Refer above article for learning on how to install crc openshift on your laptop/desktop

Quick steps –

$ oc new-project ruby-hello-world --description="Ruby Hello World Project" --display-name="Ruby Hello World"
$ oc projects
$ oc project ruby-hello-world
$ oc new-app https://github.com/openshift/ruby-hello-world.git
$ oc get pods
$ oc get all
$ oc projects

Login as developer in openshift

[prayag@openshift ~]$ oc login -u developer
Logged into "https://api.crc.testing:6443" as "developer" using existing credentials.


You don't have any projects. You can try to create a new project, by running


    oc new-project <projectname>

Create new ruby hello world project

[prayag@openshift ~]$ oc new-project ruby-hello-world --description="Ruby Hello World Project" --display-name="Ruby Hello World"

Now using project "ruby-hello-world" on server "https://api.crc.testing:6443".


You can add applications to this project with the 'new-app' command. For example, try:


    oc new-app rails-postgresql-example


to build a new example application in Ruby. Or use kubectl to deploy a simple Kubernetes application:


    kubectl create deployment hello-node --image=k8s.gcr.io/e2e-test-images/agnhost:2.33 -- /agnhost serve-hostname


[prayag@openshift ~]$

Create new app for ruby using github url – https://github.com/openshift/ruby-hello-world.git

[prayag@openshift ~]$ oc project
You have one project on this server: "Ruby Hello World (ruby-hello-world)".


Using project "ruby-hello-world" on server "https://api.crc.testing:6443".

[prayag@openshift ~]$ oc new-app https://github.com/openshift/ruby-hello-world.git
--> Found container image 88b6cf4 (2 weeks old) from registry.access.redhat.com for "registry.access.redhat.com/ubi8/ruby-27"


    Ruby 2.7
    --------
    Ruby 2.7 available as container is a base platform for building and running various Ruby 2.7 applications and frameworks. Ruby is the interpreted scripting language for quick and easy object-oriented programming. It has many features to process text files and to do system management tasks (as in Perl). It is simple, straight-forward, and extensible.


    Tags: builder, ruby, ruby27, ruby-27


    * An image stream tag will be created as "ruby-27:latest" that will track the source image
    * A Docker build using source code from https://github.com/openshift/ruby-hello-world.git will be created
      * The resulting image will be pushed to image stream tag "ruby-hello-world:latest"
      * Every time "ruby-27:latest" changes a new build will be triggered


--> Creating resources ...
    imagestream.image.openshift.io "ruby-27" created
    imagestream.image.openshift.io "ruby-hello-world" created
    buildconfig.build.openshift.io "ruby-hello-world" created
    deployment.apps "ruby-hello-world" created
    service "ruby-hello-world" created
--> Success
    Build scheduled, use 'oc logs -f buildconfig/ruby-hello-world' 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/ruby-hello-world'
    Run 'oc status' to view your app.
[prayag@openshift ~]$

List the pod

[prayag@openshift ~]$ oc get pod
NAME                                READY   STATUS      RESTARTS   AGE
ruby-hello-world-1-build            0/1     Completed   0          5m50s
ruby-hello-world-598f6d995b-567rn   1/1     Running     0          108s

[prayag@openshift ~]$ oc get all
NAME                                    READY   STATUS      RESTARTS   AGE
pod/ruby-hello-world-1-build            0/1     Completed   0          5m55s
pod/ruby-hello-world-598f6d995b-567rn   1/1     Running     0          113s


NAME                       TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)    AGE
service/ruby-hello-world   ClusterIP   10.217.5.1   <none>        8080/TCP   5m57s


NAME                               READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/ruby-hello-world   1/1     1            1           5m57s


NAME                                          DESIRED   CURRENT   READY   AGE
replicaset.apps/ruby-hello-world-598f6d995b   1         1         1       114s
replicaset.apps/ruby-hello-world-77966dc655   0         0         0       5m57s


NAME                                              TYPE     FROM   LATEST
buildconfig.build.openshift.io/ruby-hello-world   Docker   Git    1


NAME                                          TYPE     FROM          STATUS     STARTED         DURATION
build.build.openshift.io/ruby-hello-world-1   Docker   Git@0c607af   Complete   5 minutes ago   4m5s


NAME                                              IMAGE REPOSITORY                                                                            TAGS     UPDATED
imagestream.image.openshift.io/ruby-27            default-route-openshift-image-registry.apps-crc.testing/ruby-hello-world/ruby-27            latest   5 minutes ago
imagestream.image.openshift.io/ruby-hello-world   default-route-openshift-image-registry.apps-crc.testing/ruby-hello-world/ruby-hello-world   latest   About a minute ago
[prayag@openshift ~]$

Get the project details

[prayag@openshift ~]$ oc get projects
NAME               DISPLAY NAME       STATUS
ruby-hello-world   Ruby Hello World   Active
[prayag@openshift ~]$

I hope you found this article to be useful in some way. I’ll be back with some more interesting new DevOps articles soon.