3 ms·

mDNS is an interesting choice for service discovery. Neat idea for local development, but probably not great in production. I believe most cloud providers don'

mDNS is an interesting choice for service discovery. Neat idea for local development, but probably not great in production. I believe most cloud providers don't support multicast, meaning mDNS would not work there. It's also quite slow and/or very chatty in large networks. Looks there is support for other service discovery mechanisms via plugins, though.

tyingq 7y ago
Oh, yeah...that is probably limiting. A quick scan seems to show Digital Ocean specifically drops multicast, and AWS/GCP/Azure have varying levels of "unsupported". Would it work with Flannel/Calico, etc? Inefficient, but probably okay since it would be just service resolution. Edit: Looks like no for Calico, Yes for recent Flannel, but Weave Works is probably a better choice, designed to support it from the start.
- alphakilo 7y ago
  mDNS is only for local development. You can use a variety of tools such as Consul. Check out micro.mu for more info :)
  - tyingq 7y ago
    Ahh. Might be a good update for the linked page.
e12e 7y ago
Ah, multicast such a great idea, and so hard to use at scale. For wiw multicast/mDNS works fine on top of ZeroTier. Although, if the underlying network doesn't, I assume you get a lot of overhead (ie: it probably wouldn't be very beneficial to try and share a video stream via multicast on top of ZeroTier on top of a network without multicast support).
bketelsen 7y ago
mDNS is intented for local development, not production usage. It simply enables one to develop without installing a more production-worthy solution like Consul.