Only use one DNS server?
On Tue, Dec 10, 2013 at 10:06 PM, Grant Shipley <[email protected]> wrote: > Yeah, I hear ya on the hosts file. The problem is my application > dynamically creates cname records for every application that is deployed. > Before the application is marked as created, the localhost has to be able > to resolve it. I can't add it to my /etc/hosts file fast enough. > > > > > On Tue, Dec 10, 2013 at 10:03 PM, S. Dale Morrey <[email protected] > >wrote: > > > Ok I might be a total noob with OS/X & BSD in general, but wouldn't a > hosts > > file override anything in DNS? > > > > > > > > On Tue, Dec 10, 2013 at 9:00 PM, Grant Shipley <[email protected]> > wrote: > > > > > I know this is a linux list but I am at the end of my rope on this one. > > I > > > can't for the life of me figure out how dns resolution works in OSX > > > Mavericks 10.9. > > > > > > Scenario: > > > > > > I have a PaaS setup in a test environment on openstack and I used the > > > domain name of example.com for my domain. This is fine as I setup a > > bind > > > dns server to resolve all of those hosts for me. On windows and linux > > its > > > as easy as adding the dns server I created to the top of the list in > > > /etc/resolv.conf. > > > > > > Enter OSX. > > > > > > First of all, /etc/resolv.conf isn't respected on the mac so you have > to > > > add manual entries of dns server in the network gui. I did this but it > > > still doesn't work. dig returns the right info and pulls it from my > dns > > > server. ping returns different results. I start to pull my hair out. > > > > > > So then I google for about 19 straight hours and find that DNS on OSX > > uses > > > mDNSResponder. And I then found this little nugget: > > > > > > https://discussions.apple.com/message/10546115#10546115 > > > > > > " > > > 2) mDNSResponder does not honor DNS server ordering > > > > > > While not explicitly documented, in Mac OS X versions earlier than Snow > > > Leopard, DNS servers, whether specified manually or via DHCP, were > > queried > > > in the order they were provided. For manual specification, this means > in > > > the order shown in the appropriate Network preferences pane tab, and > for > > > DHCP users in the order specified by the DHCP server. > > > > > > This is no longer true in Mac OS X Snow Leopard; instead mDNSResponder > > now > > > seems to occasionally change the order in which it queries DNS servers > > from > > > that in which they were specified. > > > " > > > > > > Great. Thanks for not respecting the order Apple. I enjoy putting my > > dns > > > servers on a dart board and seeing which one I hit. > > > > > > So then I find another little nugget that says you can override this > by: > > > > > > sudo /usr/libexec/PlistBuddy -c "Add :StrictUnicastOrdering bool true" > > > /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist > > > > > > > > > Yeah, well that doesn't work either. > > > > > > So anyone know how to enforce dns ordering on OSX? > > > > > > And before you suggest I don't use OSX, I don't have a choice for this > > > particular job. > > > > > > Any help is appreciated. > > > > > > -- > > > gs > > > > > > /* > > > PLUG: http://plug.org, #utah on irc.freenode.net > > > Unsubscribe: http://plug.org/mailman/options/plug > > > Don't fear the penguin. > > > */ > > > > > > > /* > > PLUG: http://plug.org, #utah on irc.freenode.net > > Unsubscribe: http://plug.org/mailman/options/plug > > Don't fear the penguin. > > */ > > > > /* > PLUG: http://plug.org, #utah on irc.freenode.net > Unsubscribe: http://plug.org/mailman/options/plug > Don't fear the penguin. > */ > /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
