Learn how to copy files to and from a running container without rebuilding the container image. Augment this with a watch function that automatically applies local changes to a running container so you can immediately see the effects in your application.
- Rapid inner-loop development by modifying a running container
- OpenShift Projects and Applications
You can modify an application in a container to develop and test before building a new version of the container's immutable image. Automatatically synchronizing the container with local changes speeds the "inner loop" of develop and test cycles, especially with interpreted programming languages.
This OpenShift cluster will self-destruct in one hour.
In this course you learned about
oc commands you can use to transfer files to and from a running container, as well as how to set up live synchronization so changes are automatically copied from a local machine into a running container.
You can continue learning more about OpenShift and how to develop applications on the platform by completing other tutorials at https://learn.openshift.com.
For developer-related resources about OpenShift, visit https://developers.redhat.com/products/openshift/getting-started.
Run OpenShift Locally with CodeReady Containers
CodeReady Containers allows you to run a minimal, pre-configured OpenShift 4 cluster on your local machine. The project supports Windows 10, macOS, and Linux. To find out more or download CodeReady Containers, visit https://developers.redhat.com/products/codeready-containers/overview
Compare Hosted, Managed, or On Premises OpenShift
Learn more about the different OpenShift platform variants here: https://www.openshift.com/try
Browse the Documentation
If you want to learn about particular OpenShift concepts in more depth, visit the documentation: https://docs.openshift.com/container-platform/latest
Transferring Files in and out of Containers
Topic 1 - Creating an Initial Project
Before we get started, you need to login and create a project in OpenShift to work in.
To login to the OpenShift cluster used for this course from the Terminal, run:
oc login -u developer -p developer
This will log you in using the credentials:
You should see the output:
Login successful. You don't have any projects. You can try to create a new project, by running oc new-project <projectname>
To create a new project called
myproject run the command:
oc new-project myproject
You should see output similar to:
Now using project "myproject" on server "https://openshift:6443". You can add applications to this project with the 'new-app' command. For example, try: oc new-app django-psql-example to build a new example application in Python. Or use kubectl to deploy a simple Kubernetes application: kubectl create deployment hello-node --image=gcr.io/hello-minikube-zero-install/hello-node
We are not going to use the web console for this course, but if you want to check anything from the web console, switch to the Console and use the same credentials to login as you used above to login from the command line.