dsync dovecot / Failed connection refused

[Mike Fröhner]

Hello,

I might be wrong, but the port which will be used for the replicator 
port is the value of 'doveadm_port' which in your case is 4711.

Mike;

On 01/23/2017 05:58 PM, Thierry wrote:
> Dear all,
>
> I am using VMWare and I  have cloned my emails server.
> Now I do have two identicals servers, both running the same version of dovecot (2.2.13) and imap.
> Let's call them: server1.domain.ltd  and server2.domain.ltd.
> I would  like to sync both server using dsync.
>
> Dovecot is working well except concerning  the sync.
>
> dsync config server1.domain.ltd
>
> # Enable the replication plugin globally
> mail_plugins = $mail_plugins notify replication
>
> # The mail processes need to have access to the replication-notify fifo and socket.
> service aggregator {
>   fifo_listener replication-notify-fifo {
>     user = vmail
>     mode = 0666
>   }
>   unix_listener replication-notify {
>     user = vmail
>     mode = 0666
>   }
> }
>
> # Enable doveadm replicator commands
> service replicator {
>   unix_listener replicator-doveadm {
>     mode = 0666
>   }
> }
>
> # Create a listener for doveadm-server
> service doveadm {
>   user = vmail
>   inet_listener {
>     port = 12345
>   }
> }
>
> # configure how many dsyncs can be run in parallel (10 by default)
> replication_max_conns = 10
>
> # tell doveadm client to use this port by default
> doveadm_port = 4711
>
> #Both the client and the server also need to have a shared secret
> doveadm_password = {SHA512-CRYPT}$6$rou....................
> # use tcp:hostname as the dsync target
> plugin {
>   #mail_replica = tcp:server2.domain.ltd # use doveadm_port
>   mail_replica = tcp:server2.domain.ltd:12345 # use port 12345 explicitly
> }
>
> service config {
>   unix_listener config {
>     user = vmail
>   }
> }
>
> ***************************************************************************************
>
> dsync config server2.domain.ltd
>
> # Enable the replication plugin globally
> mail_plugins = $mail_plugins notify replication
>
> # The mail processes need to have access to the replication-notify fifo and socket.
> service aggregator {
>   fifo_listener replication-notify-fifo {
>     user = vmail
>     mode = 0666
>   }
>   unix_listener replication-notify {
>     user = vmail
>     mode = 0666
>   }
> }
>
> # Enable doveadm replicator commands
> service replicator {
>   unix_listener replicator-doveadm {
>     mode = 0666
>   }
> }
>
> # Create a listener for doveadm-server
> service doveadm {
>   user = vmail
>   inet_listener {
>     port = 12345
>   }
> }
>
> # configure how many dsyncs can be run in parallel (10 by default)
> replication_max_conns = 10
>
> # tell doveadm client to use this port by default
> doveadm_port = 4711
>
> #Both the client and the server also need to have a shared secret
> doveadm_password = {SHA512-CRYPT}$6$ro.............
> # use tcp:hostname as the dsync target
> plugin {
>   #mail_replica = tcp:server1.domain.ltd # use doveadm_port
>   mail_replica = tcp:server1.domain.ltd:12345 # use port 12345 explicitly
> }
>
> service config {
>   unix_listener config {
>     user = vmail
>   }
> }
>
> To test both port   I have open on  my both servers port 12345 and 4711 :
>
> Iptables server1: ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:4711
>                   ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:12345
>
> Iptables server2: ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:4711
>                   ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:12345
>
>
> doveadm replicator  status '*'
> username                                                                            priority fast sync full sync failed
> user1 at domain.ltd                                                                none     00:01:21  11:25:40  y
> user3 at domain.ltd                                                                none     07:31:16  11:25:41  -
> user2 at domain.ltd                                                                none     00:01:21  11:25:40  y
> user4 at domain.ltd                                                                none     11:25:41  11:25:41  -
> user5 at domain.ltd                                                                none     02:17:03  11:25:41  -
> user6 at domain.ltd                                                                none     11:25:40  11:25:40  -
> user4 at domain.ltd                                                                none     00:00:51  11:25:40  y
>
> When  doing, from server1:   "doveadm sync -u user1 at domain.ltd remote:server2.domain.ltd"
>
> doveadm(user1 at domain.ltd): Error: userdb lookup: connect(/var/run/dovecot/auth-userdb) failed: Connection refused
> doveadm(user1 at domain.ltd): Fatal: /var/run/dovecot/auth-userdb: passdb lookup failed (to see if user is proxied, because doveadm_port is set)
> dsync-local(user1 at domain.ltd): Error: read(server2.domain.ltd) failed: EOF (version not received)
>
> Thx for your help.
>
>