TiDB Operator 1.4.0-alpha.1 Release Notes

Release date: September 27, 2022

TiDB Operator version: 1.4.0-alpha.1

Compatibility Change

Due to changes in #4683, the volume modification feature is change to be disabled by default. If you want to resize PVCs of a component, you need to manually enable this feature.

Due to changes in #4494, if you deploy TiCDC without setting the log-file configuration item, upgrading TiDB Operator to v1.4.0-alpha.1 causes TiCDC to rolling upgrade.

Support setting location labels for tidb-server automatically (#4663, @glorv)
Add new fields spec.tikv.scalePolicy and spec.tiflash.scalePolicy to scale multiple TiFlash and TiKV Pods simultaneously (#3881, @lizhemingi)
Add a new field startScriptVersion to choose start script for all components (#4505, @KanShiori)
Allow to use shortened label names to refer to some well-known Kubernetes labels in PD's location labels (#4688, @glorv)
Support point-in-time recovery from a snapshot backup and a log backup (#4648 #4682 #4694 #4695, @WizardXiao)
Add a new feature gate VolumeModifying to enable the volume modification feature, and the feature is disable by default (#4683, @liubog2008)
Support changing the StorageClass of a TidbCluster component to modify the IOPS and throughput for AWS EBS volumes used by a cluster (#4683, @liubog2008)
Support setting the --check-requirements argument for BR (#4631, @KanShiori)
Support using the field additionalContainers to customize pod container configuration. If the container names in this field match with the ones generated by TiDB Operator, the container configurations will be merged into the default configuration. (#4530, @mikechengwei)

Optimize prometheus remoteWrite configuration for TidbMonitor (#4247, @mikechengwei)
Add metrics port for TiFlash Service (#4470, @mikechengwei)
Update the default value of the log-file configuration item for TiCDC to avoid overwriting /dev/stderr (#4494, @KanShiori)

Fix the issue that cluster sync gets stuck caused by suspending a cluster when scaling (#4679, @KanShiori)
Fix the issue that TiDB Operator panics if PD spec is nil (#4679, @KanShiori)