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Installing & Configuring OpenLDAP (Hands On Lab)
This document provides instructions on installing and configuring OpenLDAP, an open source LDAP directory service. It discusses downloading and compiling OpenLDAP, editing the main configuration file slapd.conf, starting and stopping the OpenLDAP service, and populating the directory with sample entries using an LDIF file and the ldapmodify tool. The goal is to set up a basic test OpenLDAP directory with entries for people in an organization.
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Installing & Configuring OpenLDAP (Hands On Lab)
- 1. © 2006 Hewlett-PackardDevelopment Company, L.P. The information contained herein is subject to change without notice GET CONNECTED People. Training. Technology. HP Technology Forum 2006 Installing & Configuring OpenLDAP Michael Lamont Senior Software Engineer, Process Software
- 2. 2 18 July2014 Agenda • Introduction to OpenLDAP • Installing OpenLDAP • Configuring OpenLDAP • Populating an LDAP directory • Basic searching
- 3. 3 18 July2014 OpenLDAP • OpenLDAP is one of the most popular LDAP packages in use today. • OpenLDAP is: − Free − Open source − Standards-compliant (LDAPv3) − Portable (runs pretty much anywhere)
- 4. 4 18 July2014 Obtaining OpenLDAP • OpenLDAP is available from http://www.openldap.org/ • Always use the latest version available. • As of now, 2.3.27 is latest.
- 5. 5 18 July2014 Obtaining OpenLDAP • Download OpenLDAP (and example LDIF): $ ftp cheese.process.com Name (cheese.process.com): hp Password: hp ftp> prompt ftp> bi ftp> mget * ftp> quit $
- 6. 6 18 July2014 Installing OpenLDAP • Uncompress and un-archive: $ gzip -d openldap-2.3.27.tgz $ tar xfv openldap-2.3.27.tar
- 7. 7 18 July2014 Installing OpenLDAP • Change directories to the distribution directory, and run the configure script: $ cd openldap-2.3.27 $ ./configure –-prefix=/usr/local/
- 8. 8 18 July2014 Installing OpenLDAP • Run make depend to build some internal programs that the OpenLDAP build process depends on: $ make depend
- 9. 9 18 July2014 Installing OpenLDAP • Build OpenLDAP by running make: $ make
- 10. 10 18 July2014 Installing OpenLDAP • Run the OpenLDAP test suite to make sure everything was built correctly: $ make test
- 11. 11 18 July2014 Installing OpenLDAP • Run make install as root to install OpenLDAP: $ su Password: bill+dave # make install
- 12. 12 18 July2014 Configuring OpenLDAP • Main configuration file is slapd.conf in /usr/local/etc/openldap/ • Contains list of configuration variables and their values. • Detailed info about every configuration variable is in OpenLDAP Administrator’s Guide.
- 13. 13 18 July2014 Configuring OpenLDAP include /usr/local/etc/openldap/schema/core.schema include /usr/local/etc/openldap/schema/cosine.schema include /usr/local/etc/openldap/schema/inetorgperson.schema • A schema describes objects that can exist in an LDAP directory. • core.schema and cosine.schema files include definitions for basic LDAP objects. • inetorgperson.schema describes inetOrgPerson object that lots of LDAP-integrated software uses.
- 14. 14 18 July2014 Configuring OpenLDAP loglevel 264 pidfile /usr/local/var/run/slapd.pid argsfile /usr/local/var/run/slapd.args • loglevel is bitmask that sets the level of LDAP debugging. • OpenLDAP’s process ID is stored in pidfile - used by scripts. • argsfile contains command line arguments that OpenLDAP will automatically use when started.
- 15. 15 18 July2014 Configuring OpenLDAP database bdb • The database variable specifies the backend database used by OpenLDAP to store data. • The bdb module supports the Berkeley DB, which OpenLDAP uses by default.
- 16. 16 18 July2014 Configuring OpenLDAP suffix "dc=apes.example,dc=com" • Specifies the name of the base entry in the directory. • All other directory entries descend from this object. • Should be based on the local domain name.
- 17. 17 18 July2014 Configuring OpenLDAP rootdn "cn=Directory Manager,dc=apes.example,dc=com" rootpw secret • The root Distinguished Name (DN) is the directory administrator. • Can read, write, and search any part of the directory. • Value of suffix should be part of DN. • rootpw is the password used to access the rootDN account.
- 18. 18 18 July2014 Configuring OpenLDAP directory /usr/local/var/openldap-data index objectClass eq • directory specifies where the directory database files are located. − Must exist − Should only be accessible by user OpenLDAP runs as. • index specifies attributes that OpenLDAP should maintain indexes for. • Indexes speed up searches that use an indexed attribute.
- 19. 19 18 July2014 Starting OpenLDAP • Run slapd as root to start OpenLDAP: # /usr/local/libexec/slapd
- 20. 20 18 July2014 Starting OpenLDAP • Run ps –ef and look for the slapd process to verify that it’s running: $ ps –ef | grep slapd root 23932 1 09:52:03 ? 0:00 slapd $
- 21. 21 18 July2014 Stopping OpenLDAP • Shut down OpenLDAP by sending slapd an interrupt signal (SIGINT). • This lets OpenLDAP shut down gracefully. • NEVER use kill –9 to shut down OpenLDAP – you can corrupt the directory databases. # kill -INT `cat /usr/local/var/run/slapd.pid`
- 22. 22 18 July2014 Populating OpenLDAP • An LDAP directory without any entries isn’t very useful. • ldapmodify is used to add or modify directory entries. • New entries are specified using an LDIF file. • We’re going to use a sample LDIF file that contains: − A root entry − A “people” organizational unit (ou) − Two inetOrgPerson objects
- 23. 23 18 July2014 Sample LDIF File • Root entry: dn: dc=apes.example,dc=com dc: apes.example objectClass: dcObject objectClass: organizationalUnit ou: Apes Incorporated
- 24. 24 18 July2014 Sample LDIF File • “people” organizational unit: dn: ou=people,dc=apes.example,dc=com ou: people objectClass: organizationalUnit
- 25. 25 18 July2014 Sample LDIF File • First inetOrgPerson: dn: cn=Charlton Heston,ou=people,dc=apes.example,dc=com cn: Charlton Heston sn: Heston mail: [email protected] telephoneNumber: 508-555-1212 objectclass: inetOrgPerson
- 26. 26 18 July2014 Sample LDIF File • Second inetOrgPerson: dn: cn=Roddy McDowall,ou=people,dc=apes.example,dc=com cn: Roddy McDowall sn: McDowall mail: [email protected] telephoneNumber: 508-555-1234 objectclass: inetOrgPerson
- 27. 27 18 July2014 LDIF File “Gotchas” • Very important: each entry in LDIF file has to be separated by exactly one blank line. • Blank line can’t have spaces, tabs, or any other kind of white space on it. • “value provided more than once” errors will occur if line isn’t completely blank.
- 28. 28 18 July2014 Adding Entries To The Directory • The ldapmodify command is used to add entries to the directory. • OpenLDAP has to be running for ldapmodify to work. • Supply ldapmodify with root DN and password, since it needs write access to the directory. $ ldapmodify –D "cn=Directory Manager,dc=apes.example,dc=com” -w secret -x -a -f hptf2006.ldif
- 29. 29 18 July2014 Verify Entries Added • The ldapsearch tool can be used to verify that the new entries were added. $ ldapsearch -x -b "dc=apes.example,dc=com"
- 30. 30 18 July2014