Richard,
I'd recommend creating a DNS zone in Scalr and pointing it to the farm.
This will create all system records for roles, except the root record ('@').
Then create a static IN A record pointing to the current infrastructure.
Once you're ready for a switch, point DNS zone to the specific role on the
farm, this will complement zone with root records pointing to servers of
this role.
Then you'll need to delete static IN A record pointing to the old
infrastructure.
Regards,
Nick
On Tue, Dec 18, 2012 at 1:47 PM, RichBos <[email protected]> wrote:
> Hi all,
>
> Got a quick DNS config scenario to check with the community.
>
> I've got a client with multiple domains/sub domains we are migrating from
> a single fixed VPS to x2 Scalr managed farms across app/mysql roles, we've
> created all the app/domains/sub-domains & vhosts and am planning to
> pre-load the DNS in Scalr 'as is' (i.e pointing back at the existing
> servers) and then swap things to the Scalr farms when we're ready to go
> live.
>
> My question is just this, obviously the A records in corresponding
> app/domain/sub domain entries will point back to the existing servers (pre
> change over) but in order for this to function correctly I'm presuming I
> leave blank entries for app (instance/role) allocation (until we swap over
> to Scalr managed).
>
> Apologies if this seems like an obvious question, sometimes it's just
> better to ask though....!
>
> Richard.
>
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