On 08/07/09 15:46, Alans wrote:
Hi,
Can someone tell me how webhosting providers or ISPs do maintenance on
their DNSs?
I mean, can they take it offline? What is the procedure usually?
Hi
You can use a load balancer in front of your DNS servers, and remove the
host from the pool when maintenance is needed.
Another approach is to run your servers as virtual machines. With a
platform like VMware you can move the guest from host to host without
disruption using vmotion, which allows maintenance to be performed on
the host. However, this will not help if you need to do a software or
kernel upgrade on the guest.
Regards,
Chris Hills
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