sendmail.st file being activated.# the data is called via mailstats that run out of inetd, on port 7256.open (OLD,"</tmp/mailstat01.old") or die "can't open file!\n";# read the old datawhile (<OLD>) { if ($. == "1") { $count = $_; } ($oldfrm, $oldto) = split (' ',$count);}close (OLD);$remote = "ospd01";$port = "7256"; $iaddr = inet_aton($remote) or die "no host: $remote";$paddr = sockaddr_in($port, $iaddr);$proto = getprotobyname ('tcp');socket (SOCK, PF_INET, SOCK_STREAM, $proto) or die "socket: $!";connect (SOCK, $paddr) or die "connect: $!";


MailServer lo script continuawhile (<SOCK>) { if ($. == "5" ) { $line = $_; ($a, $curfrm, $b, $curto, $c, $d) = split(' ',$line);# do some sums$msgsfrm = $curfrm - $oldfrm;$msgsto = $curto - $oldto;chomp $msgsfrm;chomp $msgsto;# open the old file for overwriteopen (OLD,">/tmp/mailstat01.old") or die "can't open file!\n";# print the data for mrtg print "$msgsfrm\n$msgsto\n1\nospd01\n";# print the data to the old file print OLD "$curfrm $curto\n"; } #endif}close (SOCK) or die "close: $!";exit;$!";


Nell’albero di un linux[michelot@pcferrari noi]$ snmpwalk lxde01 public .1.3.6.1.4.1.2021 | moreenterprises.ucdavis.memory.memIndex.0 = 0enterprises.ucdavis.memory.memErrorName.0 = swapenterprises.ucdavis.memory.memTotalSwap.0 = 770900enterprises.ucdavis.memory.memAvailSwap.0 = 767484enterprises.ucdavis.memory.memTotalReal.0 = 257728enterprises.ucdavis.memory.memAvailReal.0 = 226200enterprises.ucdavis.memory.memTotalFree.0 = 31528enterprises.ucdavis.memory.memMinimumSwap.0 = 16000enterprises.ucdavis.memory.memShared.0 = 21648enterprises.ucdavis.memory.memBuffer.0 = 118108enterprises.ucdavis.memory.memCached.0 = 68748enterprises.ucdavis.memory.memSwapError.0 = 0enterprises.ucdavis.memory.memSwapErrorMsg.0 =


Nell’albero di un linuxenterprises.ucdavis.laTable.laEntry.laIndex.1 = 1enterprises.ucdavis.laTable.laEntry.laIndex.2 = 2enterprises.ucdavis.laTable.laEntry.laIndex.3 = 3enterprises.ucdavis.laTable.laEntry.laNames.1 = Load-1enterprises.ucdavis.laTable.laEntry.laNames.2 = Load-5enterprises.ucdavis.laTable.laEntry.laNames.3 = Load-15enterprises.ucdavis.laTable.laEntry.laLoad.1 = 0.36enterprises.ucdavis.laTable.laEntry.laLoad.2 = 0.12enterprises.ucdavis.laTable.laEntry.laLoad.3 = 0.03enterprises.ucdavis.laTable.laEntry.laConfig.1 = 12.00enterprises.ucdavis.laTable.laEntry.laConfig.2 = 12.00enterprises.ucdavis.laTable.laEntry.laConfig.3 = 12.00enterprises.ucdavis.laTable.laEntry.laLoadInt.1 = 35enterprises.ucdavis.laTable.laEntry.laLoadInt.2 = 11enterprises.ucdavis.laTable.laEntry.laLoadInt.3 = 2enterprises.ucdavis.laTable.laEntry.laLoadFloat.1 = Opaque: Float: 0.360000enterprises.ucdavis.laTable.laEntry.laLoadFloat.2 = Opaque: Float: 0.120000enterprises.ucdavis.laTable.laEntry.laLoadFloat.3 = Opaque: Float: 0.030000enterprises.ucdavis.laTable.laEntry.laErrorFlag.1 = 0enterprises.ucdavis.laTable.laEntry.laErrorFlag.2 = 0enterprises.ucdavis.laTable.laEntry.laErrorFlag.3 = 0enterprises.ucdavis.laTable.laEntry.laErrMessage.1 = enterprises.ucdavis.laTable.laEntry.laErrMessage.2 = enterprises.ucdavis.laTable.laEntry.laErrMessage.3 =


Nell’albero di un linuxenterprises.ucdavis.systemStats.ssIndex.1 = 1enterprises.ucdavis.systemStats.ssErrorName.1 = systemStatsenterprises.ucdavis.systemStats.ssSwapIn.1 = 0enterprises.ucdavis.systemStats.ssSwapOut.1 = 0enterprises.ucdavis.systemStats.ssIOSent.1 = 0enterprises.ucdavis.systemStats.ssIOReceive.1 = 1enterprises.ucdavis.systemStats.ssSysInterrupts.1 = 13enterprises.ucdavis.systemStats.ssSysContext.1 = 15enterprises.ucdavis.systemStats.ssCpuUser.1 = 0enterprises.ucdavis.systemStats.ssCpuSystem.1 = 0enterprises.ucdavis.systemStats.ssCpuIdle.1 = 14enterprises.ucdavis.version.versionIndex.0 = 1enterprises.ucdavis.version.versionTag.0 = 4.0.1enterprises.ucdavis.version.versionDate.0 = $Date: 1999/08/18 09:51:57 $enterprises.ucdavis.version.versionCDate.0 = Tue Oct 17 12:51:03 2000


La Farm di Delphi/CMS

Uso della CPU



System CPUUser CPU



InterruptContext Switch



IO SentIO Received



Real MemoryFree Memory


Penso sia usato anche nella farm di D.G.O.


Possibili uso in WP2.4

Monitor di variabili SNMP in una farm LinuxScript per chiedere via socket/inetd altri valori non SNMPModifiche a SNMP su Linux per inserire nuove variabiliUso di RRD e front-end grafici separati

con RRD separo la fase di acquisizioneda quella di visualizzazione (on demand)

MRTG nasce per Monitoring di ROUTER Riesce a monitorare qualsiasi contatore SNMP

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