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Building oVirt Docker Images

This document provides instructions for building local versions of the Docker images that are used by an ovirt-containers deployment. Unless you need to make changes you can skip these instructions. By default, deployment will pull all of the required images from DockerHub.

Build

Start working on your development machine within an appropriate checkout of this repository. If you are using minishift, set up your environment to use the minishift docker instance:

eval $( minishift docker-env )

To automatically rebuild all required Docker images:

make build

Manual build instructions

Check the openshift manifest files (os-manifests/*/*-deployment.yaml) to determine which docker images you need. At the time of this writing we require the following images:

  • ovirt/vdsc-syslog:master
  • ovirt/vdsc:master
  • ovirt/engine-spice-proxy:master
  • ovirt/engine-database:master
  • ovirt/engine:master

Look in the Dockerfile associated with each image (eg. image-specifications/vdsc/Dockerfile) and discover that the images depend on the base layer ovirt/base:master.

We are not concerned with locally building images outside of the ovirt namespace (eg. CentOS) and will allow these to be pulled from DockerHub.

Build the images (make sure to tag each one properly using '-t'):

docker build -t ovirt/base:master image-specifications/base
docker build -t ovirt/vdsc-syslog:master image-specifications/vdsc-syslog
docker build -t ovirt/vdsc:master image-specifications/vdsc
docker build -t ovirt/engine-spice-proxy:master image-specifications/engine-spice-proxy
docker build -t ovirt/engine-database:master image-specifications/engine-database
docker build -t ovirt/engine:master image-specifications/engine

After building make sure the updated images are available to the Openshift docker instance. Unless you targeted the minishift docker environment as described above you may need to transfer the images. This can be done with docker save/load:

docker save ovirt/vdsc:master | ssh <oc node> 'docker load'

Install

After making changes to the docker images or openshift deployment files you may want to replace an existing deployment. Use a similar command to delete the application as you used to create it, for example:

oc delete -f os-manifests -R

Then create the application again to use the updated images and manifests:

oc create -f os-manifests -R