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check-install-version.md

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Checking the Version of Your Knative Serving Installation

If you want to check what version of Knative serving you have installed, enter the following command:

kubectl describe deploy controller --namespace knative-serving

This will return the description for the knative-serving controller; this information contains the link to the container that was used to install Knative:

...
Pod Template:
  Labels:           app=controller
  Annotations:      sidecar.istio.io/inject=false
  Service Account:  controller
  Containers:
   controller:
   # Link to container used for Knative install
    Image:        gcr.io/knative-releases/github.com/knative/serving/cmd/controller@sha256:59abc8765d4396a3fc7cac27a932a9cc151ee66343fa5338fb7146b607c6e306
...

Copy the full gcr.io link to the container and paste it into your browser. If you are already signed in to a Google account, you'll be taken to the Google Container Registry page for that container in the Google Cloud Platform console. If you aren't already signed in, you'll need to sign in a to a Google account before you can view the container details.

On the container details page, you'll see a section titled "Container classification," and in that section is a list of tags. The versions of Knative you have installed will appear in the list as v0.1.1, or whatever verion you have installed:

Shows list of tags on container details page; v0.1.1 is the Knative version and is the first tag.