Hey, Thanks a lot for your crisp and short answer!!
On Wed, May 23, 2018 at 6:31 PM, Matthew Pounsett <m...@conundrum.com> wrote: > > > On 23 May 2018 at 07:37, Blason R <blaso...@gmail.com> wrote: > >> Hi Guys, >> >> Can we define masters as hostname instead of IP address? I guess its not >> possible but wondering if community can shed come light on this? >> >> > The short answer.. no, you can't do that. The definition for the slave > zone statement's 'masters' option (BIND 9.11 ARM pp 139) is pretty clear > that you can only use IP addresses and named masters lists. You could fake > it by defining a named master list (pp. 70) but I suspect that isn't going > to do what you want. > > I think the rationale for not allowing hostnames there is that you can > easily put yourself in a unresolvable (pardon the pun) situation where your > slave can't reach the master until your slave reaches the master and gets a > copy of a key zone. I can also see the potential for complication even if > there weren't a catch-22 in the configuration, such as what to do if the > hostname referenced has multiple addresses associated with it; that would > have implications for things like how complex it is to track whether a > master is available or not. I'm sure there are other complexities I > haven't thought of. > > > > >
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