Manually Replicating Directory Partitions
From SambaWiki
In some situations, it is necessary to manually force a replication between two domain controllers (DC). You need to run the replication for every Active Directory (AD) partition separately.
To replicate the AD partitions from the domain controller "DC1" to "DC2", run:
# samba-tool drs replicate DC2 DC1 dc=samdom,dc=example,dc=com Replicate from DC1 to DC2 was successful. # samba-tool drs replicate DC2 DC1 DC=ForestDnsZones,DC=samdom,DC=example,DC=com Replicate from DC1 to DC2 was successful. # samba-tool drs replicate DC2 DC1 CN=Configuration,DC=samdom,DC=example,DC=com Replicate from DC1 to DC2 was successful. # samba-tool drs replicate DC2 DC1 DC=DomainDnsZones,DC=samdom,DC=example,DC=com Replicate from DC1 to DC2 was successful. # samba-tool drs replicate DC2 DC1 CN=Schema,CN=Configuration,DC=samdom,DC=example,DC=com Replicate from DC1 to DC2 was successful.
To resyncronise all objects between two domain controllers, pass the "--full-sync" option to the command.