Developing applications on Kubernetes

Kubernetes is the foundation of cloud software architectures like microservices and serverless. For developers, Kubernetes brings new processes for continuous integration and continuous deployment; helps you merge code; and automate deployment, operation and scaling across containers in any environment.

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The Kubernetes platform for big ideas

Developing applications with Kubernetes

Kubernetes is a system for managing container based applications.  Kubernetes empowers developers to utilize new architectures like microservices and serverless that require developers to think about application operations in a way they may not have before. These software architectures can blur the lines between traditional development and application operations, fortunately Kubernetes also automates many of the tedious components of operations including deployment, operation and scaling. For developers Kubernetes opens a world of possibilities in the cloud, and solves many problems, paving the way to focus on making software.  

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Setup a Kubernetes development environment

Get your Kubernetes environment up and running on macOS, spin up an image in a container, and head to Coderland.

 

Start

 

OpenShift interactive tutorials

Lesson

Getting started with OpenShift

10 minutes | Beginner

Use the OpenShift Container Platform to build and deploy applications using both containers and orchestration.

Lesson

Logging in to an OpenShift cluster

10 minutes | Beginner

Access and login to an OpenShift cluster using the web console and command line, then add collaborators on your projects.

Lesson

Developing with odo

10 minutes | Beginner

Use OpenShift Do (odo), a CLI tool for developers, to manage application components on the OpenShift Container Platform.

Lesson

Deploying applications from images

15 minutes | Beginner

Deploy an application from an existing Docker-formatted image using the OpenShift web console and the command line using oc.

Lesson

Deploying applications from source

20 minutes | Beginner

Deploy an application from source code contained in a Git repository using a Source-to-Image (S2I) builder using Python.

Lesson

Connecting to a Database Using Port Forwarding

15 minutes | Beginner

Use the oc interactive shell to access a database, use port forwarding to temporarily expose a database outside of OpenShift, and access it from a database tool running on your local machine.

Lesson

Using the CLI to Manage Resource Objects

15 minutes | Beginner

Use the oc command line tool to determine what resource objects have been created related to your application, and how you can query or update them.

Lesson

OpenShift 4.2 playground

60 minutes | Beginner

Explore OpenShift 4.2 using this playground, which gives you access to an unstructured learning approach for experimentation.

Kubernetes development articles

Metrics and traces correlation in Kiali

Metrics and traces correlation in Kiali

February 18, 2020

Metrics, traces, and logs might be the Three Pillars of Observability, as you’ve certainly already heard. This mantra helps us focus our mindset around observability, but it is not a religion. “There is so much more data that can help us have insight into our running systems,” said Frederic Branczyk at KubeCon last year. These […]

Using secrets in Kafka Connect configuration

Using secrets in Kafka Connect configuration

February 14, 2020

Kafka Connect is an integration framework that is part of the Apache Kafka project. On Kubernetes and Red Hat OpenShift, you can deploy Kafka Connect using the Strimzi and Red Hat AMQ Streams Operators. Kafka Connect lets users run sink and source connectors. Source connectors are used to load data from an external system into […]

Installing Kubeflow v0.7 on OpenShift 4.2

Installing Kubeflow v0.7 on OpenShift 4.2

February 10, 2020

As part of the Open Data Hub project, we see potential and value in the Kubeflow project, so we dedicated our efforts to enable Kubeflow on Red Hat OpenShift. We decided to use Kubeflow 0.7 as that was the latest released version at the time this work began. The work included adding new installation scripts […]

How to use third-party APIs in Operator SDK projects

How to use third-party APIs in Operator SDK projects

February 4, 2020

The Operator Framework is an open source toolkit for managing Kubernetes-native applications. This framework and its features provide the ability to develop tools that simplify complexities, such as installing, configuring, managing, and packaging applications on Kubernetes and Red Hat OpenShift. In this article, we show how to use third-party APIs in Operator-SDK projects. In projects […]

Introduction to Eclipse JKube: Java tooling for Kubernetes and Red Hat OpenShift

Introduction to Eclipse JKube: Java tooling for Kubernetes and Red Hat OpenShift

January 28, 2020

We as Java developers are often busy working on our applications by optimizing application memory, speed, etc. In recent years, encapsulating our applications into lightweight, independent units called containers has become quite a trend, and almost every enterprise is trying to shift its infrastructure onto container technologies like Docker and Kubernetes. Kubernetes is an open […]

Open Virtual Network unidling

Open Virtual Network unidling

January 27, 2020

Open Virtual Network (OVN) is a project born as a sub-component of Open vSwitch (OVS), which is a performant, programmable, multi-platform virtual switch. OVN allows OVS users to natively create overlay networks by introducing virtual network abstractions such as virtual switches and routers. Moreover, OVN provides methods for setting up Access Control Lists (ACLs) and […]

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Adventures Aboard the Kluster Kruise Ship

This story uses a series of metaphors to introduce the concept of Operators, explain how they aid in the automation of clusters, and provide a high-level overview of Operator Lifecycle Management in a way that anyone can understand. Readers will meet Kate the octopus, esteemed cruise ship director, who finds herself overwhelmed with the responsibilities associated with her position.

 

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