[Dovecot] replication howto

[Matteo Cazzador]

Hi, thank's a lot! for your detailed answer.

About ssh (excuse for my english) i think you correctly understand
what is "my problem"
with virtual user (i have no system user ) and there are not ssh
account. So i must use a dedicate account for replication (ssh)
that must act sync for all virtual mail account.
Thank' s  i try you suggest now!








Il 15 marzo 2012 18:09, Michael Grimm <trashcan at odo.in-berlin.de> ha scritto:
> Hi --
>
> On 15.03.2012, at 17:42, Matteo Cazzador wrote:
>
>> Hello, excuse me but there is some documentation about replication now?
>
> Not that I'm aware of.
>
>> I dont' understand where i must put the lines below (dovecot.conf? ,
>> 20-imap?)
>
> You can put them wherever you wish, as long as you include that part
> of your configuration. Myself, I'm still using a single dovecot.conf,
> only.
>
>> Another question, i use virtual users on mysql backend , so for
>> replication i need to give ssh at every virtual users?
>> Or i can use a only use a system ssh user?
>
> If I'm not mistaken, you can use a single ssh user, and you could use
> the vmail user for instance. That's what I do, and I'm using sqlite for
> userdb.
>
> Here's my configuration:
> -----------------------------------------------------------------------
>
> If you choose to run ssh on a different port from the default one, you need:
>
>   ## ssh command line used in dsync replication (ssh port added)
>   #
>   dsync_remote_cmd = ssh -p 1234 -l%{login} %{host} doveadm dsync-server -u%u -l%{lock_timeout} -n%{namespace}
>
>
>
> If not, you can start here:
>
>   ## --- DSYNC REPLICATION ----------------------------------------
>   #
>   # aggregator, replicator, doveadm, and config needed, and
>   # dsync_remote_cmd if running ssh via non-default port
>   #
>   service aggregator {
>        # give enough permissions for mail processes
>        #
>        fifo_listener replication-notify-fifo {
>                user = vmail
>                mode = 0600
>        }
>        unix_listener replication-notify {
>                user = vmail
>                mode = 0600
>        }
>   }
>   service replicator {
>        # start replication at startup
>        #
>        process_min_avail = 1
>   }
>   service doveadm {
>        # if you're using a single virtual user, set this to start ssh as vmail
>        # (not root)
>        #
>        user = vmail
>   }
>   service config {
>        # needed to grant access to /var/run/dovecot/config for service doveadm
>        #
>        unix_listener config {
>                user = vmail
>        }
>   }
>
>
>
> The following part is for server 1, only:
>
>   ## --- PLUGINS ----------------------------------------
>   #
>   # dsync replication plugin
>   #
>   plugin {
>        # this host replicates to remote host
>        #
>        mail_replica = remote:vmail at server2.domain
>
>        # run full synchronization mode every other hour
>        # (default is every 24 hours)
>        #
>        replication_full_sync_interval = 1 hours
>   }
>
>
>
> The following part is for server 2, only:
>
>   ## --- PLUGINS ----------------------------------------
>   #
>   # dsync replication plugin
>   #
>   plugin {
>        # this host replicates to remote host
>        #
>        mail_replica = remote:vmail at server1.domain
>
>        # run full synchronization mode every other hour
>        # (default is every 24 hours)
>        #
>        replication_full_sync_interval = 1 hours
>   }
>
> HTH,
> Michael
>



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Ing. Matteo Cazzador
Email: mcazzador at gmail.com
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