Managing Enterprise Directories: Operational Issues Performance Monitoring Brendan Bellina, University of Notre Dame Base CAMP – Tempe, Arizona February.

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Managing Enterprise Directories: Operational Issues Performance Monitoring Brendan Bellina, University of Notre Dame Base CAMP – Tempe, Arizona February 5-7, 2003 Copyright Brendan Bellina, This work is the intellectual property of the author. Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.

Base CAMP - February 5-7, 2003Middleware: Directories 2 How to present in 33 minutes (or less!) No humor No arbitrary anecdotes No incoherent rambling … but how will we know it is a middleware presentation? That is why there is a page footer. One more thing… Volunteer alarm clock

Base CAMP - February 5-7, 2003Middleware: Directories 3 Presentation Overview Why Monitor Performance What Performance Metrics To Monitor How To Gather Performance Metrics Tools for Performance ND –Orca –Orcallator –Look

Base CAMP - February 5-7, 2003Middleware: Directories 4 Why Monitor Performance Availability It’s up… isn’t it? –Directories often require 7x24 availability Responsiveness It’s fast enough… maybe. –Directories often require extremely fast response Scalability We can handle that… I think. –Structural changes, indices, increases in the # of entries or # of attributes can all affect performance.

Base CAMP - February 5-7, 2003Middleware: Directories 5 What Performance Metrics To Monitor Response time Connection requests Bind requests Bind errors Search requests Search errors Average count & size of search results Directory Cache Hits Directory Cache Tries Bind response time Search response time Current connections Avg connection length Current binds Current searches # Bytes transmitted # Entries transmitted

Base CAMP - February 5-7, 2003Middleware: Directories 6 How To Gather Performance Metrics Directory internal query (iPlanet, OpenLDAP) base search on cn=monitor ldapsearch -h directory.whatsamattau.edu -b"cn=monitor" -s base objectclass=* objectclass=top objectclass=extensibleObject cn=monitor version=Netscape-Directory/4.16 B threads=30 currentconnections=27 totalconnections= dtablesize=1024 readwaiters=0

Base CAMP - February 5-7, 2003Middleware: Directories 7 How To Gather Performance Metrics base search on cn=monitor cont. opsinitiated= opscompleted= entriessent= bytessent= currenttime= Z starttime= Z nbackends=1 dataversion=directory.whatsamattau.edu: ldapserverconfigdn=cn=ldap://:389,dc=directory,dc=whatsamattau,dc=edu backendmonitordn=cn=monitor,cn=ldbm

Base CAMP - February 5-7, 2003Middleware: Directories 8 How To Gather Performance Metrics base search on cn=monitor, cn=ldbm ldapsearch -h directory.whatsamattau.edu -b"cn=monitor,cn=ldbm" -s base objectclass=* objectclass=top objectclass=extensibleObject cn=monitor database=ldbm readonly=0 entrycachehits= entrycachetries= entrycachehitratio=93 currententrycachesize=10000 maxentrycachesize=10000 dbchehits= dbcachetries= dbcachehitratio=96 dbcachepagein=32268 dbcachepageout=851 dbcacheroevict=20160 dbcacherwevict=0 dbfilename-0=wuAttribute_1.db2 dbfilecachehit-0=26 dbfilecachemiss-0=4 dbfilepagein-0=4 dbfilepageout-0=4

Base CAMP - February 5-7, 2003Middleware: Directories 9 How To Gather Performance Metrics LDAP log processing –Read the log files looking for events –Calculate statistics Directory Probing –Ping –Query to directory service –Bind to directory service –SNMP

Base CAMP - February 5-7, 2003Middleware: Directories 10 How To Monitor Performance Metrics NMS (Network Management System) –HP OpenView –CA/UniCenter TNG –IBM NetView Operating System Tools –Win NT Event Viewer –W2K WMI (Windows Management Instrumentation) –W2K Network Monitor; W2K System Monitor –Sun Solaris SE Toolkit

Base CAMP - February 5-7, 2003Middleware: Directories 11 Tools for Performance ND Orca - Orcallator (collector for Solaris statistics) Look – LDAP operational Orca “k”ollector

Base CAMP - February 5-7, 2003Middleware: Directories 12 Orca ( About Orca: Generates web friendly performance graphs based on collected statistical data. Free (will take donations) Open Source Perl Used by Yahoo!/Geocities Used at Notre Dame on 100+ servers Hourly, Daily, Weekly, Monthly, Quarterly, Yearly, All Did I say free?

Base CAMP - February 5-7, 2003Middleware: Directories 13 Notre Dame CRON job runs every 15 minutes to regen graphs Orcallator (SymbEL script included with ORCA) –Written to monitor web servers and Solaris stats –Requires Sun Solaris SE Toolkit (free from –Runs on each directory server to collect statistics – 5 minute averages, 30 second peaks –Data is consolidated on one server for ORCA processing –Modifications by ND to read iPlanet Dir Server 4.16 log

Base CAMP - February 5-7, 2003Middleware: Directories 14 Notre Dame ND Modifications -LDAP connection rate -LDAP Bind rate -LDAP Bind error rate -LDAP search rate -LDAP search error rate -LDAP search results returned rate -Picture is worth 1000 words: -Go to

Base CAMP - February 5-7, 2003Middleware: Directories 15 Look – LDAP operational Orca "k"ollector LDAP supplement to Orca and/or Orcallator Perl script Produces Orca compatible output files Processes iPlanet 4.16 log file Queries directory cn=monitor Queries directory cn=monitor, cn=ldbm Beta 0.90 version currently available at

Base CAMP - February 5-7, 2003Middleware: Directories 16 Look – LDAP operational Orca "k"ollector Connection Rate Bind Rate Bind Error Rate Search Rate Search Error Rate Search Results Returned Rate Connections Operations Initiated Operations Completed Entries Sent Bytes Sent Entry Cache Hits Entry Cache Tries Cache Hit Ratio Database Cache Hits Database Cache Tries Database Cache Hit Ratio Peaks and Averages View live results at

Base CAMP - February 5-7, 2003Middleware: Directories 17 ORCA Look Graph Example #1 LDAP search rate before and after routing was transferred from -specific directory to EDS:

Base CAMP - February 5-7, 2003Middleware: Directories 18 ORCA Look Graph Example #2: Troubleshooting Daily abuse of open LDAP connections. What is different about the weekend?

Base CAMP - February 5-7, 2003Middleware: Directories 19 ORCA Look Graph Example #3: Troubleshooting How long has this been going on? Week 49. What happened in mid-December? Hmmm…

Base CAMP - February 5-7, 2003Middleware: Directories 20 ORCA Look Graph Example #4: Troubleshooting The culprit has been identified and shot.

Base CAMP - February 5-7, 2003Middleware: Directories 21 ORCA Look Graph Example #5: Troubleshooting The sky is blue, the birds are chirping, and all is right with the world.

Base CAMP - February 5-7, 2003Middleware: Directories 22 Links Notre Dame Enterprise Directory Service Notre Dame EDS Performance Statistics - Orcallator or Notre Dame EDS Performance Statistics – Look or ORCA software Look software Brendan Bellina

Base CAMP - February 5-7, 2003Middleware: Directories 23 Copyright Statement Copyright © Brendan Bellina, This work is the intellectual property of the author. Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.