Brutal and bloody solution is certainly something I don't want to do :-)
Thanks to all who responsed on this. Having read through them and
thought about this a little more I am going to use an SQL database.
We currently take in around 0.5 million messages a day. I have a feeling
that sharing a file based db is just asking for trouble!
Thanks,
Dean
Gary W. Smith wrote:
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, September 20, 2005 9:39 AM
To: Dean Baldwin
Cc: users@spamassassin.apache.org
Subject: Re: NFS and SA/Bayes DB
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Dean Baldwin writes:
Hi,
I currently have a cluster of inbound MXs running Amavis/SA etc. At
the
moment they are running as single entities in the sense that they do
not
share their databases.
Has anybody tried this or any other method of shared db for multiple
MXs?
Yes, we did. It was brutal and bloody but it worked. Basically we had
a master that we rsync'ed across the network to all of the endpoints on
a scheduled basis (4 times a day). Then we had a job on each machine to
swap those bayes DB's and restart SA. Did I mention it was bloody?
It sounds like an SQL db is the best option. NFS sharing is certainly
not
recommended.
With any luck one of the other large scale users using shared SQL dbs
might pipe up with comments here ;)
We have 4 MX servers for incoming mail that call back to two SA servers.
These SA servers use MySQL as the backend for both bayes and AWL. Seems
to work just fine and actually seems to be a little faster for us as
well. We don't use Amavis but instead use a commercial AV scanner that
runs on it's own servers as well.
Our backend MySQL is running Linux-HA with DRBD on a pair of Dell 4700's
with 1gb ram.
The SA servers are running on two Dell 4700's (with HT enabled) with 2gb
ram.
The front end MX servers are running on a mixed set of dell
workstations.
We have been playing with this environment for some time swapping
hardware in and out but for the most part the environment has a very low
load balance.
Typical email is about 170k emails per day.
HTH...
Gary Smith
