Service Discovery in BOSH releases

some [service discovery thoughts](Service Discovery in BOSH Background) from Chris Brown and Matthew Kocher as it relates to BOSH releases

Let's put some Service Discovery use cases here
Eg. what MicroBOSH uses DNS for today and the format of the DNS entries
what other non-BOSH use cases may be such as service discovery, the RabbitMQ team had some of these
Chris Brown provides a MemCache example in a multi-release environment in his analysis as a thought experiment

Discussion of tradeoffs for working on this now in terms of benefits, complexity, distraction, urgency

Status quo: run a single node PowerDNS as part of BOSH that is subject to downtime when using MicroBOSH
Use an extremely distributed DNS solution with a DNS server on each node Designate
Use a basic HA DNS solution with centralized remote full DNS servers ** perhaps backed by an HA DB for PowerDNS
Use a basic HA DNS solution with centralized remote DNS servers, but limit DNS to SRV records SkyDNS
Also proxy TCP through a gorouter tier and use it's routing table as basic lookup
something else

Oct 2013 discussion on whether to use MicroBOSH DNS for other non-BOSH DNS entries

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