Chapter 5. Provision devices


You can provision devices with the Red Hat Edge Manager in different environments. Use the operating system image or disk image that you built for use with the Red Hat Edge Manager. Depending on your target environment, provision a physical or virtual device.

See the following sections:

5.1. Provision physical devices

When you build an International Organization for Standardization (ISO) disk image from an operating system image by using the bootc-image-builder tool, the image is similar to the RHEL ISOs available for download. However, your operating system image content is embedded in the ISO disk image.

To install the ISO disk image to a bare metal system without having access to the network, see Deploying a custom ISO container image in the Red Hat Enterprise Linux documentation.

To install the ISO disk image through the network, see Deploying an ISO bootc image over PXE boot in the Red Hat Enterprise Linux documentation.

You can provision a virtual machine on OpenShift Virtualization by using a QCoW2 container disk image that is hosted on an OCI container registry.

If your operating system image does not already contain the Red Hat Edge Manager agent enrollment configuration, you can inject the configuration through the cloud-init user data at provisioning.

5.2.1. Creating the cloud-init configuration

The cloud-init configuration customizes a virtual machine instance on its first boot, allowing you to automatically enroll it as a new agent in your Red Hat Edge Manager service.

Prerequisites

  • You installed the flightctl CLI and logged in to your Red Hat Edge Manager service instance.
  • You installed the oc CLI, used it to log in to your OpenShift cluster instance, and changed to the project in which you want to create your virtual machine.

Procedure

  1. Request a new Red Hat Edge Manager agent enrollment configuration and store it in a file called config.yaml by running the following command:

    flightctl certificate request --signer=enrollment --expiration=365d --output=embedded > config.yaml
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  2. Create a cloud configuration user data file called cloud-config.yaml that places the agent configuration in the correct location on the first boot by running the following command:

    cat <<EOF > cloud-config.yaml
    #cloud-config
    write_files:
    - path: /etc/flightctl/config.yaml
      content: $(cat config.yaml | base64 -w0)
      encoding: b64
    EOF
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  3. Create a Kubernetes Secret that contains the cloud configuration user data file:

    oc create secret generic enrollment-secret --from-file=userdata=cloud-config.yaml
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5.2.2. Creating the virtual machine

Create a virtual machine that has its primary disk populated from your QCoW2 container disk image and a cloud-init configuration drive that is populated from your enrollment secret.

Complete the following steps:

Procedure

  1. Create a file that has the VirtualMachine resource manifest by running the following command:

    cat <<EOF > my-bootc-vm.yaml
    apiVersion: kubevirt.io/v1
    kind: VirtualMachine
    metadata:
      name: my-bootc-vm
    spec:
      runStrategy: RerunOnFailure
      template:
        spec:
          domain:
            cpu:
              cores: 1
            memory:
              guest: 1024M
            devices:
              disks:
                - name: containerdisk
                  disk:
                    bus: virtio
                - name: cloudinitdisk
                  disk:
                    bus: virtio
          volumes:
            - name: containerdisk
              containerDisk:
                image: ${OCI_DISK_IMAGE_REPO}:${OCI_IMAGE_TAG}
            - name: cloudinitdisk
              cloudInitConfigDrive:
                secretRef:
                  name: enrollment-secret
    EOF
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  2. Apply the resource manifest to your cluster by running the following command:

    oc apply -f my-bootc-vm.yaml
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