Discovery should monitor the Weave container

[inercia]

When using the local Weave router, Discovery should listen for events on the weave container. If the container disappears, it should remove the router's IP from the discovery backend.

[inercia]

We could implement this in two different ways:

• listening for Docker events (this would probably require some privileges)
• we must periodically refresh the registration in the backend, so we could do a GET /status from the router we are advertising before the refresh. Tthis would also work for remote routers...

Any sugestion on how to tackle this @rade?

What should we do if the router is dead? Discovery should probably exit...

[rade]

Any sugestion on how to tackle this

Depends on how promptly you want the removal to happen. With events it will happen very quickly. But if you don't care then a 'healthcheck' is fine and, as you say, is more flexible.