Re: continuous replication

Subject: Re: continuous replication

From: Andre LaBranche <email@hidden>

Date: Tue, 5 Jun 2007 16:15:48 -0700

Delivered-to: email@hidden

On Jun 5, 2007, at 11:28 AM, Pete Fuller wrote:

10.9 server that is set up as open directory master. I've got an issue where Password Server is continually replicating every minute. I've cut the replicas down to just one and changed the settings to replicate every 90 minutes instead of on change. I actually demoted the replica completely and added back yesturday afternoon. This actually ran as advertised overnight and this morning, then about noon, it started replicating repeatedly again. I made no change in the directory at all, there shouldn't have been any changes at all.
Has anyone seen this? Any ideas? It really bogs down the logins when this starts up.
Thanks
P

Here's a small snippet of the password replication log...

Jun 5 2007 14:05:20    SYNC PULL: providing data to 168.25.80.110 after 06/05/2007 02:05:43 PM
Jun 5 2007 14:05:20    SYNC PULL: updating 0 records
Jun 5 2007 14:05:24    Sending Kerberos data to "Replica1"
Jun 5 2007 14:05:25    updating replica list with on-disk changes
Jun 5 2007 14:06:23    SYNC PULL: providing data to 168.25.80.110 after 06/05/2007 02:06:46 PM
Jun 5 2007 14:06:23    SYNC PULL: updating 0 records
...

I've seen something like this, though I believe in my case it was actually bouncing a few records back and forth with each sync.

Are your clocks in sync across all servers?

You may have luck by stripping the sync dates out of both password servers, thus forcing a full sync. This can be accomplished by running NeST -stripsyncdates. I don't recall if you need to have PWS stopped before doing this, so it would be best to stop it. This may cause some interruption for clients, so do it at a non-peak time.

cd /System/Library/LaunchDaemons

launchctl unload -w com.apple.PasswordService.xml; NeST -stripsyncdates ; launchctl load -w com.apple.PasswordService.xml

Not sure if this would be needed on both servers, but if you do run it on both, it might be a good idea not to do them both at the same time.

HTH,

-Andre

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References:

>continuous replication (From: "Pete Fuller" <email@hidden>)