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etcd/CHANGELOG-3.1.md

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v3.1.13 (2018-03-29)

See code changes and v3.1 upgrade guide for any breaking changes.

Improved

  • Adjust election timeout on server restart to reduce disruptive rejoining servers.
    • Previously, etcd fast-forwards election ticks on server start, with only one tick left for leader election. This is to speed up start phase, without having to wait until all election ticks elapse. Advancing election ticks is useful for cross datacenter deployments with larger election timeouts. However, it was affecting cluster availability if the last tick elapses before leader contacts the restarted node.
    • Now, when etcd restarts, it adjusts election ticks with more than one tick left, thus more time for leader to prevent disruptive restart.

Metrics, Monitoring

Go

v3.1.12 (2018-03-08)

See code changes and v3.1 upgrade guide for any breaking changes.

Fixed: v3

Go

v3.1.11 (2017-11-28)

See code changes and v3.1 upgrade guide for any breaking changes.

Fixed: v3

  • #8411,#8806 backport "mvcc: sending events after restore"
  • #8009,#8902 backport coreos/bbolt v1.3.1-coreos.5

Go

v3.1.10 (2017-07-14)

See code changes and v3.1 upgrade guide for any breaking changes.

Added

  • Tag docker images with minor versions.
    • e.g. docker pull quay.io/coreos/etcd:v3.1 to fetch latest v3.1 versions.

Go

  • Compile with Go 1.8.3.
    • Fix panic on net/http.CloseNotify

v3.1.9 (2017-06-09)

See code changes and v3.1 upgrade guide for any breaking changes.

Fixed

  • Allow v2 snapshot over 512MB.

Go

v3.1.8 (2017-05-19)

See code changes and v3.1 upgrade guide for any breaking changes.

Go

v3.1.7 (2017-04-28)

See code changes and v3.1 upgrade guide for any breaking changes.

Go

v3.1.6 (2017-04-19)

See code changes and v3.1 upgrade guide for any breaking changes.

Other

  • Remove auth check in Status API.

Fixed

  • Fill in Auth API response header.

Go

v3.1.5 (2017-03-27)

See code changes and v3.1 upgrade guide for any breaking changes.

Added

  • Add /etc/nsswitch.conf file to alpine-based Docker image.

Fixed

  • Fix raft memory leak issue.
  • Fix Windows file path issues.

Go

v3.1.4 (2017-03-22)

See code changes and v3.1 upgrade guide for any breaking changes.

Go

v3.1.3 (2017-03-10)

See code changes and v3.1 upgrade guide for any breaking changes.

Fixed

  • Fix etcd gateway schema handling in DNS discovery.
  • Fix sd_notify behaviors in gateway, grpc-proxy.

Other

  • Use machine default host when advertise URLs are default values(localhost:2379,2380) AND if listen URL is 0.0.0.0.

Go

v3.1.2 (2017-02-24)

See code changes and v3.1 upgrade guide for any breaking changes.

Fixed

  • Fix etcd gateway with multiple endpoints.

Other

  • Use IPv4 default host, by default (when IPv4 and IPv6 are available).

Go

v3.1.1 (2017-02-17)

See code changes and v3.1 upgrade guide for any breaking changes.

Go

v3.1.0 (2017-01-20)

See code changes and v3.1 upgrade guide for any breaking changes.

Improved

  • Faster linearizable reads (implements Raft read-index).
  • v3 authentication API is now stable.

Breaking Changes

  • Deprecated following gRPC metrics in favor of go-grpc-prometheus.
    • etcd_grpc_requests_total
    • etcd_grpc_requests_failed_total
    • etcd_grpc_active_streams
    • etcd_grpc_unary_requests_duration_seconds

Dependency

Security, Authentication

See security doc for more details.

  • SRV records (e.g., infra1.example.com) must match the discovery domain (i.e., example.com) if no custom certificate authority is given.
    • TLSConfig.ServerName is ignored with user-provided certificates for backwards compatibility; to be deprecated.
    • For example, etcd --discovery-srv=example.com will only authenticate peers/clients when the provided certs have root domain example.com as an entry in Subject Alternative Name (SAN) field.

Added

  • Automatic leadership transfer when leader steps down.
  • etcd flags
    • --strict-reconfig-check flag is set by default.
    • Add --log-output flag.
    • Add --metrics flag.
  • v3 client
    • Add SetEndpoints method; update endpoints at runtime.
    • Add Sync method; auto-update endpoints at runtime.
    • Add Lease TimeToLive API; fetch lease information.
    • replace Config.Logger field with global logger.
    • Get API responses are sorted in ascending order by default.
  • v3 etcdctl
    • Add lease timetolive command.
    • Add --print-value-only flag to get command.
    • Add --dest-prefix flag to make-mirror command.
    • get command responses are sorted in ascending order by default.
  • recipes now conform to sessions defined in clientv3/concurrency.
  • ACI has symlinks to /usr/local/bin/etcd*.
  • Experimental gRPC proxy feature.

Other

  • etcd uses default route IP if advertise URL is not given.
  • Cluster rejects removing members if quorum will be lost.
  • Discovery now has upper limit for waiting on retries.
  • Warn on binding listeners through domain names; to be deprecated.
  • v3.0 and v3.1 with --auto-compaction-retention=10 run periodic compaction on v3 key-value store for every 10-hour.
    • Compactor only supports periodic compaction.
    • Compactor records latest revisions every 5-minute, until it reaches the first compaction period (e.g. 10-hour).
    • In order to retain key-value history of last compaction period, it uses the last revision that was fetched before compaction period, from the revision records that were collected every 5-minute.
    • When --auto-compaction-retention=10, compactor uses revision 100 for compact revision where revision 100 is the latest revision fetched from 10 hours ago.
    • If compaction succeeds or requested revision has already been compacted, it resets period timer and starts over with new historical revision records (e.g. restart revision collect and compact for the next 10-hour period).
    • If compaction fails, it retries in 5 minutes.

Go