Story Category: Technology

Stories Category: Technology

Spring Boot on k8s: endless flexibility in a single pull request | by Wouter Poncin | Sep, 2020 | Medium

admin 4 days ago in

Working with Spring Boot on kubernetes (having everything “as-code”) allows for faster delivery, but most of all: happier developers! Many many years ago when I started working at one of the predecessors of de Volksbank, life was simple: when you finished development of a feature, you just saved your updates in the main branch of CVS or later SVN and somebody else then did all…

[OCP][101] SVC ทำงานยังไง part 1. SVC คืออะไร | by Authapon Kongkaew | Sep, 2020 | Medium

admin 5 days ago in

SVC คืออะไร Internal loadbalance ในโลกของ kubernetes ที่ทำหน้าที่รับ connection แล้วกระจายโหลดไปยัง pods ต่างๆให้ถูกต้อง โดย pods ที่มาเรียกใช้งาน จะรู้จัก service ปลายทางในรูปแบบ naming เช่น app01.demo-project.svc Yaml ไฟด์ ประกอบด้วย อะไรบ้าง Port คือ port ที่เปิดรับจาก connection จาก pods อื่น มาเรียกใช้งาน targetPort คือ port ที่ application เปิดรับ selector คือ pods ที่เลือกใช้ policy นี้ (ในตัวอย่าง เลือก pods ที่ติด label appName เป็น app01 type คือประเภทของ loadbalance จากตัวอย่างระบุเป็น clusterIP จะดู config svc ได้ยังไง? ใช้ oc command…

GCP | Kubernetes Engine | Quick Start | by sdasarathan | Sep, 2020 | Medium

admin 5 days ago in

Google Kubernetes Engine (GKE) is a managed environment for deploying, managing, and scaling your containerized applications using Google infrastructure. Clusters are formed by grouping multiple VM’s together. They form a platform that can be maintained easily. What stuffs are managed so that one does not need to worry about its configuration or maintenance? At least one master and multiple worker nodes from a cluster. The…

12 Factor Apps in Practice. This is a practical look at 12 factor… | by Nik Stehr | Sep, 2020...

admin 5 days ago in

This is a practical look at 12 factor apps and how to engineer them for real. A simple Java microservice is evolved architecturally, from a single process app, to a multi process Docker containerised app leveraging a redis cache, first running on the container orchestration platform Kubernetes, and then rolled out to Red Hat OpenShift. It’s hands-on-keyboard, with exercises to work through, technical prerequisites: Take…

Deploying to RedHat OpenShift. A quick walk through how to use Red… | by Nik Stehr | Sep, 2020 |...

admin 5 days ago in

A quick walk through how to use Red Hat OpenShift to create and deploy a container image from a git project that contains a simple mood board REST service, deploy a redis container that acts as a backing service, and test. The source code lives at https://github.com/stehrn/mood-board. Sign up to OpenShift for free here to get: Log in to admin home page: Click ‘Create Project’…

Managing Software through the Operator Framework | by Hong Hua | Sep, 2020 | Medium

admin 5 days ago in

Software used to be installed using a manifest file in the form a shellscript. Then, the cloud-native container platform arrived, and the old way didn’t quite work for this next-generation application environment. A robust control plane was needed to manage the complexities of the myriad range of softwares throughout their various lifecyles, including patching and upgrade tasks. There is increasing adoption of an automated, reusable…

Design Choices for a Kubernetes EKS Platform-Part 1 | by Marco Giovannini | Sep, 2020 | Medium

admin 5 days ago in

Which Kubernetes version? Background information about release interval and support time of Kubernetes and EKS The first choice we have to make when starting the design is which version we should pick. This first article provide useful background information about release interval and support time of Kubernetes and EKS that we will use to take a decision later on. Kubernetes upstream project releases a new…

Graceful Draining: Secret to node rotation in EKS | by Vaibhav Khurana | Sep, 2020 | Medium

admin 5 days ago in

Graceful termination of the applications is as necessary as running an application. If you miss this part, then there are always chances that your users encounters a lot of errors. Application graceful termination is very well explained in this article. What I am trying to focus today is on what happens if we want to do any maintenance on the worker nodes, for instance, we…

Do Engatinhando aos Primeiros Passos com Rancher 2.0 | by Marcelo de Souza Vieira | ;) -> Java e Arquitetura...

admin 5 days ago in

Cada dia que passa surge muita tecnologia nova, framework novo, idéias novas, etc e tal. Isso até me deprime, porque eu to perdendo essa corrida. Quanto mais corro pra aprender, mais coisas novas surgem que não conheço. Vamos agora dar os primeiros passos com o Rancher. O Rancher 2.0 é uma plataforma empresarial do Kubernetes que permite gerenciar todas as distribuições do Kubernetes, todos os…

Kubernetes API. Let’s discuss little bit about API… | by Rutik Nisarg Samal | Sep, 2020 | Medium

admin 5 days ago in

Let’s discuss little bit about API, many of you might have already heard or worked on different APIs. I am putting a brief description about API for those who are new to this. API-Application Programming Interface As per Wikipedia, An application programming interface (API) is a computing interface which defines interactions between multiple software intermediaries. It defines the kinds of calls or requests that can…