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CHANGELOG.md

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CHANGELOG

All notable changes to the a9s Dataservices on Kubernetes will be documented here, the format is based on Keep a Changelog.

Unreleased

Added

  • BackupPolicy feature: Create new backups based on a schedule. You can now configure a schedule for each Postgresql instance's backups and when the backups will be cleaned up.
  • PostgreSQL 16 support (Release Notes)
  • Improved backup/restore reliability across versions.

Updated

  • Bump Operator-SDK version to v1.34.1 for a8s-backup-manager
  • Remove hard-coded start commands from deployment manifests
  • Bump cert-manager version to v1.15.3

Fixed

  • Fix nil pointer dereference in OwnerUIDExtractor indexer function of PostgreSQL Operator

[1.2.0] - 2024-06-24

Added

  • Backup-manager now supports S3-compatible storage services, allowing users to back up and restore data with any S3-compatible provider.

Updated

  • Bump Operator-SDK version to v1.34.2 for postgresql-operator
  • Bump Operator-SDK version to v1.34.2 for a8s-service-binding-controller

[1.1.0] - 2024-06-05

Added

  • Added support for installing/uninstalling PostgreSQL extensions via the extensions field, including postgis, uuid-ossp, ltree, pgcrypto, pg_stat_statements, fuzzystrmatch, pg_trgm, and hstore.

Fixed

  • Fix PostgreSQL restart logic after user parameter updates.

Updated

  • The backup_agent has been bumped to the latest version and now includes buildx support.

[1.0.0] - 2024-03-15

Updated

  • Control plane images are now compatible with both ARM and AMD architectures.
  • Updated cert-manager to v1.12.0.
  • Documentation has been revised, removing outdated instructions.

[0.3.0] - 2023-05-15

Migration Instructions

  • If you use the extensions feature, delete the stateful set objects (not the PostgreSQL objects) for instances that use extensions. Your data will be preserved, and the stateful sets will automatically be recreated.
  • Remove old finalizer postgresql.operator.a8s.anynines.com from all PostgreSQL objects.
  • Migrate all v1alpha1 PostgreSQL custom resources to v1beta3 before migrating to v0.3.0, as PostgreSQL version v1alpha1 will not be available in v0.3.0.

Added

  • Protect PostgreSQL secrets against accidental or unwanted deletion by adding a finalizer.
  • Protect ServiceBinding secret against accidental or unwanted deletion by adding a finalizer.
  • Add optional read-only service to the PostgreSQL-Operator. The read-only service can be used to distribute the load of read operations across the PostgreSQL instance. It can be enabled via the optional enableReadOnlyService field on the Custom Resource.
  • Add field spec.resources.claims to the PostgreSQL CRD to allow configuring dynamic resources for the PostgreSQL instance Pods. This feature is in alpha, is implemented only on K8s clusters with version 1.26 or higher and the feature gate DynamicResourceAllocation enabled.
  • Add field spec.expose to expose a PostgreSQL instance to outside the K8s cluster where it runs.

Changed

  • Updated description of NamespacedName in servicebinding.
  • Deletion of PostgreSQL instance pods now runs in parallel, improving the deletion time in high availability setups.
  • In the Postgresql CRD, the description of the namespaceSelector field (which is one of the many fields that control pod affinity and anti-affinity) has been updated to reflect the fact that the field has graduated from beta to stable (in Kubernetes v1.24).
  • Breaking change: PostgreSQL CRD has been updated with the following:
    • spec.parameters.maxConnections has a minimum value of 1 and a maximum value of 262143 enforced.
    • spec.parameters.maxReplicationSlots has a minimum value of 0 and a maximum value of 262143 enforced.
    • spec.parameters.maxWALSenders has a minimum value of 0 and a maximum value of 262143 enforced.
    • spec.parameters.sharedBuffers has a minimum value of 16 and a maximum value of 1073741823 enforced.
    • spec.parameters.statementTimeoutMillis has a minimum value of 0 and a maximum value of 2147483647 enforced.

    Attempts to create a PostgreSQL API object with one or more values not compliant with the min and max listed above will be rejected with an error by the K8s API server.

  • Breaking change: Postgresql-controllers finalizer has been updated from postgresql.operator.a8s.anynines.com to a8s.anynines.com/postgresql.operator.
  • Breaking change: Postgresql-operator now uses an emptyDir instead of a persistent volume.
  • Breaking change: The field postgresConfiguration has been renamed to parameters in API Version v1beta3.
  • Make the secrets that store the credentials of the admin and replication roles of each PostgreSQL instance immutable. Preventing changes to credentials protects against accidental (or unwanted) updates that could cause service outages and improves performance by significantly reducing load on kube-apiserver for clusters that make extensive use of secrets.
  • Make service binding secrets immutable. Preventing changes to credentials protects against accidental (or unwanted) updates that could cause service outages and improves performance by significantly reducing load on kube-apiserver for clusters that make extensive use of secrets.
  • The backup_agent has been updated, and is now using a smaller image. The new version of the backup_agent logs to stderr instead of the previously used stdout.
  • Defaulting webhooks have been moved to API version v1beta3.

Removed

  • Breaking change: PostgreSQL version v1alpha1 has been removed and is replaced by version v1beta3.

[0.2.0] - 2022-11-08

Added

  • Publish API version v1beta3
  • max_locks_per_transaction PostgreSQL configuration property has been added
  • end-to-end tests on PostgreSQL tolerations to node taints.
  • service-binding controller emits events for change of state
  • add field extensions to Postgresql.spec, that allows installation of supported PostgreSQL extensions.
  • support for MobilityDB PostgreSQL extension
  • backup custom resources now have a maxRetries field that specifies how often a backup will be retried before entering a failed state
  • Add chaos test for crashing backup agent
  • Add chaos test for ensuring interrupted backup data is cleaned up from S3

Updated

  • Due to some internal code clean-up some error messages have changed in the logs
  • Rename tests from "integration tests" to "end-to-end tests", as they are end-to-end tests
  • Upgrade ginkgo from v1 to v2 in the end-to-end tests
  • Upgrade version of PostgreSQL-Operator to v0.39.0

Fixed

  • breaking change Fix bug that caused the event for the successful deletion of a DSI to be emitted multiple times and before the deletion had actually completed successfully
  • breaking change Fix issue where only a single event was emitted for two secrets of a PostgreSQL instance
  • Apply fix to PostgreSQL-Operator end-to-end tests to reduce flakiness
  • backup manager now handles crashes of the backup agent gracefully by restarting the failed backup

Changed

  • backup-manager now uses a dedicated ServiceAccount, instead of the default one
  • service-binding controller now uses a dedicated ServiceAccount, instead of the default one
  • postgresql-operator now used a dedicated ServiceAccount, instead of the default one
  • breaking change backup custom resources now use a list of Conditions instead of a single enum as the status
  • breaking change Recovery objects have been renamed to Restore. The new version of the operator does no longer watch for objects of the Recovery type. Do not upgrade while a Recovery object is in progress.

[0.1.0] - 2022-06-27

Added

  • Changelog has been added
  • Support for PostgreSQL 14 has been added
  • Instructions on how to update the framework have been added
  • Installation with the help of OLM bundles is supported
  • Validation webhooks are introduced, with the cert-manager to obtain certificates for them
  • Volume size of the PersistentVolume of a PostgreSQL instance is configurable

Fixed

  • Backup encryption password has been moved to a secret
  • Memory and CPU resource requests on operator pods have been increased to prevent issues on ARM

Changed

  • The PostgreSQL operator has been moved to the a8s-system namespace
  • Backup agent image and Spilo image are no longer configurable by the Application Developer, but rather are set by the Platform Operator
  • Fluentbit is updated to v1.9.4
  • Fluentd is updated to v1.14.6-1.1, additionally the OpenSearch plugin has been added and the deprecated ES plugin was removed
  • Update OpenSearch, OpenSearchDashboards to v2.0.0
  • Prometheus v2.32.1
  • Grafana 8.3.3, including updates to the documentation