EDB CloudNativePG Cluster 1.27.0-rc1 release notes v1.27.0-rc1

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This documentation covers the upcoming release of EDB Postgres® AI for CloudNativePG™ Cluster; you may want to read the docs for the current version.

Released: 29 July 2025

This is a preview (Release Candidate 1) of the next release of EDB CloudNativePG Cluster (v1.27.0).

Important changes

A change in the default behavior of the liveness probe, now enforcing the shutdown of an isolated primary within the livenessProbeTimeout (30 seconds), will require a restart of your pods.

This release includes the following:

Features

Description	Addresses
Dynamic loading of PostgreSQL extensions, packaged as OCI-compliant container images, is now supported. The `.spec.postgresql.extensions` stanza allows you to mount PostgreSQL extensions as read-only and immutable volumes inside instance pods. This enables dynamic extension management without rebuilding base images.	#7991
Logical decoding slot synchronizatio in HA clusters Added the `synchronizeLogicalDecoding` field under `spec.replicationSlots.highAvailability` to enable automatic synchronization of logical decoding slots across high-availability clusters. This ensures that logical replication subscribers continue seamlessly after a publisher failover.	#7931
Primary Isolation Check Promoted to stable the liveness pinger experimental feature introduced in 1.26, adding the `.spec.probes.liveness.isolationCheck` section to enable primary isolation checks in the liveness probe by default. This improves the detection and handling of primary connectivity issues in Kubernetes environments.	#7845

Enhancements

Description	Addresses
Introduced an opt-in experimental feature that enables quorum-based failover ...to improve safety and data durability during failover events. This feature, also called failover quorum, can be activated via the `alpha.k8s.enterprisedb.io/failoverQuorum` annotation.	#7572
Added support for user maps for predefined users such as `streaming_replica` ...allowing the use of self-managed client certificates with different Common Names in environments with strict policies or shared CAs, while still enabling replicas to join clusters using the `streaming_replica` role.	#7725
Added a new `PhaseFailurePlugin` phase in the `Cluster` status ...to improve observability of plugin-related failures.	#7988
Made the `Backup.spec` field immutable after creation ...ensuring consistency and predictability in backup operations.	#7904
Added `fqdn-uri` and `fqdn-jdbc-uri` fields in the user secret ...to simplify the retrieval of fully qualified domain name-based connection strings.	#7852
Added `Postgres` interface support to the CNP-I operator ...continuing the transition toward a plugin-based architecture.	#7179
Added `metrics` capabilities to the CNP-I instance webserver ...enabling metrics exposure directly from the instance for better observability.	#8033

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