LDAP - Installation Process in Linux

LDAP stands for Lightweight Directory Access Protocol. As the name suggests, it is a lightweight client-server protocol for accessing directory services. LDAP runs over TCP/IP or other connection oriented transfer services.

The LDAP server daemon is called Slapd. Slapd supports a variety of different database backends which you can use.They include the primary choice BDB, a high-performance transactional database backend; LDBM, a lightweight DBM based backend.

Pre-Requirements

1) OpenSSL TLS Libraries

2)Database Software-Slapd's primary database backend, BDB, requires Sleepycat Software Berkeley DB

BerkeleyDB install steps:

1. Download BDB from: wget http://download.oracle.com/berkeley-db/db-5.1.25.tar.gz
2. tar xzvf db-5.1.25.tar.gz
3. cd db-5.1.25
4. ./dist/configure --prefix=/custom/BerkeleyDB/5.1.25/
5. make && make install

This install BDB which will be the backend for OpenLDAP.

Now lets install OpenLDAP.

1. Download Openldap at: wget ftp://ftp.openldap.org/pub/OpenLDAP/openldap-release/openldap-2.4.36.tgz
2. cd openldap-2.4.36
3. Set Library paths:

• export CPPFLAGS="-I /custom/BerkeleyDB/5.1.25/include"
• export LD_LIBRARY_PATH="/custom/BerkeleyDB/5.1.25/lib"
• export LDFLAGS="-L/usr/local/lib -L/custom/BerkeleyDB/5.1.25/lib  -R/data/BerkeleyDB/5.1.25/lib"  //note- this step is optional and can be ignored if we are able to run the configure command wthout any error.

   4. ./configure --prefix=/data/openldap/2.4.36
   5. make
   6. make depend
   7. make install