Candidate Architecture: OpenShift + Java/Spring + React

I am working in a project with some folks at 10Pines. The client is a big company with operations in most countries of LatinAmerica. From a functional point of view, the project is not so complex, but it has some interesting challenges:

  1. The redesign of  delivery process
  2. The enhacement of the SCM strategy
  3. The design and implementation of a new infrastructure based on OpenShift

In this article I want to focused on points 2 and 3.

Regarding SCM we are using Git (BitBucket) to store code …..and configuration, yes, configuration. We store configuration in a Git repository and make it accesible via Spring Cloud Config. At the same time we manage infrastructure as code, that is: the definition of all the infrastructure is written in code, basically Dockerfiles and other scripts. And of course this is also stored in a Git repository.

Regarding the new infrastructure we are using Docker on Kubernetes, or more specifically OpenShift. We consider we are taken too much risk, so we are not using all OpenShift features, for example we are not using the integrated Jenkins or the configMaps. We continue using our previous build process with some minor extensions, that is: our old and solid Jenkins takes care of the CI process, when we have a feature ready we build the corresponding artifact and publish it in Artifactory. Then Jenkins interacts with OpenShift to trigger the build of the corresponding Docker Image. The process of building the Docker image runs inside OpenShift and implies downloading the corresponding artifact from Artifactory. Once the new image is built and publish, a new deployment is automatically triggered. The following picture represents our build pipeline.

openshift_2

In terms of runtime, our application includes 2 artifacts: a RestAPI (built on Spring-Boot) and a React application (that is served by Nginx). Each of these artifacts is packaged into a Docker container. Finally we have 2 pods, each of them runs 2 docker containers: one that contains part of the application and another one that runs Spring Cloud Config. The following picture shows a summary of this runtime architecture.

 

It worth e mentioning that Spring Cloud Config container is instantiated in each pod but it is only accesible inside the pod.

To be continue…

 

 

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