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Add a suffix to the image tag of the Online Boutique container images

You may want to add a suffix to the Online Boutique container image tag to target a specific version. The Kustomize Component inside this folder can help.

Add a suffix to the container image tag via Kustomize

To automate the deployment of the Online Boutique apps with a suffix added to the container imag tag, you can leverage the following variation with Kustomize.

From the kustomize/ folder at the root level of this repository, execute this command:

SUFFIX=-my-suffix
sed -i "s/CONTAINER_IMAGES_TAG_SUFFIX/$SUFFIX/g" components/container-images-tag-suffix/kustomization.yaml
kustomize edit add component components/container-images-tag-suffix

Note: this Kustomize component will add a suffix to the container image tag of the image: field in all Deployments.

This will update the kustomize/kustomization.yaml file which could be similar to:

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
- base
components:
- components/container-images-tag-suffix

You can locally render these manifests by running kubectl kustomize . | sed "s/$SUFFIX$SUFFIX/$SUFFIX/g" as well as deploying them by running kubectl kustomize . | sed "s/$SUFFIX$SUFFIX/$SUFFIX/g" | kubectl apply -f.

Note: for this variation, kubectl apply -k . alone won't work because there is a known issue currently in Kustomize where the tagSuffix is duplicated. The sed "s/$SUFFIX$SUFFIX/$SUFFIX/g" commands above are a temporary workaround.

Combine with other Kustomize Components

If you're combining this Kustomize Component with other variations, here are some considerations:

  • components/container-images-tag-suffix should be placed before components/container-images-registry
  • components/container-images-tag-suffix should be placed after components/container-images-tag

So for example here is the order respected:

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
- base
components:
- components/container-images-tag
- components/container-images-tag-suffix
- components/container-images-registry