Hi: Support etcd v3 is on the way, here is the PR [1], it'll be merged soon.
I think we can support etcd v3 ONLY. The users can follow doc [2], migrate application data from `v2` to `v3`. Since the v3 and v2 versions of etcd are quite different, I think we can use `2.0` version, changing the major version makes it easier for users to pay attention to the difference. [1] https://github.com/apache/apisix/pull/2036 [2] https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/v2-migration.md -- *MembPhis* My GitHub: https://github.com/membphis Apache APISIX: https://github.com/apache/incubator-apisix
