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4.3. Tracking the Bind DN for Plug-in Initiated Updates

One change to an entry can trigger other, automatic changes across the directory tree. When a user is deleted, for example, that user is automatically removed from any groups it belonged to by the Referential Integrity Postoperation plug-in.
The initial action is shown in the entry as being performed by whatever user account is bound to the server, but all related updates (by default) are shown as being performed by the plug-in, with no information about which user initiated that update. For example, using the MemberOf Plug-in to update user entries with group membership, the update to the group account is shown as being performed by the bound user, while the edit to the user entry is shown as being performed by the MemberOf Plug-in: 
dn: cn=example_group,ou=groups,dc=example,dc=com
modifiersname: uid=example,ou=people,dc=example,dc=com

dn: uid=example,ou=people,dc=example,dc=com
modifiersname: cn=memberOf plugin,cn=plugins,cn=config
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The nsslapd-plugin-binddn-tracking parameter enables the server to track which user originated an update operation, as well as the internal plug-in which actually performed it. The bound user is shown in the modifiersname and creatorsname operational attributes, while the plug-in which performed it is shown in the internalModifiersname and internalCreatorsname operational attributes. For example: 
dn: uid=example,ou=people,dc=example,dc=com
modifiersname: uid=admin,ou=people,dc=example,dc=com
internalModifiersname: cn=memberOf plugin,cn=plugins,cn=config
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The nsslapd-plugin-binddn-tracking parameter tracks and maintains the relationship between the bound user and any updates performed for that connection.

Note

The internalModifiersname and internalCreatorsname attributes always show a plug-in as the identity. This plug-in could be an additional plug-in, such as the MemberOf Plug-in. If the change is made by the core Directory Server, then the plug-in is the database plug-in, cn=ldbm database,cn=plugins,cn=config.
To enable tracking the Bind DN for plug-in-initiated updates using the command line:
  1. Set the nsslapd-plugin-binddn-tracking parameter to on: 
    # dsconf -D "cn=Directory Manager" ldap://server.example.com config replace nsslapd-plugin-binddn-tracking=on
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  2. Restart the instance: 
    # dsctl instance_name restart
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To enable tracking the Bind DN for plug-in-initiated updates using the web console:
  1. Open the Directory Server user interface in the web console. See Section 1.4, “Logging Into Directory Server Using the Web Console”.
  2. Select the instance.
  3. Open the Server Settings menu, and select the Server Settings entry.
  4. On the Advanced Settings tab, select Enable Plugin Bind DN Tracking.
  5. Click Save.
  6. Restart the instance. See Section 1.5.2, “Starting and Stopping a Directory Server Instance Using the Web Console”.
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