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When performing the downgrade operation, users can confirm whether each member is ready to be downgraded using the field 'storageVersion'. If it's equal to the 'target version' in the downgrade command, then it's ready to be downgraded; otherwise, the etcd member is still in progress of processing the db file.
76 lines
4.0 KiB
Markdown
76 lines
4.0 KiB
Markdown
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Previous change logs can be found at [CHANGELOG-3.5](https://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.5.md).
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<hr>
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## v3.6.0 (TBD)
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See [code changes](https://github.com/etcd-io/etcd/compare/v3.5.0...v3.6.0).
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### Breaking Changes
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- `etcd` will no longer start on data dir created by newer versions (for example etcd v3.6 will not run on v3.7+ data dir). To downgrade data dir please check out `etcdutl migrate` command.
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- `etcd` doesn't support serving client requests on the peer listen endpoints (--listen-peer-urls). See [pull/13565](https://github.com/etcd-io/etcd/pull/13565).
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### Deprecations
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- Deprecated [V2 discovery](https://etcd.io/docs/v3.5/dev-internal/discovery_protocol/).
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### etcdctl v3
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- Add command to generate [shell completion](https://github.com/etcd-io/etcd/pull/13133).
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- When print endpoint status, [show db size in use](https://github.com/etcd-io/etcd/pull/13639)
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- [Always print the raft_term in decimal](https://github.com/etcd-io/etcd/pull/13711) when displaying member list in json.
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- [Add one more field `storageVersion`](https://github.com/etcd-io/etcd/pull/13773) into the response of command `etcdctl endpoint status`.
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### etcdutl v3
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- Add command to generate [shell completion](https://github.com/etcd-io/etcd/pull/13142).
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- Add `migrate` command for downgrading/upgrading etcd data dir files.
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### package `client/pkg/v3`
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- [Trim the suffix dot from the target](https://github.com/etcd-io/etcd/pull/13712) in SRV records returned by DNS lookup
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### Package `server`
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- Package `mvcc` was moved to `storage/mvcc`
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- Package `mvcc/backend` was moved to `storage/backend`
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- Package `mvcc/buckets` was moved to `storage/schema`
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- Package `wal` was moved to `storage/wal`
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- Package `datadir` was moved to `storage/datadir`
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### etcd server
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- Add [`etcd --log-format`](https://github.com/etcd-io/etcd/pull/13339) flag to support log format.
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- Add [`etcd --experimental-max-learners`](https://github.com/etcd-io/etcd/pull/13377) flag to allow configuration of learner max membership.
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- Add [`etcd --experimental-enable-lease-checkpoint-persist`](https://github.com/etcd-io/etcd/pull/13508) flag to handle upgrade from v3.5.2 clusters with this feature enabled.
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- Add [`etcdctl make-mirror --rev`](https://github.com/etcd-io/etcd/pull/13519) flag to support incremental mirror.
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- Add [`etcd --experimental-wait-cluster-ready-timeout`](https://github.com/etcd-io/etcd/pull/13525) flag to wait for cluster to be ready before serving client requests.
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- Add [v3 discovery](https://github.com/etcd-io/etcd/pull/13635) to bootstrap a new etcd cluster.
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- Fix [non mutating requests pass through quotaKVServer when NOSPACE](https://github.com/etcd-io/etcd/pull/13435)
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- Fix [exclude the same alarm type activated by multiple peers](https://github.com/etcd-io/etcd/pull/13467).
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- Fix [Provide a better liveness probe for when etcd runs as a Kubernetes pod](https://github.com/etcd-io/etcd/pull/13399)
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- Fix [Lease checkpoints don't prevent to reset ttl on leader change](https://github.com/etcd-io/etcd/pull/13508).
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- Fix [assertion failed due to tx closed when recovering v3 backend from a snapshot db](https://github.com/etcd-io/etcd/pull/13500)
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- Fix [A client can panic etcd by passing invalid utf-8 in the client-api-version header](https://github.com/etcd-io/etcd/pull/13560)
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- Fix [etcd gateway doesn't format the endpoint of IPv6 address correctly](https://github.com/etcd-io/etcd/pull/13551)
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- Fix [A client can cause a nil dereference in etcd by passing an invalid SortTarget](https://github.com/etcd-io/etcd/pull/13555)
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- Fix [Grant lease with negative ID can possibly cause db out of sync](https://github.com/etcd-io/etcd/pull/13676)
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### tools/benchmark
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- [Add etcd client autoSync flag](https://github.com/etcd-io/etcd/pull/13416)
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### Metrics, Monitoring
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See [List of metrics](https://etcd.io/docs/latest/metrics/) for all metrics per release.
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- Add [`etcd_disk_defrag_inflight`](https://github.com/etcd-io/etcd/pull/13371).
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### Other
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- Use Distroless as base image to make the image less vulnerable and reduce image size.
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<hr>
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