Chapter 3. Installing Red Hat Developer Hub in an air-gapped environment with the Helm Chart

Procedure

1. Log in to your OpenShift Container Platform account using the OpenShift CLI (oc), by running the following command:

   oc login -u <user> -p <password> https://api.<hostname>:6443

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2. Log in to the OpenShift Container Platform image registry using the podman command line tool, by running the following command:

   podman login -u kubeadmin -p $(oc whoami -t) default-route-openshift-image-registry.<hostname>

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   Note

   You can run the following commands to get the full host name of the OpenShift Container Platform image registry, and then use the host name in a command to log in:

   REGISTRY_HOST=$(oc get route default-route -n openshift-image-registry --template='{{ .spec.host }}')

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   podman login -u kubeadmin -p $(oc whoami -t) $REGISTRY_HOST

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3. Log in to the registry.redhat.io in podman by running the following command:

   podman login registry.redhat.io

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   For more information about registry authentication, see Red Hat Container Registry Authentication.

4. Pull Developer Hub and PostgreSQL images from Red Hat Image registry to your workstation, by running the following commands:

   podman pull registry.redhat.io/rhdh/rhdh-hub-rhel9:1.4

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   podman pull registry.redhat.io/rhel9/postgresql-15:latest

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5. Push both images to the internal OpenShift Container Platform image registry by running the following commands:

   podman push --remove-signatures registry.redhat.io/rhdh/rhdh-hub-rhel9:1.4 default-route-openshift-image-registry.<hostname>/<project_name>/rhdh-hub-rhel9:1.4

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   podman push --remove-signatures registry.redhat.io/rhel9/postgresql-15:latest default-route-openshift-image-registry.<hostname>/<project_name>/postgresql-15:latest

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   For more information about pushing images directly to the OpenShift Container Platform image registry, see How do I push an Image directly into the OpenShift 4 registry.

   Important

   If an x509 error occurs, verify that you have installed the CA certificate used for OpenShift Container Platform routes on your system.

6. Use the following command to verify that both images are present in the internal OpenShift Container Platform registry:

   oc get imagestream -n my-rhdh-project

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7. Enable local image lookup for both images by running the following commands:

   oc set image-lookup postgresql-15

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   oc set image-lookup  rhdh-hub-rhel9

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8. Go to YAML view and update the image section for backstage and postgresql using the following values:

   Example values for Developer Hub image

   upstream:
     backstage:
       image:
         registry: ""
         repository: rhdh-hub-rhel9
         tag: latest

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   Example values for PostgreSQL image

   upstream:
     postgresql:
       image:
         registry: ""
         repository: postgresql-15
         tag: latest

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9. Install the Red Hat Developer Hub using Helm chart.