Tag Archives: Docker

In this docker tutorial series, my aim is to explain basics of docker and to do that with min number of words but maximum number of examples. Before doing anything I want you to install docker on your machine and I hope you have an idea what docker does. If not please check docker.com. Now let me explain two basic ...

I’ve recorded a video how to migrate databases for applications that are deployed in a managed Kubernetes environment using Flyway and init containers. In order to achieve zero-downtime deployments, we need to make sure that our persistence concept supports N-1 compatibility, which requires us to be able to migrate our database schemas, ideally from reproducible scripts stored in version control. ...

The Horrible Dilemma of Dockerising Databases for Testing When working with database client code you have essentially got 4 options for testing: Mock out the entire dao layer – so your DB code isn’t tested – which is great when it’s entirely autogenerated and trustworthyMock the DB driver – an often messy implementation-driven rewrite-backwards of the client code just to ...

In this article, we will see how to containerize the Spring Boot applications with Buildpacks. In one of the previous articles, I discussed Jib. Jib allows us to build any Java application as the docker image without Dockerfile. Now, starting with Spring Boot 2.3, we can directly containerize the Spring Boot application as a Docker image as Buildpacks support is ...

It is safe to say that the Microservice + Cloud combination is all the rage these days. Microservices are being developed more than ever, in turn resulting in an increase in the number of application deployments. During the past decade, containerization and orchestration tools such as Docker and Kubernetes were developed, making the microservice pattern really easy to adopt. This ...

On the previous blog we created our Kubernetes deployment files for our Ignite application. On this blog we shall deploy our Ignite application on Kubernetes. I will use minikube on this. Let’s build first 1 mvn clean install I shall create a simple docker image, thus a Dockerfile is neeeded.Let’s add a Dockerfile to the root of our project. 1 ...

Previously we have been successful on creating our first Spring boot Application powered by Apache Ignite. On this blog we shall focus on what is needed to be done on the Kubernetes side in order to be able to spin up our application. As described on a previous blog we need to have our Kubernetes RBAC policies in place. We ...

On a previous series of blogs we spun up an Ignite cluster on a Kubernetes cluster.In this tutorial we shall use the Ignite cluster created previously on with a Spring Boot Application. Let’s create our project using Spring Boot. The Spring Boot application will connect to the Ignite cluster. Let’s add our dependencies. <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ...

Previously we saw the Ignite configuration that comes with the Kubernetes installation.The default configuration does not have persistence enabled so we won’t focus on any storage classes provided by the helm chart. The default installation uses a stateful set. You can find more information on a stateful set on the Kubernetes documentation. 01 02 03 04 05 06 07 08 ...