On Thu, Jun 5, 2014 at 7:32 PM, Nate Finch <nate.fi...@canonical.com> wrote:
> I guess what I don't understand is, why does it matter which mongo DB you > back up? They should all be identical, right? > Replication lag is a real thing, and shouldn't be discounted. We want to be sure that the backup corresponds to a point in time no earlier than the user issued the backup command, and I think the right way to do that is `mongodump --oplog` on the primary; which, conveniently, doesn't involve taking the db down. Cheers William
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