Among other methods, OpenShift allows for deploying applications directly from existing Docker images. Imagine that your development team has an in-house process of building Docker images from their applications—this way, you can deploy applications in an OpenShift environment by using these images without any modification, which greatly simplifies migration to OpenShift. It takes several steps to create all required OpenShift entities.
First, you have to create a pod, which runs a container deployed from the application's Docker image. Once the pod is up and running, you may need to create a service to have a persistent IP address and internal DNS record associated with it. The service allows your application to be accessible via a consistent address:port pair internally inside OpenShift. This may be enough for internal applications that...