On Tue, 7 Sep 2010, Atom Powers wrote: > How do you make DNS highly available (or load balance it)? > Most clients use the first server on the list and if it doesn't answer > then it tries the next etc. But the time-out makes some operating > systems (Windows) very sad.
First, by not using windows :) Second, we experimented with the timeouts, and did the best we could. Certain services recovered much faster, IIRC, like SSH. That was the biggest issue we had when we did have a power problem, and had to bring everything up from scratch. No DNS meant SSH was taking minutes to connect. It's not perfect. I've since moved on to another job, but we had planned to try using the load balancers to load balance DNS internally. Yes, that adds a dependency on the LB's, but without those, we had no external connection to the world, and no way to serve traffic. They also come back reasonably quickly from power issues. Matthew _______________________________________________ Tech mailing list Tech@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
