Carl Wilhelm Soderstrom wrote:
> On 08/25 10:16 , Osburn, Michael wrote:
>> I have a pair of backup servers that are backing up the same site. We
>> are doing this so that in the event the backuppc server dies, we can
>> easily restore it from the other one. It used to be an easy task to keep
>> them in sync when we had only a few hosts (30-40) being backed up but
>> now that we are moving to roll this out globally the numbers will be
>> rather high and difficult to maintain. Is there a process out there that
>> will allow me to set up one server as a main server and have the others
>> copy the changes over?
> 
> Short answer:
> No.
> 
> Long answer:
> this has been hashed over many times on this mailing list (and yes, the
> sourceforge search mechanism is useless). basically; the number of hardlinks
> kills rsync because of memory consumption; the only way to do it sanely is
> somewhere around the hardware or filesystem level. Basically you need to
> have the hardware or the filesystem replicate your data for you.
> 
> The best way to do this is to set up your offsite backup server to back up
> your machines completely independently. This sucks a lot of bandwidth; but
> on the other hand does provide a fully redundant system, so even if your
> onsite backup server goes down your offsite server will keep going.
> 
> Perhaps a future version of BackupPC will support offsite replication as
> part of its mechanisms.

You probably could play some tricks with replicating the configs if your 
concern is maintaining changes on the independent servers.  They are 
just ordinary files.

-- 
   Les Mikesell
    lesmikesell AT gmail DOT com

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