Member Client URLs Advertisement Behavior

[jabellard]

Per the operations guide, each member of a cluster should advertise its own cluster-accessible client URLs. However, from some testing, I noticed that having each member of the cluster advertise not only its own client URLs, but also the client URLs of all the other members of the cluster works just fine.

Given that this is not the recommended setup per the operations guide, I wonder if this type of configuration could potentially open up the door to insidious, undefined behavior and should be avoided.

I'm not an etcd expert, so I'm asking these questions out of curiosity for my own learning.

[jabellard]

@jmhbnz , @ahrtr , @serathius : I'd love to hear your thoughts on this.