I have a master and nine delta-syncrepl replicas all running on RHEL 4
using OpenLDAP 2.3.38 on the master and all replicas.
The master is configured to purge entries from the accesslog after 12
hours (and checks every 2 hours). I forget where I grabbed that from
why I used it.
Anyway, I have discovered that if one of the replicas gets more than 12
hours behind (ie, is shutdown or we reload the database from yesterday),
that it will grab all the updates that have happened in the last 12
hours and then the CSN of the replica and the master will be in
agreement, but the changes that happened more than the 12 hours (of the
accesslog) ago are not present on the replica.
Is this a configuration mistake I have made (other than setting the
accesslog purge time to 12 hours) or is this a limitation (that I likely
knew at one time and then forgot and now have relearned the hard way)?
Is there an option I can set on the replica's so they will refuse to
start if their CSN is older than the oldest record in the accesslog of
the master when they start up?
If this has been discussed in the past, I'm sorry, I did search, but not
certain of the terms to use, I didn't have any luck finding anything
that looked promising.
Here's the relevant parts of the master's slapd.conf
checkpoint 1024 5
index default eq
syncprov-checkpoint 1000 60
logpurge 12:00 02:00
And from the replica's:
Frank Swasey | http://www.uvm.edu/~fcs
Sr Systems Administrator | Always remember: You are UNIQUE,
University of Vermont | just like everyone else.
"I am not young enough to know everything." - Oscar Wilde (1854-1900)