{"id":50050,"date":"2026-06-23T05:56:48","date_gmt":"2026-06-23T05:56:48","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=50050"},"modified":"2026-06-23T05:56:50","modified_gmt":"2026-06-23T05:56:50","slug":"openshift-lab-2-install-an-application-from-source-code-in-a-github-repository-using-the-openshift-web-console","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/openshift-lab-2-install-an-application-from-source-code-in-a-github-repository-using-the-openshift-web-console\/","title":{"rendered":"Openshift: Lab 2 – Install an application from source code in a GitHub repository using the OpenShift web console"},"content":{"rendered":"\n

What this lab teaches<\/h2>\n\n\n\n

The lab teaches how to use the OpenShift web console<\/strong> to deploy an application directly from source code stored in GitHub. The example uses OpenShift\u2019s Source-to-Image<\/strong>, also called S2I<\/strong>, process. OpenShift downloads the source code, builds a container image, creates pods, creates a service, and optionally creates a route so the application can be accessed from a browser.<\/p>\n\n\n\n

Prerequisites<\/h2>\n\n\n\n

Before doing this lab, the learner should understand:<\/p>\n\n\n\n

Required Knowledge<\/th>Why It Matters<\/th><\/tr><\/thead>
OpenShift and Kubernetes relationship<\/td>OpenShift runs applications on Kubernetes<\/td><\/tr>
Public Git repositories such as GitHub<\/td>Source code is pulled from GitHub<\/td><\/tr>
OpenShift web console access<\/td>The lab uses the GUI, not CLI<\/td><\/tr>
Administrator and Developer perspectives<\/td>The lab uses the Developer view and +Add<\/code> flow<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Application used in the lab<\/h2>\n\n\n\n
Item<\/th>Value<\/th><\/tr><\/thead>
Application type<\/td>Python web application<\/td><\/tr>
Builder image<\/td>Python 3.9<\/td><\/tr>
Git repository<\/td>https:\/\/github.com\/openshift-instruqt\/blog-django-py<\/code><\/td><\/tr>
Deployment resource type<\/td>Deployment<\/td><\/tr>
Route<\/td>Enabled<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Complete lab flow<\/h2>\n\n\n\n
Step<\/th>Action<\/th>Details<\/th><\/tr><\/thead>
1<\/td>Open Developer Sandbox<\/td>Start from the Developer Sandbox entry page<\/td><\/tr>
2<\/td>Log in<\/td>Use Red Hat account credentials<\/td><\/tr>
3<\/td>Open OpenShift web console<\/td>Go into the OpenShift console<\/td><\/tr>
4<\/td>Click +Add<\/code><\/td>Use the left-side menu<\/td><\/tr>
5<\/td>Search for Python<\/td>In the Developer Catalog \/ All Services page<\/td><\/tr>
6<\/td>Select Python<\/td>Choose the Python service\/template<\/td><\/tr>
7<\/td>Click Create<\/code><\/td>Opens the Source-to-Image application form<\/td><\/tr>
8<\/td>Select Python 3.9<\/td>The lab specifically uses Python 3.9 builder image<\/td><\/tr>
9<\/td>Enter Git repo URL<\/td>Use the GitHub repo above<\/td><\/tr>
10<\/td>Review auto-filled fields<\/td>OpenShift fills Application and Name fields<\/td><\/tr>
11<\/td>Set resource type<\/td>Choose Deployment<\/code><\/td><\/tr>
12<\/td>Enable route<\/td>Select Create a route to the Application<\/code><\/td><\/tr>
13<\/td>Click Create<\/code><\/td>Starts the build and deployment process<\/td><\/tr>
14<\/td>Watch Topology<\/td>App appears as a circle in Topology view<\/td><\/tr>
15<\/td>Wait for build completion<\/td>Light blue during build, dark blue when running<\/td><\/tr>
16<\/td>Open application<\/td>Click the external\/open-url icon on the app graphic<\/td><\/tr>
17<\/td>Delete application<\/td>Right-click the application in Topology and choose Delete Application<\/td><\/tr>
18<\/td>Confirm deletion<\/td>Type the application name when prompted<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

What OpenShift creates automatically<\/h2>\n\n\n\n

When you complete the form and click Create<\/strong>, OpenShift automatically creates several resources:<\/p>\n\n\n\n

Resource<\/th>Purpose<\/th><\/tr><\/thead>
Build \/ S2I process<\/td>Builds container image from Git source<\/td><\/tr>
Container image<\/td>Application runtime image<\/td><\/tr>
Pod<\/td>Runs the application container<\/td><\/tr>
Deployment<\/td>Manages the application rollout<\/td><\/tr>
Service<\/td>Provides internal cluster networking<\/td><\/tr>
Route<\/td>Provides browser-accessible external URL<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Important concepts from the lab<\/h2>\n\n\n\n
Concept<\/th>Explanation<\/th><\/tr><\/thead>
Source-to-Image<\/td>OpenShift builds a container image directly from source code<\/td><\/tr>
Developer Catalog<\/td>Web console area used to choose app templates\/services<\/td><\/tr>
Builder image<\/td>Base\/runtime image used to build the application<\/td><\/tr>
Git Repo URL<\/td>Source location OpenShift pulls from<\/td><\/tr>
Deployment<\/td>Kubernetes\/OpenShift object that manages running pods<\/td><\/tr>
Route<\/td>OpenShift object that exposes the app externally<\/td><\/tr>
Topology view<\/td>Visual view of running applications in OpenShift<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

CLI equivalent of the same lab<\/h2>\n\n\n\n

The PDF uses the web console, but the rough CLI equivalent would be:<\/p>\n\n\n

oc new<\/span>-project lab2-python\noc new<\/span>-app python:3.9<\/span>~https:\/\/github.com\/openshift-instruqt\/blog-django-py --name=blog-django-py<\/span>\noc expose svc\/blog-django-py\noc get<\/span> route\n<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
Then open the route URL in your browser.<\/p>\n\n\n\n
To delete it:<\/p>\n\n\n
oc delete<\/span> all -l app=blog-django-py\noc delete<\/span> route blog-django-py\n<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
<\/p>\n\n\n\n