Hello there!
Fault Locating
1.Query the log and find the log contains the "Failed to install ldap" message.
2.Check /var/log/Bigdata/oldapserver/ldapserver_install.log and find the following information:
2014-12-09 21:52 566 linux-126 SlapdServer ERROR ldap server rpm is not installed!
2014-12-09 21:52 569 linux-126 SlapdServer ERROR ldap server rpm is not installed!
LADP-related RPM packages are not installed.
Solution
Run the preinstall script to add the LADP-related RPM packages.