Re: [cobalt-users] New IP Block - what the best way to add these

[Greg Hewitt-Long <cobaltusers@xxxxxxxxxxxxxxxxxxx>]

>Hi Yah,
>
>Been a while since I posted here :)
>
>Got an email from my provider yesterday that they are tidying up on IP blocks and that they have now reassigned a block of new IP numbers to our server (sigh) and we have to change over within a given time frame. I've been searching most of the day to see what the best way to go about adding these and changing over customers sites/DNS records without having any downtime.
>
>Spoke with my provider and they suggest that I do the following:-
>
>RAQ3 with ns & ns2 name servers on the same server ?(was already set-up like this when I got the machine)
>
>1. Change IP address of one of the main DNS servers IP's to the new IP
>2. Ensure there is a virtual site created or changed so the IP binds via the GUI
>3. Then with one of the DNS servers using a new IP and a old IP begin to make changes to customers DNS Records and site configs
>4. When sites procreate and start using new IP's then change the remaining Name servers IP to the new IP allocated.
>
>All seems straight forward enough but has anyone else got a better way or a fool-proof way so that there is no downtime?


Impossible - if they change the IPs on you, and you disable the old IPs and replace with new ones, your customers/sites *WILL* experience downtime.

You need to tell your provider that this "change" is TOTALLY unacceptable.
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