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

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

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

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  1. 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. Michele Michelotto

  2. 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. Michele Michelotto

  3. I log files Ultimo Valore Ospd03.pd.infn.it> more garrb-16aal5.log 971780102 385491343 3262750497 971780102 108110 136510 108110 136510 971779202 82392 563641 82392 563641 971779200 82392 563641 82392 563641 971778900 82392 563641 82392 563641 971778600 82360 563533 82392 563641 971778300 72999 531482 72999 531482 971778000 72999 531482 72999 531482 971777700 72898 529309 72999 531482 971777400 57987 205656 57987 205656 971777100 57987 205656 57987 205656 ..omissis.. 971548200 11477 86393 15353 118439 971546400 11948 89613 15353 118439 971544600 14928 264001 17118 390472 971542800 15044 201285 18408 390472 971541000 19427 141293 27024 163605 971539200 13598 66418 27024 163605 971537400 15470 130078 16533 148518 Valori recenti Valori mediati Michele Michelotto

  4. File di configurazione WorkDir: /d1/mrtg/html ThreshDir: /d1/mrtg/thresh Title[^]: Padova LAN - Monitoring with MRTG PageTop[^]: <H1> INFN Padova LAN devices </H1><p> WriteExpires: Yes WithPeak[_]: ymw # # ospd00 # PageTop[ospd00feth]: In and Out Octets on ospd00 Fast Ethernet MaxBytes[ospd00feth]: 12500000 Target[ospd00feth]: ifInOctets.1&ifOutOctets.1:public@ospd00 #Unscaled[ospd00feth]: ymw WithPeak[ospd00feth]: ymw # USO il nome abbreviato Michele Michelotto

  5. La temperatura del nostro router CISCO Michele Michelotto

  6. File di configurazione # Temperature # MaxBytes[pdags2.temp]: 100 Target[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@pdags2 PageTop[pdags2.temp]: <H1> Temperatura di pdags2 </H1> Options[pdags2.temp]: gauge, noinfo, absolute, nopercent ShortLegend[pdags2.temp]: &nbsp;&#176;C YLegend[pdags2.temp]: Degree Celsius Legend1[pdags2.temp]: inlet Legend2[pdags2.temp]: outlet Legend3[pdags2.temp]: max-inlet Legend4[pdags2.temp]: max-outlet LegendI[pdags2.temp]: inlet LegendO[pdags2.temp]: outlet WithPeak[pdags2.temp]: ym ThreshMaxI[pdags2.temp]: 26 ThreshProgI[pdags2.temp]: /d1/mrtg/bin/threshold2.pl ThreshProgOKI[pdags2.temp]: /d1/mrtg/bin/thresholdOK2.pl Uso l’ OID Michele Michelotto

  7. File di configurazione # # User and Process # MaxBytes[ospd00.usr.proc]: 1000 Target[ospd00.usr.proc]: 1.3.6.1.2.1.25.1.5.0&1.3.6.1.2.1.25.1.6.0:public@ospd00 PageTop[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, nopercent ShortLegend[ospd00.usr.proc]: unit YLegend[ospd00.usr.proc]: User and Process #Colours[ospd00.usr.proc]: BLUE#1000FF,RED#FF0000,BLUE#1000FF,RED#FF0000 Legend1[ospd00.usr.proc]: users Legend2[ospd00.usr.proc]: processes Legend3[ospd00.usr.proc]: max users Legend4[ospd00.usr.proc]: max processes LegendI[ospd00.usr.proc]: Users LegendO[ospd00.usr.proc]: Procs WithPeak[ospd00.usr.proc]: ymwd # Uso l’ OID Michele Michelotto

  8. Lo spazio su disco Non c’è un contatore SNMP, si deve usare uno script Michele Michelotto

  9. 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, nopercent MaxBytes[spool.disk.alloc]:100 Unscaled[spool.disk.alloc]: dwmy WithPeak[spool.disk.alloc]: dwmy YLegend[spool.disk.alloc]: % Used ShortLegend[spool.disk.alloc]: % Legend1[spool.disk.alloc]: Avg Percent Diskspace Used Legend2[spool.disk.alloc]: Avg Percent Inodes Used LegendI[spool.disk.alloc]: Diskspace LegendO[spool.disk.alloc]: Inodes ThreshMaxI[spool.disk.alloc]: 65 ThreshProgI[spool.disk.alloc]: /d1/mrtg/bin/threshold2.pl ThreshProgOKI[spool.disk.alloc]: /d1/mrtg/bin/thresholdOK2.pl Michele Michelotto

  10. 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 seperators echo $5 # Percentage diskspace used echo $8 # Percentage inodes used Michele Michelotto

  11. 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 95 100 my($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); Michele Michelotto

  12. I mail entranti e uscenti dal mail server Michele Michelotto

  13. 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 data while (<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: $!"; Michele Michelotto

  14. MailServer lo script continua while (<SOCK>) { if ($. == "5" ) { $line = $_; ($a, $curfrm, $b, $curto, $c, $d) = split(' ',$line); # do some sums $msgsfrm = $curfrm - $oldfrm; $msgsto = $curto - $oldto; chomp $msgsfrm; chomp $msgsto; # open the old file for overwrite open (OLD,">/tmp/mailstat01.old") or die "can't open file!\n"; # print the data for mrtg print "$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; $!"; Michele Michelotto

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

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

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

  18. La Farm di Delphi/CMS Uso della CPU Michele Michelotto

  19. La Farm di Delphi/CMS System CPU User CPU Michele Michelotto

  20. La Farm di Delphi/CMS Interrupt Context Switch Michele Michelotto

  21. La Farm di Delphi/CMS IO Sent IO Received Michele Michelotto

  22. La Farm di Delphi/CMS Real Memory Free Memory Michele Michelotto

  23. Penso sia usato anche nella farm di D.G.O. Michele Michelotto

  24. Possibili uso in WP2.4 Monitor di variabili SNMP in una farm Linux Script per chiedere via socket/inetd altri valori non SNMP Modifiche a SNMP su Linux per inserire nuove variabili Uso di RRD e front-end grafici separati con RRD separo la fase di acquisizione da quella di visualizzazione (on demand) Michele Michelotto

  25. Michele Michelotto

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