[Samba] Bidirectional Rsync/Unison based SysVol replication workaround

[Elias Pereira]

Hello Robert,

Nice case!!! I managed to set up rsync/unison and at first it is working
correctly. I configured only in DC with the PDC emulator.

On Fri, Feb 5, 2021 at 9:50 AM Robert Wooden <wdn2420systm at gmail.com> wrote:

> With my Samba setup, when I find something that is simple and works I tend
> to stay the course. I have been using the "
> https://wiki.samba.org/index.php/Bidirectional_Rsync/osync_based_SysVol_replication_workaround"
> for years. Back then I liked that Rsync/Osync handled backing up and
> restoring of file acl's. I could be wrong but (too many years since I set
> Osync up) I think Osync handled acl's with default settings but, again it's
> been a long time.
> Not that Rsync/Osync is anything better or worse than the Rsync/Unison
> method. Running Rsync/Osync on your first DC replicates both ways. The only
> possible problem I thought of is what if the DC running Osync "goes down"
> for any reason, replication will halt.
> I solved this by setting up Osync on both DC's (I have a two DC system)
> and set the crontab times to alternate between DC's. The first DC cron tabs
> at 6, 18, 30, 42, and 54 minutes and the second crontab is 12, 24, 36, 48,
> and 59.8 minutes.
> My DC's can forward system (root) emails in the event of any failures.
> Once in a while i will receive an email that one of the syncs did not
> process correctly. A few minutes later the other DC syncs and all must be
> fine as I do not get any more emails except that single (first) email
> notice.
> I started using this method before the Rsync/Unison method was refined to
> be a good as it is today but, in my case Osync is working and I have not
> had any sync failures over the many years I have been using Osync. I have
> been using this method since 2013.
> My two cents, do as you wish.
>
> On Wed, Feb 3, 2021 at 11:58 AM Elias Pereira via samba <
> samba at lists.samba.org> wrote:
>
>> Hello,
>>
>> Nowadays I have one-way rsync (DC3 -> DC4), but I studying the two-way
>> rsync between my 2 DCs.
>>
>> About
>>
>> https://wiki.samba.org/index.php/Bidirectional_Rsync/Unison_based_SysVol_replication_workaround
>>
>> The configs of unison are made only on DC3?
>>
>> --
>> Elias Pereira
>> --
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>

-- 
Elias Pereira