openshift-docs/modules/getting-started-cli-deploying-python-app.adoc

// Module included in the following assemblies:
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// * tutorials/dev-app-cli.adoc

:_mod-docs-content-type: PROCEDURE
[id="getting-started-cli-deploying-python-app_{context}"]
= Deploying the back-end application

[role="_abstract"]
Deploy the back-end application that provides the service that queries the database to return the national park data required for your application.

The following procedure deploys `nationalparks`, which is the back-end component for the `national-parks-app` application. The Python application performs 2D geo-spatial queries against a MongoDB database to locate and return map coordinates of all national parks in the world.

.Prerequisites

* You have deployed the `parksmap` front-end application.

.Procedure

* Create the `nationalparks` back-end application by running the following command:
+
[source,terminal]
----
$ oc new-app python~https://github.com/openshift-roadshow/nationalparks-py.git --name nationalparks -l 'app=national-parks-app,component=nationalparks,role=backend,app.kubernetes.io/part-of=national-parks-app,app.kubernetes.io/name=python' --allow-missing-images=true
----
+
.Example output
[source,text]
----
--> Found image 9531750 (2 weeks old) in image stream "openshift/python" under tag "3.11-ubi8" for "python"

    Python 3.11
    -----------
...

--> Creating resources with label app=national-parks-app,app.kubernetes.io/name=python,app.kubernetes.io/part-of=national-parks-app,component=nationalparks,role=backend ...
    imagestream.image.openshift.io "nationalparks" created
    buildconfig.build.openshift.io "nationalparks" created
    deployment.apps "nationalparks" created
    service "nationalparks" created
--> Success
    Build scheduled, use 'oc logs -f buildconfig/nationalparks' to track its progress.
    Application is not exposed. You can expose services to the outside world by executing one or more of the commands below:
     'oc expose service/nationalparks'
    Run 'oc status' to view your app.
----