How To Dev

Introduction In previous articles, I've guided you through using Kubernetes (K8s) to create resources from Docker images , resulting in stateless applications. This means no data is retained during usage, and restarting resources resets the application to its initial state. If you're familiar with Docker , you might know about mounting volumes to save data externally and reattach it to a Docker container as needed. In Kubernetes , you can achieve a similar result using PersistentVolume (PV) and PersistentVolumeClaim (PVC) to build stateful applications. Using PV and PVC in Kubernetes is crucial for real-world applications because they allow your data to persist across frequent deployments and restarts. Applications often face crashes or restarts due to issues, and having persistent data ensures seamless operation. PersistentVolume (PV) : A storage resource provisioned by an administrator. It exists independently of the pod lifecycle PersistentVolumeClaim (PVC) : A reques...

Introduction This article will guide you through using Nginx Ingress Controller and Cert Manager on Kubernetes (K8s) to automatically issue TLS (Transport Layer Security) certificate . To follow along, you'll need: Basic knowledge of Google Kubernetes Engine for cluster initialization Understanding of K8s Deployment, Service to deploy applications Familiarity with Helm for installing necessary charts. Ingress Ingress is a Kubernetes resource used to manage external access to Services within a cluster . It acts like a traffic router, allowing you to define routing configurations to efficiently manage incoming traffic to Services . Ingress Controller An Ingress Controller is a distinct component from Ingress itself. There are various types of Ingress Controllers , each capable of different deployments. However, their main function is to manage and deploy according to Ingress rules . When requests reach Ingress, the Ingress Controller uses these defined rules to route traffic...

Introduction DevOps is a combination of development (Dev) and operations (Ops), aimed at uniting people, processes, and technology to enhance the software development lifecycle. Here are some key aspects of DevOps: Collaboration and Communication: DevOps fosters a culture where development, IT operations, quality engineering, and security teams work together seamlessly. Continuous Integration and Continuous Delivery (CI/CD): These practices automate the integration and delivery of code changes, ensuring faster and more reliable software releases. Infrastructure as Code (IaC): This approach involves managing and provisioning computing infrastructure through machine-readable scripts, rather than physical hardware configuration. Monitoring and Logging: Continuous monitoring and logging help teams to detect issues early and maintain system reliability. Automation: Automating repetitive tasks reduces errors and increases efficiency, allowing teams to focus on more strategic work. By impleme...

Introduction Kubernetes (often abbreviated as K8s ) is an open-source system designed to automate the deployment, scaling, and management of containerized applications. This page serves as a collection of articles related to Kubernetes (K8s) , including theoretical concepts and practical guides on using Kubernetes to set up essential tools for the software development process. I will continue to update this series with new articles as ideas come to mind, to ensure the series becomes more comprehensive. The articles are arranged in increasing order of difficulty to make it easier for you to follow. If you have time, it's recommended that you start from the beginning of the series to acquire the necessary knowledge and information that will prepare you for the subsequent articles. Key Topics Covered in This Series Basic Knowledge : Fundamental concepts, common commands, etc. Resources : Pod, Deployment, Service, StatefulSet, Ingress, etc. Pod Autoscaler : Horizontal and Vertical sc...