cnv-basic-image

#Create an Container Image with centos8 qcow2 

oc new-build --name centos8 --build-arg image_url=https://cloud.centos.org/centos/8/x86_64/images/CentOS-8-GenericCloud-8.1.1911-20200113.3.x86_64.qcow2 https://github.com/openshift-examples/cnv-container-disk-build.git

#Create Openshift Template

cat > apache-template.yaml << EOF
# Source: dist/templates/centos8-server-tiny.yaml
apiVersion: template.openshift.io/v1
kind: Template
metadata:
  name: apache-centos8-server-tiny
  annotations:
    openshift.io/display-name: "Demo CNV VM - Apache webserver"
    description: >-
      This template can be used to create a VM suitable for
      CentOS 8 and newer.
      The template assumes that a Container Image is available which is providing the
      necessary CentOS disk image.
    tags: "kubevirt,virtualmachine,linux,centos"

    iconClass: "icon-centos"
    openshift.io/provider-display-name: "KubeVirt"
    openshift.io/documentation-url: "https://github.com/kubevirt/common-templates"
    openshift.io/support-url: "https://github.com/kubevirt/common-templates/issues"
    template.openshift.io/bindable: "true"

    template.kubevirt.io/version: v1alpha1
    defaults.template.kubevirt.io/disk: rootdisk
    template.kubevirt.io/editable: |
      /objects[0].spec.template.spec.domain.cpu.sockets
      /objects[0].spec.template.spec.domain.cpu.cores
      /objects[0].spec.template.spec.domain.cpu.threads
      /objects[0].spec.template.spec.domain.resources.requests.memory
      /objects[0].spec.template.spec.domain.devices.disks
      /objects[0].spec.template.spec.volumes
      /objects[0].spec.template.spec.networks
    name.os.template.kubevirt.io/centos8.0: CentOS 8.0

  labels:
    os.template.kubevirt.io/centos8.0: "true"
    workload.template.kubevirt.io/server: "true"
    flavor.template.kubevirt.io/tiny: "true"
    template.kubevirt.io/type: "base"

objects:

- kind: Route
  apiVersion: route.openshift.io/v1
  metadata:
    name: ${NAME}
  spec:
    to:
      kind: Service
      name: ${NAME}
      weight: 100
    port:
      targetPort: 80
    wildcardPolicy: None

- kind: Service
  apiVersion: v1
  metadata:
    name: ${NAME}
  spec:
    ports:
      - protocol: TCP
        port: 80
        targetPort: 80
    selector:
      vm.kubevirt.io/name: ${NAME}
    type: ClusterIP
    sessionAffinity: None

- apiVersion: kubevirt.io/v1alpha3
  kind: VirtualMachine
  metadata:
    name: ${NAME}
    labels:
      vm.kubevirt.io/template: apache-centos8-server-tiny
      vm.kubevirt.io/name: ${NAME}
      app: ${NAME}
  spec:
    running: true
    template:
      metadata:
        labels:
          kubevirt.io/domain: ${NAME}
          vm.kubevirt.io/name: ${NAME}
          kubevirt.io/size: tiny
      spec:
        domain:

          cpu:
            sockets: 1
            cores: 1
            threads: 1
          resources:
            requests:
              memory: 1G
          devices:
            rng: {}
            disks:
            - disk:
                bus: virtio
              name: rootdisk
            - disk:
                bus: virtio
              name: cloudinitdisk
            interfaces:
            - bridge: {}
              name: default
        terminationGracePeriodSeconds: 0
        networks:
        - name: default
          pod: {}
        volumes:
        - containerDisk:
            image: 'image-registry.openshift-image-registry.svc:5000/kubevirt/centos8'
          name: rootdisk
        - cloudInitNoCloud:
            userData: |-
              #cloud-config
              password: centos
              chpasswd: { expire: False }
              packages:
                - httpd
                - mod_php
                - php-mbstring
                - php-mysqlnd
                - php-json
                - php-xml
                - libxslt
                - mariadb
              runcmd:
                - [ systemctl, enable, httpd.service ]
                - [ systemctl, start, httpd.service ]
                - curl https://wordpress.org/latest.tar.gz --output /tmp/wordpress.tar.gz
                - tar xf /tmp/wordpress.tar.gz -C /var/www/html/
                - chown -R apache:apache /var/www/html/wordpress
                - chcon -t httpd_sys_rw_content_t /var/www/html/wordpress -R
                - setsebool -P httpd_can_network_connect_db on
          name: cloudinitdisk
parameters:
- description: VM name
  from: 'centos8-[a-z0-9]{16}'
  generate: expression
  name: NAME
  required: true
EOF

oc apply -f apache-template.yaml

Using the console ( mode developer ) - create a application based on the catalog ( Search for demo )