v3.4 [1]¶

v3.4.14 (2020-11-25)¶

Package clientv3:

Fix auth token invalid after watch reconnects.
    https://github.com/etcd-io/etcd/pull/12264
Get AuthToken automatically when clientConn is ready.

Go:

Compile with Go 1.12.17.

v3.4.0 (2019-08-30)¶

Improved:

Add Raft learner: etcd#10725, etcd#10727, etcd#10730.
Rewrite client balancer with new gRPC balancer interface.
Add backoff on watch retries on transient errors.
...

Breaking Changes:

Rewrite client balancer with new gRPC balancer interface.
Migrate dependency management tool from glide to Go module.
Make etcd --enable-v2=false default.
Make embed.DefaultEnableV2 false default.

Security, Authentication:

Support TLS cipher suite whitelisting.
Add etcd --host-whitelist flag, etcdserver.Config.HostWhitelist,
    and embed.Config.HostWhitelist, to prevent "DNS Rebinding" attack.
    https://en.wikipedia.org/wiki/DNS_rebinding
Support etcd --cors in v3 HTTP requests (gRPC gateway).
Support ttl field for etcd Authentication JWT token.
Allow empty token provider in etcdserver.ServerConfig.AuthToken.
Fix TLS reload when certificate SAN field only includes IP addresses but no domain names.

Package embed:

Add embed.Config.CipherSuites to specify a list of supported cipher suites for TLS handshake
Add embed.Config.InitialElectionTickAdvance to enable/disable initial election tick fast-forward.
Define embed.CompactorModePeriodic for compactor.ModePeriodic.

Package pkg/adt:

Change pkg/adt.IntervalTree from struct to interface.

Package raft:

Fix deadlock during PreVote migration process.
Add raft.ErrProposalDropped.
Improve Raft becomeLeader and stepLeader by keeping track of latest pb.EntryConfChange index.

Go:

Require Go 1.12+.
Compile with Go 1.12.9 including Go 1.12.8 security fixes.