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Re: OL 2.3.18 syncrepl vs slurpd
On 1/19/06 5:01 PM, Quanah Gibson-Mount wrote:
--On Thursday, January 19, 2006 4:01 PM -0500 Aaron Richton
Anyone have any insight to what I've done wrong or where I should
Have you considered delta syncrepl? Look in the tests directory.
I note that Symas has a tech tip available on setting up delta-syncrepl:
There is also a tech tip there discussing the pros and cons of the
different replication mechanisms.
Thank you, I followed that tech tip and after fixing the index
statements to not include spaces (will you take this as an issue report
to fix the tech tip or should I file an ITS somewhere?) I have it working.
Now, I have discovered three things.
1) delta-syncrepl doesn't seem to have any way to filter the amount of
what is sent -- so, it has the same issues that I'm fighting with slurpd
of sending every update to all the replicas and perhaps I do not want
all the updates on all the replicas (this was the reason for me going to
2) There is a DOS against the master server if the consumer codes a bad
logfilter. You will see a bad filter indication in the log on the
master (with loglevel stats) when the consumer starts up. The first
update to the master after that will cause slapd to end with nothing
going into the syslog at all, but suddenly, it's not running anymore.
Given that anyone could fire up a syncrepl consumer and point it at my
master... that's a rather nasty one... Has anyone else noticed it (I
honestly just found it and have not searched in the ITS yet)?
3) loglevel sync on the syncrepl consumer doesn't log anything with
delta-syncrepl. Did I miss something in the slapd.conf(5) man page
about the loglevel to get delta-syncrepl actions logged? Or is it in a
different man page, that I didn't think to look at?