[Discuss] Mirroring of files to all nodes in a cluster

[betsys at gmail.com (Betsy Schwartz)]

Do you need read-write replication across all nodes?

AndrewFS will do read-only replication, although I haven't looked at
the details.

For read-write you might look at something like owncloud.

(I assume you've ruled out just using NFS...?)


On Tue, Nov 21, 2017 at 2:20 PM, David Rosenstrauch <darose at darose.net> wrote:
> I'm looking for a Linux utility that will allow me to mirror/replicate a
> directory tree onto each and every node in a cluster, so that the data will
> reside on the local disk on each machine.  However, I'm not seeing anything
> that quite fits that bill.  So far I've found:
>
> * DRBD
> * Gluster FS
>
> However, each one doesn't seem to achieve what I want in some key way:
>
> * DRBD seems to only really work for 2-node master/slave replica type
> setups.  However I'm going to have a master and multiple slaves (at least 3
> right now, and almost certainly more in the future).  It doesn't sound like
> DRBD supports that.
>
> * Gluster seems to be a distributed file system.  I.e., the data gets
> sharded and spread across the multiple nodes in the cluster.  However, this
> would mean that there is not a complete local copy on each node.
>
> Anyone have a recommendation for tool that will achieve what I want?
> Obviously homegrown rsync scripts running on each node would be an option
> here, but I was hoping to not have to roll my own solution for this.  Also,
> of course, if I'm mistaken about either DRBD or Gluster's capabilities,
> please feel free to correct.
>
> Thanks,
>
> DR
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