1. Read Makefile

2. Run make

    ➜ make
    Attempting to start etcd on a (192.168.99.100)
    Attempting to start etcd on b (192.168.99.101)
    Attempting to start etcd on c (192.168.99.102)
    touch etcd-up
   
    ➜ etcdctl -version
    etcdctl version: 3.0.6
    API version: 2
   
    ➜ etcdctl --endpoints http://192.168.99.100:2379 cluster-health
    member c3bc806a49e1dd1 is healthy: got healthy result from http://192.168.99.102:2379
    member 8a3fa191d5488446 is healthy: got healthy result from http://192.168.99.101:2379
    member e1eeec531d5d33fa is healthy: got healthy result from http://192.168.99.100:2379
   

[X] ✓ Node restart [X] ✕ Node comes back with same name but otherwise different [ ] Same node goes away and comes back without data [ ] Node goes down hard and is replaced (different IP, no data)

• Once a member is removed, it is permanent. The node must be wiped of data and join as a new member
• Also, after removal, HTTP DELETE on token/node-id at discovery service
• A node cannot rejoin via discovery with the same name