I have multiple setups with a Provider(2.6.4) and consumer(2.6.2) with RefreshAndPersist.

From time to time I see data missing in the consumer e.g only groups are present and all users are missing, even though users were never removed from the Provider, and were present in the Consumer beforehand.

On the Provider all data is present and correct.

I can still see the incoming connection, from the Consumers Sync, in the Provider without errors.

No errors on the Comsumer logs from syncrepl (with -256 logs). Attempted to look in debug (-1 logs), but nothing caught my eye.

When this happened I attempted restart services on both the Provider and the Consumer, disabling and re-enabling the sync on the Consumer.

Only clearing the Consumers database seemed to fix the issue.

There maybe be sporatic failures in the network connectivity between both systems.

This is the config on the Consumer

olcSyncrepl: {0}rid=000

  provider=ldaps://Provider:636

  type=refreshAndPersist

  retry="30 5 300 +"

  searchbase="ou=subtree,dc=test,dc=net"

  scope=sub

  schemachecking=on

  binddn="cn=Manager,dc=test,dc=net"

  credentials=credentials

  keepalive=240:10:30