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Percona Kubernetes Operator for Percona XtraDB Cluster 1.8.0

Release Highlights

  • It is now possible to use kubectl scale command to scale Percona XtraDB Cluster horizontally (add or remove Replica Set instances). You can also use Horizontal Pod Autoscaler which will scale your database cluster based on various metrics, such as CPU utilization.

  • Support for custom sidecar containers. The Operator makes it possible now to deploy additional (sidecar) containers to the Pod. This feature can be useful to run debugging tools or some specific monitoring solutions, etc. Sidecar containers can be added to pxc, haproxy, and proxysql sections of the deploy/cr.yaml configuration file.

New Features

Improvements

  • K8SPXC-442: The Operator can now automatically remove old backups from S3 storage if the retention period is set (thanks to Davi S Evangelista for reporting this issue)

  • K8SPXC-697: Add namespace support in the script used to copy backups from remote storage to a local machine

  • K8SPXC-627: Point-in-time recovery uploader now chooses the Pod with the oldest binary log in the cluster to ensure log consistency

  • K8SPXC-618: Add debug symbols from the percona-xtradb-cluster-server-debuginfo package to the Percona XtraDB Cluster debug docker image to simplify troubleshooting

  • K8SPXC-599: It is now possible to recover databases up to a specific transaction with the Point-in-time Recovery feature. Previously the user could only recover to specific date and time

  • K8SPXC-598: Point-in-time recovery feature now works with compressed backups

  • K8SPXC-536: It is now possible to explicitly set the version of Percona XtraDB Cluster for newly provisioned clusters. Before that, all new clusters were started with the latest PXC version if Version Service was enabled

  • K8SPXC-522: Add support for the runtimeClassName Kubernetes feature for selecting the container runtime

  • K8SPXC-519, K8SPXC-558, and K8SPXC-637: Various improvements of Operator log messages

Known Issues and Limitations

  • K8SPXC-701: Scheduled backups are not compatible with Kubernetes 1.20 in cluster-wide mode.

Bugs Fixed

  • K8SPXC-654: Use MySQL administrative port for Kubernetes liveness/readiness probes to avoid false positive failures

  • K8SPXC-614, K8SPXC-619, K8SPXC-545, K8SPXC-641, K8SPXC-576: Fix multiple bugs due to which changes of various objects in deploy/cr.yaml were not applied to the running cluster (thanks to Sergiy Prykhodko for reporting some of these issues)

  • K8SPXC-596: Fix a bug due to which liveness probe for pxc container could cause zombie processes

  • K8SPXC-632: Fix a bug preventing point-in-time recovery when multiple clusters were uploading binary logs to a single S3 bucket

  • K8SPXC-573: Fix a bug that prevented using special characters in XtraBackup password (thanks to Gertjan Bijl for reporting this issue)

  • K8SPXC-571: Fix a bug where Percona XtraDB Cluster went into a desynced state at backup job crash (Thanks to Dimitrij Hilt for reporting this issue)

  • K8SPXC-430: Galera Arbitrator used for backups does not break the cluster anymore in various cases

  • K8SPXC-684: Fix a bug due to which point-in-time recovery backup didn’t allow specifying the endpointUrl for Amazon S3 storage

  • K8SPXC-681: Fix operator crash which occurred when non-existing storage name was specified for point-in-time recovery

  • K8SPXC-638: Fix unneeded delay in showing logs with the kubectl logs command for the logs container

  • K8SPXC-609: Fix frequent HAProxy service NodePort updates which were causing issues with load balancers

  • K8SPXC-542: Fix a bug due to which backups were taken only for one cluster out of many controlled by one Operator

  • CLOUD-611: Stop using the already deprecated runtime/scheme package (Thanks to Jerome Küttner for reporting this issue)

Get expert help

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Last update: 2024-10-29