etcd/CHANGELOG-4.0.md

Breaking change wishlists.

v4.0.0 (TBD)

See code changes and v4.0 upgrade guide for any breaking changes.

Breaking Changes

• Secure etcd by default.
• Change /health endpoint output.
  • Previously, {"health":"true"}.
  • Now, {"health":true}.
  • Breaks Kubernetes kubectl get componentstatuses command.
• Deprecate etcd --proxy* flags; no more v2 proxy.
• Deprecate v2 storage backend; no more v2 store.
  • v2 API is still supported via v2 emulation.
• Deprecate etcdctl backup command.
• clientv3.Client.KeepAlive(ctx context.Context, id LeaseID) (<-chan *LeaseKeepAliveResponse, error) is now clientv4.Client.KeepAlive(ctx context.Context, id LeaseID) <-chan *LeaseKeepAliveResponse.
  • Similar to Watch, KeepAlive does not return errors.
  • If there's an unknown server error, kill all open channels and create a new stream on the next KeepAlive call.
• Rename github.com/coreos/client to github.com/coreos/clientv2.