Release notes for CloudNativePG 1.27

History of user-visible changes in the 1.27 minor release of CloudNativePG.

For a complete list of changes, please refer to the commits on the release branch in GitHub.

Version 1.27.0

Release date: Aug 12, 2025

Important changes:

Features:

  • Dynamic loading of PostgreSQL extensions: Introduced the .spec.postgresql.extensions stanza for mounting PostgreSQL extensions, packaged as OCI-compliant container images, as read-only and immutable volumes inside instance pods. This allows dynamic extension management without rebuilding base images. (#7991).

  • Logical decoding slot synchronization in HA clusters: Added the synchronizeLogicalDecoding field under spec.replicationSlots.highAvailability to enable automatic synchronization of logical decoding slots across high-availability clusters, ensuring 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:

  • 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.cnpg.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).

  • CNPG-I:

    • Added Postgres interface support to the CNPG-I operator, continuing the transition toward a plugin-based architecture (#7179).

    • Added metrics capabilities to the CNPG-I instance webserver, enabling metrics exposure directly from the instance for better observability (#8033).

Fixes

  • Unblocked rollouts when migrating to the barman-cloud plugin using the switchover strategy. Former primary Pods now restart correctly after WAL archiving fails due to missing plugin support. (#8236)

Supported versions

  • Kubernetes 1.33, 1.32, and 1.31
  • PostgreSQL 17, 16, 15, 14, and 13
    • PostgreSQL 17.5 is the default image
    • PostgreSQL 13 support ends on November 12, 2025