[robszumski]

The functionality to handle this is mentioned in the blog post: "standby" peer mode.

"Our upcoming release, etcd 0.4, adds a new feature, standby mode. It is an important first step in allowing etcd clusters to grow beyond just the peers that participate in consensus."

[stormbrew]

Fair enough, it just sounded like the GP was describing something inherent rather than something new, and it didn't mesh with my understanding of how etcd worked to date.