
Replication Attributes under cn=replica, cn="suffixDN", cn=mapping tree, cn=config
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2.3.7.9. nsDS5ReplicaName
This attribute specifies the name of the replica with a unique identifier for internal operations. If it is not
specified, this unique identifier is allocated by the server when the replica is created.
NOTE
It is recommended that the server be permitted to generate this name. However, in certain
circumstances, for example, in replica role changes (master to hub etc.), this value needs
to be specified. Otherwise, the server will not use the correct changelog database, and
replication fails.
This attribute is destined for internal use only.
Parameter
Description
Entry DN
cn=replica, cn=
suffixDN
, cn=mapping tree,
cn=config
Valid Values
Default Value
Syntax
DirectoryString (a UID identifies the replica)
Example
nsDS5ReplicaName:
66a2b699-1dd211b2-807fa9c3-a58714648
2.3.7.10. nsDS5ReplicaPurgeDelay
This attribute controls the maximum age of deleted entries (tombstone entries) and state information.
The Directory Server stores tombstone entries and state information so that when a conflict occurs in a
multi-master replication process, the server resolves the conflicts based on the timestamp and replica
ID stored in the change sequence numbers.
An internal Directory Server housekeeping operation periodically removes tombstone entries
which are older than the value of this attribute (in seconds). State information which is older than
the
nsDS5ReplicaPurgeDelay
value is removed when an entry which contains the the state
information is modified.
Not every tombstone and state information may be removed because, with multi-master replication,
the server may need to keep a small number of the latest updates to prime replication, even if they are
older than the value of the attribute.
This attribute specifies the interval, in seconds, to perform internal purge operations on an entry. When
setting this attribute, ensure that the purge delay is longer than the longest replication cycle in the
replication policy to preserve enough information to resolve replication conflicts and to prevent the
copies of data stored in different servers from diverging.
Parameter
Description
Entry DN
cn=replica, cn=
suffixDN
, cn=mapping tree,
cn=config
Valid Range
0 (keep forever) to maximum 32-bit integer
(2147483647)
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