Community Picks·2yWait, What’s GitOps?
GitOps is a modern way to manage cloud-native systems using Git as version control for infrastructure. Argo CD, Flux, and Terraform are popular tools for implementing GitOps. Setting up GitOps with Argo CD involves deploying it to a Kubernetes cluster, connecting it to a Git repository, and integrating with a CI pipeline.
Medium·2yZarf: The Open-Source Deployment Tool You Need 💠
Zarf is an open-source deployment tool that simplifies software deployment, especially in air-gap or disconnected environments. It offers features such as simplifying Kubernetes cluster creation, enabling cluster logging, automating the creation of Software Bill of Materials, and supporting highly regulated industries. The post provides a hands-on example of how to use Zarf to deploy the podinfo app.
Medium·2yDevcontainers: Minimizing local machine dependencies with replicable Setups
Devcontainers offer a standardized approach to creating and managing development environments, minimizing local machine dependencies. They provide consistency, isolation, portability, and ease of onboarding. The key insights include specifying the OS and tools, using Visual Studio Code and Docker, and ensuring secure and immutable development environments. A hands-on example is provided for creating a Python project Devcontainer. Overall, Devcontainers enhance collaboration, onboarding, and reproducibility of development environments.
Medium·2yLessons From Our 8 Years Of Kubernetes In Production — Two Major Cluster Crashes, Ditching Self-Managed, Cutting Cluster Costs, Tooling, And More
Lessons learned from running Kubernetes in production for 8 years include the complexity of Kubernetes, the importance of managing Kubernetes certificates, keeping Kubernetes and Helm up to date, maintaining centralized Helm charts, disaster recovery planning, backing up secrets, considering vendor-agnostic vs "going all in" approaches, and optimizing node types and cost with reserved instances. Observability through monitoring, alerting, and logging is crucial, and security measures like access control and container vulnerability scanning are necessary. The company experienced two major cluster crashes due to certificate expirations. Migrating from self-managed on AWS to managed on Azure (AKS) improved ease of use, integrated Azure services, and reduced costs. Overall, Kubernetes has been a game-changer for the company, providing scalability, cost optimization, improved developer experiences, and faster time-to-market for new products and services.
Medium·2y13 Kubernetes Tricks You Didn’t Know
Discover 13 useful Kubernetes tricks that can enhance management, scalability, and security of containerized applications. Learn about PreStop hooks, automated secret rotation, debugging with ephemeral containers, horizontal pod autoscaling with custom metrics, using init containers for setup scripts, node affinity for workload-specific scheduling, taints and tolerations for pod isolation, pod priority and preemption, configmaps and secrets for dynamic configuration, direct container debugging with kubectl debug, efficient resource management with requests and limits, extending Kubernetes with custom resource definitions (CRDs), and leveraging the Kubernetes API for dynamic interaction and automation.
AWS in Plain English·2yHow to Transform Kubernetes Manifests into Helm Charts?
Learn how to transform Kubernetes manifests into Helm Charts, making deployments more efficient and manageable. Understand Helm basics, organize your manifests, create a Helm chart structure, customize values, refactor manifests using Helm templating, and install the Helm chart. Also, get additional tips and best practices for chart versioning and dependency management.
AWS Tip·2yFrom Code to Cluster: ArgoCD GitOps for Kubernetes
The post discusses the concept of GitOps and introduces ArgoCD as an open-source tool for implementing GitOps in the Kubernetes environment. It also provides step-by-step instructions for setting up an AKS Cluster using Terraform and installing ArgoCD on the cluster. The post concludes with a discussion on creating applications in ArgoCD and using Jenkins for Docker image CI/CD.
