EDB Postgres for Kubernetes 1.9.0 release notes v1

This release of EDB Postgres for Kubernetes includes the following:

TypeDescription
FeatureAdd Kubernetes 1.22 to the list of supported Kubernetes distributions, and remove 1.16.
FeatureIntroduce support for the --restore-target-wal option in pg_rewind, in order to fetch WAL files from the backup archive, if necessary (available only with PostgreSQL/EPAS 13+).
FeatureVersion 1.9.0 is not available on OpenShift due to delays with the release process and the subsequent release of version 1.9.1.
FeatureExpose a default metric for the Prometheus exporter that estimates the number of pages in the pg_catalog.pg_largeobject table in each database.
FeatureEnhance the performance of WAL archiving and fetching, through local in-memory cache.
Bug fixExplicitly set the postgres user when invoking pg_isready - required by restricted SCC in OpenShift.
Bug fixProperly update the FirstRecoverabilityPoint in the status.
Bug fixSet archive_mode = always on the designated primary if backup is requested.