Module discovery 

Functions

found_everyone

Block until full_size nodes have been found.

found_majority

Block until a majority of nodes have been found. Usefull when implementing vote based consensus such as Raft.

maintain

This drives the chart discovery. You can drop the future but then the chart will no longer be updated.

sniff

This listens only, mapping the cluster without announcing itself. Usefull for clients on the same subnet trying to find nodes to contact. You can drop the future but then the chart will no longer be updated.