Change my primary DNS server safely...

Robert Spangler mlists at
Fri Feb 27 16:14:48 UTC 2009

On Friday 27 February 2009 10:08, Denny Jodeit wrote:

>  It's not exactly 'proper' practice, but I have successfully turned down
> the caching time to 300 seconds. Do this a week ahead of your planned
> server move.

I would not suggest turning down the TTL's a week ahead of time.  This will 
only increase traffic and really isn't necessary.  Besides what do you gain 
from it?

Proper planning is the key here.  It is as simple as 1,2,3.

1. Setup your new Master server and start it

2. Make the old Master a slave to the new master (so any updates are not 
missed) and changer the slaves to point to the new master.

3. Make your changes at your register to point to the new server

Most register say it can take up to 72 hours for the changes to propagate.  
Make sure you have query logging turned ON on the old master.  After a few 
days, maybe sooner, you will see that there are no more queries coming to the 
server and it will be safe to shut it down.  At this point everyone should be 
pointing to the new master.



Linux User #296285

More information about the bind-users mailing list