kind

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.

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.

In modern Kubernetes environments, isolating PostgreSQL workloads is crucial for ensuring stability, security, and performance. This article, building on the previous CNPG Recipe #10, explores advanced techniques for isolating PostgreSQL instances using Kubernetes with Kind. By applying taints, labels, and anti-affinity rules, you can ensure that PostgreSQL nodes are dedicated exclusively to database workloads, preventing overlap with other services and enhancing fault tolerance. Whether you’re simulating a production environment or managing a live deployment, these strategies will help you maintain a robust and isolated PostgreSQL cluster in Kubernetes.

This article provides a step-by-step guide to deploying PostgreSQL in Kubernetes using the kind tool (Kubernetes IN Docker) on a local machine, simulating a production-like environment. It explains how to create multi-node clusters and use node labels, specifically proposing the node-role.kubernetes.io/postgres label to designate PostgreSQL nodes. The article also demonstrates how to schedule PostgreSQL instances on these designated nodes, emphasizing the importance of workload isolation in Kubernetes environments. Thanks to Kubernetes’ portability, these recommendations apply to any cloud deployment—whether private, public, self-managed, or fully managed.

The article explores the deployment of pgAdmin4, a popular graphical user interface for PostgreSQL, within a CloudNativePG environment, primarily for evaluation and educational purposes. The process involves deploying pgAdmin4 to connect to a PostgreSQL cluster, navigating its interface, and utilizing SQL functionality. The article provides detailed deployment instructions and highlights the use of the --mode desktop option for seamless integration.

Explore the secure defaults of a PostgreSQL cluster in this CloudNativePG recipe, aligning with the principle of least authority (PoLA). Our commitment to security and operational simplicity shines through default configurations, balancing robust protection with user-friendly settings. Advanced users can customize as needed. The article navigates default intricacies, PostgreSQL Host-Based Authentication, and the scenarios for enabling superuser access. We also touch on the careful use of the ALTER SYSTEM command, emphasizing our dedication to secure and simple operations.

Dive into the nitty-gritty of how CloudNativePG works its magic with PostgreSQL cluster stuff, zooming in on configmaps and secrets. Peek behind the curtain of the default Private Key Infrastructure – the secret sauce for stress-free mutual TLS authentication. Get to know the default user and database setups, all decked out for maximum security. This article is your go-to roadmap, cruising through CloudNativePG’s resource wizardry and dishing out real-world tips for a breeze in deploying and handling PostgreSQL clusters.

Dive into the world of running PostgreSQL in Kubernetes with CloudNativePG in this inaugural guide. Follow along as we walk you through the process of setting up a disposable local cluster using kind. Gain insights into creating PostgreSQL clusters, installing CloudNativePG, and leveraging the cnpg plugin for kubectl. Wrap up your journey by tidying up your local cluster. Whether you’re a developer or a DBA, this foundational guide provides a launchpad for your future CloudNativePG explorations with a fully open source stack.