[CentOS] [OT]multi-master DNS

Wed Jun 28 16:47:19 UTC 2017
Tris Hoar <trishoar at bgfl.org>

On 27/06/2017 00:49, James A. Peltier wrote:
> Bind does not have a method to do multi-master replication.  All updates must be done via an intermediary service (database).
> In our case, we've used containers and Consul for providing a highly available DNS service.  A container will fire up and race for the master lock.  It will dump the contents of the database into its named configurations and assuming it has the lock will assume the IP address of the master.  Others just come up as slaves.
> If the master lock is not renewed after a given period of time another container can acquire the lock and become master by assuming the IP address of master (VRRP/VRID/KeepAliveD)

Hi James,

Do you have any more info on this setup? I'm in the middle of looking at 
changing our DNS service and was thinking of containerising them for the 
improved deployment flexibility it offers.


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