Gabriele Bartolini

This recipe shows how to perform an online major PostgreSQL upgrade using the new declarative approach to logical replication introduced in CloudNativePG 1.25. By leveraging the Publication and Subscription CRDs, users can set up logical replication between PostgreSQL clusters with ease. I will walk you through configuring a PostgreSQL 15 publisher, importing schemas into a PostgreSQL 17 subscriber, and verifying data synchronisation, with the broader goal of highlighting the benefits of a repeatable and testable upgrade process.

In this CNPG recipe, we explore three essential command-line tools that simplify working with CloudNativePG in Kubernetes: view-secret, view-cert, and stern. These tools enhance tasks such as inspecting secrets, verifying certificates, and tailing logs across multiple pods, streamlining your PostgreSQL management experience in a cloud-native environment. Whether you’re troubleshooting or optimising workflows, these utilities will help you boost productivity and gain better control over your Kubernetes-based PostgreSQL deployments.

Welcome CNPG Playground, a local learning environment for exploring CloudNativePG and PostgreSQL in Kubernetes. Using Docker and Kind, it simulates real-world scenarios, enabling developers and DBAs to experiment with PostgreSQL replication across two clusters. Designed for hands-on learning, CNPG Playground provides an accessible entry point for testing configurations and features, with plans for future enhancements and community collaboration.

CloudNativePG 1.24 introduces a highly customisable approach to managing PostgreSQL synchronous replication through the new .spec.postgresql.synchronous stanza. In this article, I’ll guide you through configuring synchronous replication within a single Kubernetes cluster and across multiple clusters. I’ll explore quorum-based and priority-based replication methods, highlighting their benefits and trade-offs. Additionally, I’ll explain how to adjust the synchronous_commit setting to strike the right balance between data durability and performance.

In this article, I’ll explore how Kubernetes and CloudNativePG can be leveraged to streamline the testing of PostgreSQL patches, especially during a Commitfest. By automating the creation of PostgreSQL container images from any public Git repository, developers and reviewers can quickly and efficiently test patches within a Kubernetes environment. This approach not only saves time but also enhances the reliability of patches before integration into the main codebase.