Application deployment is the most important and frequently used feature of OpenShift, as that's what it was built for. All OpenShift users deal with application deployment from Docker images. If there is a well-known application and its image is already available on Docker Hub or any other registries, OpenShift users can deploy it in a simple and reproducible way. In this chapter, we will be working on the deployment of several simple applications from existing Docker images.
After completing this chapter, you will have learned about the following:
- Manual application deployment images, including manual Pod and Service object creation from a YAML file
- How to make use of the oc new-app utility to deploy applications from existing Docker images
- Exposing applications via routes