Consul organization and keys

[hntd187]

So using consul's kv store we can do more in terms of orchestration than just leader election (if we even want to go that route)

but basically
/service/toshi/leader true

whichever node gets the session lock on this is the leader then nodes can join the cluster and announce their address perhaps via something like

/service/toshi/cluster/tn1 hostname:port
/service/toshi/cluster/tn2 hostname:port

So on so forth, I don't have any particular attachment to this method, but just something to get started with.

[fhaynes]

Off the top of my head:

• IP
• Hostname
• Current CPU load (5 min avg or something)
• Free desk space
• iowait
• Node role if we use roles
• Free RAM