- Previous message: Rich Wales: "Cyrus replication and file system problem"
- Maybe in reply to: Rich Wales: "Cyrus replication and file system problem"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
|
|
|
From: Bron Gondwana (no email)
Date: Sun Sep 16 2007 - 04:12:36 EDT
On Sat, 15 Sep 2007 23:10:55 -0700, "Rich Wales" <> said:
> I'm running Cyrus 2.3.9 on a small server (less than 10 accounts). I'm
> thinking of using replication to put a second copy of the mail store on
> a remote server.
>
> The twist is that I'm planning to configure the remote replica to put
> its Cyrus spool in a file system that is encrypted (using "truecrypt").
> Since the spool directory will need to be mounted by hand (with a pass
> phrase typed in manually by me), I need to deal with the possibility
> that Cyrus might be running but the spool directory is missing (e.g.,
> if the server has just rebooted and I haven't had a chance to log in
> and mount the encrypted file system yet).
>
> My question is, will Cyrus's replication work properly in an environment
> like this? Obviously, nothing can get stored on the replica server if
> the spool directory is down, but if the master tries (unsuccessfully) to
> synchronize new messages while the replica's spool directory is offline,
> will everything eventually end up clean after the file system has been
> mounted on the replica? Or is there a danger of activity on the master
> being lost?
>
> As best I can tell, this is NOT the same as a situation in which the
> replica server is completely down. In my scenario, the replica server
> will be running, and the Cyrus application will be running, but the
> spool directory will be missing.
>
> Is there anything in particular (configuration options, messy kludges,
> etc.) that I need to do in a setup like this in order for replication
> to work?
Yeah, don't start the replica automatically - start cyrus in the script
that mounts the filesystem.
(you don't _have_ to have start cyrus on boot)
Also, see my post the other day and various in the archives about the
need to monitor synchronisation and restart sync_client after replica
restarts. There's no polite shutdown mode.
Bron.
-- Bron Gondwana ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
|
|
|