Re: troubleshooting replication setup - 2.4.17

On 17/09/2021 3:30 pm, Simon Matter wrote:
>> On 16/09/2021 7:35 pm, Simon Matter wrote:
>>>> Working on this upgrade to a new server - 2.4 to 3.4.2
>>>>
>>>> on the old server, running 2.4.17 (I know ...)
>>>>
>>>> Using this howto :
>>>> https://www.cyrusimap.org/2.5/imap/admin/sop/replication.html
>>>>
>>>> (2.5, I know ... but I can't find doco for how to do this on 2.4)
>>>>
>>>> I've added to /etc/services :
>>>>
>>>> csync           9905/tcp                # Cyrus csync temp CB
>>>>
>>>> 9905 is available and doesn't clash with anything I can find :
>>>>
>>>> bash-4.3# netstat -an | grep 9905
>>>> bash-4.3#
>>>>
>>>>
>>>> in imapd.conf :
>>>>
>>>> # sync server, CB 20210916
>>>> sync_authname: XXXXX
>>>> sync_password: XxXXxxX
>>>> sync_port: 9905
>>>>
>>>> in cyrus.conf :
>>>>
>>>> SERVICES {
>>>>      # add or remove based on preferences
>>>>      imap          cmd="imapd" listen="localhost:imap" prefork=0
>>>>      imaps         cmd="imapd -s" listen="imaps" prefork=0
>>>>      pop3          cmd="pop3d" listen="pop3" prefork=0
>>>>      pop3s         cmd="pop3d -s" listen="pop3s" prefork=0
>>>>      #sieve                cmd="timsieved" listen="sieve" prefork=0
>>>>
>>>>
>>>>      lmtpunix      cmd="lmtpd" listen="/var/imap/socket/lmtp" prefork=0
>>>>
>>>>      # for syncing to rollcage13 for migration CB 20210916
>>>>      syncserver    cmd="/usr/pkg/cyrus/bin/sync_server" listen="csync"
>>>> }
>>>>
>>>> Error logged is :
>>>>
>>>> Sep 16 18:42:52  master[5508]: servname not supported for ai_socktype,
>>>> disabling syncserver
>>>>
>>>> Um?
>>>>
>>>> Am I totally flogging a dead horse or might this work?
>>> Again, I have never used this, but, do you have 'csync' defined in
>>> /etc/services?
>> I sure do, as above :
>>
>> bash-4.3# grep ^csync /etc/services
>> csync           9905/tcp                # Cyrus csync temp CB
> Hm, I know I've read about the entry but forgot later, do I have to worry :)
>
> Anyway, two more things to check
> 1) are permissions on /etc/services fine?

yes


> 2) can you add an entry for UDP as well and try?


I can, but I think I may have things around backwards anyway. I'm trying 
to start sync_server on the machine that I'm trying to migrate away 
from, which would be the 'master'.  But the man page for sync_server says :

DESCRIPTION
        Sync_server  is the server side of the the replication system.  
It runs
        on the  target  (replica)  system  and  listens  for 
connections  from
        sync_client  which  provides instructions for synchronizing the 
replica
        system with the master system.


That, seems to me to be backwards, and I should be trying to run 
sync_client on the master?

The man page for sync_client says :

DESCRIPTION
        Sync_client is the client side of the replication system. It  
runs  on
        the  client (master) system and connects to the target (replica) 
system
        and generates an appropriate sequence of  transactions  to 
synchronize
        the replica system with the master system.

The client is the master? The target is the replica is the server?

Erm?!

The cyrus doco for how to set this up, is not clear on what goes where - 
I suspect it's written by the people that wrote or maintain cyrus, and 
it leaves a lot out - or expects you to have read the entire doco set 
and some of the source code, to get this working!




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