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c0630950a1
Many attributes in IPA (e.g. manager, memberuser, managedby, ...) are used to store DNs of linked objects in IPA (users, hosts, sudo commands, etc.). However, when the linked objects is deleted or renamed, the attribute pointing to it stays with the objects and thus may create a dangling link causing issues in client software reading the data. Directory Server has a plugin to enforce referential integrity (RI) by checking DEL and MODRDN operations and updating affected links. It was already used for manager and secretary attributes and should be expanded for the missing attributes to avoid dangling links. As a prerequisite, all attributes checked for RI must have pres and eq indexes to avoid performance issues. Thus, the following indexes are added: * manager (pres index only) * secretary (pres index only) * memberHost * memberUser * sourcehost * memberservice * managedby * memberallowcmd * memberdenycmd * ipasudorunas * ipasudorunasgroup Referential Integrity plugin is updated to enforce RI for all these attributes. Unit tests covering RI checks for all these attributes were added as well. Note: this update will only fix RI on one master as RI plugin does not check replicated operations. https://fedorahosted.org/freeipa/ticket/2866
Ground rules on adding new schema Brand new schema, particularly when written specifically for IPA, should be added in share/*.ldif. Any new files need to be explicitly loaded in ipaserver/install/dsinstance.py. These simply get copied directly into the new instance schema directory. Existing schema (e.g. in an LDAP draft) may either be added as a separate ldif in share or as an update in the updates directory. The advantage of adding the schema as an update is if 389-ds ever adds the schema then the installation won't fail due to existing schema failing to load during bootstrap. If the new schema requires a new container then this should be added to install/bootstrap-template.ldif.