The backup scenarios described below seem to be the main ones that affect me
directly (apart from the obvious ones like changing firewalls, DNS records,
SSH logins etc) It seems to me that the obvious answer seems to be you
should make changes first
Keith
On 29 October 2011 10:43, Andy Smith <andy(a)bitfolk.com> wrote:
Hello,
We're now very close to the point when we need to begin getting you
all to renumber your IP addresses. We are not there yet, but here is
some more info:
https://tools.bitfolk.com/wiki/Renumbering_out_of_212.13.194.0/23
Before finalising the procedure and sending out instructions I could
use some feedback from you on a couple of points. These involve
situations where BitFolk is contacting you by IP address.
- BitFolk Backups
Our backup servers are doing rsync-over-SSH by IP address.
If we change the IP addresses our side then your backups stop
working until you make your change.
If we don't change the IP addresses our side then your backups
will break when you make your change, and then you would need to
contact support to get the change done.
Which would be preferred?
- Nagios checks
Many of you have Nagios checks. These are done by IP address.
If we immediately make the change on our side then alerts will
start to fire for you, and will not right themselves until you
complete the IP address change on your side.
If we don't make the change on our side then as soon as you make
your change, alerts will start to fire and then you'd have to
contact support to ask for the monitoring to be fixed.
I have a strong preference for us making the change as soon as you
have the info to make the change your side, so that the monitoring
fixes itself as you do the work.
Any other ideas how to do it?
- Old rsync-style zone transfers
Some of you still have DNS secondary services driven by zone files
that we are rsyncing from you. This is happening by IP address.
This service was deprecated years ago, since everyone got enough
RAM to run a proper DNS server for this purpose.
I would like to finally retire this service. How much time would
people like to stop relying on it and switch to running a real DNS
server?
- DNS slaves
Those of you who have secondary DNS services will be running your
own DNS server on your VPS and we'll be doing AXFR to that IP
address.
The DNS secondary service comes with Nagios monitoring, so as soon
as we switch the IP configured on our side then monitoring as
mentioned above will begin to alert.
There can be multiple masters, so what we could do is set both old
and new IP addresses so that zone transfers can continue to take
place, but our monitoring can only have one IP address.
With that in mind I think I would prefer to set both old and new
IPs as masters, let monitoring alert for your TCP/53 and that will
fix itself as your sort out your new IP address.
Any other ideas how to do it?
As far as possible in all cases above I would like to avoid the
situation where we have to chase individual customers one-on-one
about things that suddenly stopped working.
I can imagine this might not be avoidable--particularly in the case
of the backups--so if we have to do it, we have to do it.
Cheers,
Andy
--
http://bitfolk.com/ -- No-nonsense VPS hosting
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Keith Williams
If the only tool you have is a hammer, you tend to see every problem as a
nail.
- Abraham Maslow
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