CODEWITHSUNDEEP
openshiftopenshift-origin
Phil
Phil

Reputation: 529

Openshift: Automatically update upstream images

In Openshift we have a BuildConfig which depends on an image from hub.docker.com (ubuntu:xenial).

strategy:
  type: Docker
  dockerStrategy:
    from:
      kind: ImageStreamTag
      namespace: <my namespace>
      name: 'ubuntu:xenial'
    forcePull: true

For this I created an ImageStream with the following config:

apiVersion: v1
kind: ImageStream
metadata:
  name: ubuntu
  namespace: <my namespace>
spec:
  dockerImageRepository: registry.hub.docker.com/library/ubuntu

I now would like to run my BuildConfig whenever the upstream Ubuntu image changes. I can update the Ubuntu image manually by running oc import-image ubuntu.

Is there another way to automatically update the image other than create an external cron job?

Versions

OpenShift Master: v1.3.1
Kubernetes Master: v1.3.0+52492b4

Upvotes: 4

Views: 3416

Answers (2)

Graham Dumpleton
Graham Dumpleton

Reputation: 58523

Look at scheduled field of the importPolicy associated with the image stream tag.

$ oc explain is.spec.tags.importPolicy
RESOURCE: importPolicy <Object>

DESCRIPTION:
     Import is information that controls how images may be imported by the
     server.

    TagImportPolicy describes the tag import policy

FIELDS:
   insecure <boolean>
     Insecure is true if the server may bypass certificate verification or
     connect directly over HTTP during image import.

   scheduled    <boolean>
     Scheduled indicates to the server that this tag should be periodically
     checked to ensure it is up to date, and imported

There is a mention of it in:

Upvotes: 5

&#193;lvaro P&#233;rez Soria
&#193;lvaro P&#233;rez Soria

Reputation: 1543

As stated in documentation:

"Querying external registries to synchronize tag and image metadata is not currently an automated process. To resynchronize manually, run oc import-image . Within a short amount of time, OpenShift will communicate with the external registry to get up to date information about the Docker image repository associated with the image stream"

https://docs.openshift.com/enterprise/3.1/architecture/infrastructure_components/image_registry.html#third-party-registries

You can always take advantage of DockerHub Webhooks (they are triggered when an image is built in, or a new tag added):

https://docs.docker.com/docker-hub/webhooks/

Upvotes: 0

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