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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=my_group,ou=groups,dc=example,dc=com
modifiersname: uid=jsmith,ou=people,dc=example,dc=com

dn: uid=bjensen,ou=people,dc=example,dc=com
modifiersname: cn=memberOf plugin,cn=plugins,cn=config
The nsslapd-plugin-binddn-tracking attribute allows 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=bjensen,ou=people,dc=example,dc=com
modifiersname: uid=jsmith,ou=people,dc=example,dc=com
internalModifiersname: cn=memberOf plugin,cn=plugins,cn=config
The nsslapd-plugin-binddn-tracking attribute tracks and maintains the relationship between the bound user and any updates performed for that connection.


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.
The nsslapd-plugin-binddn-tracking attribute is disabled by default. To allow the server to track operations based on bind DN, enable that attribute using ldapmodify:
# ldapmodify -D "cn=Directory Manager" -W -p 389 -h -x

dn: cn=config
changetype: modify
replace: nsslapd-plugin-binddn-tracking
nsslapd-plugin-binddn-tracking: on