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remote targets

kustomize build can be run against a url. The effect is the same as cloing the repo, checking out the specified ref, then running kustomize build against the desired directory in the local copy.

Take github.com/kubernetes-sigs/kustomize//examples/multibases?ref=v1.0.6 as an example. According to multibases demo, this kustomization contains three Pod objects with names as cluster-a-dev-myapp-pod, cluster-a-stag-myapp-pod, cluster-a-prod-myapp-pod. Running kustomize build against the url gives the same output.

target=github.com/kubernetes-sigs/kustomize//examples/multibases?ref=v1.0.6
test 3 == \
  $(kustomize build $target | grep cluster-a-.*-myapp-pod | wc -l); \
  echo $?

Overlays can be remote as well:

target=github.com/kubernetes-sigs/kustomize//examples/multibases/dev/?ref=v1.0.6
test 1 == \
  $(kustomize build $target | grep cluster-a-dev-myapp-pod | wc -l); \
  echo $?

A base can also be specified as a URL:

DEMO_HOME=$(mktemp -d)

cat <<EOF >$DEMO_HOME/kustomization.yaml
bases:
- github.com/kubernetes-sigs/kustomize//examples/multibases?ref=v1.0.6
namePrefix: remote-
EOF

Running kustomize build $DEMO_HOME and confirm the output contains three Pods and all have remote- prefix.

test 3 == \
  $(kustomize build $DEMO_HOME | grep remote-.*-myapp-pod | wc -l); \
  echo $?

URL format

The url should follow hashicorp/go-getter URL format. Here are some example urls pointing to Github repos following this convention.

  • a repo with a root level kustomization.yaml

    github.com/Liujingfang1/mysql

  • a repo with a root level kustomization.yaml on branch test

    github.com/Liujingfang1/mysql?ref=test

  • a subdirectory in a repo on version v1.0.6

    github.com/kubernetes-sigs/kustomize//examples/multibases?ref=v1.0.6

  • a subdirectory in a repo on branch repoUrl2

    github.com/Liujingfang1/kustomize//examples/helloWorld?ref=repoUrl2

  • a subdirectory in a repo on commit 7050a45134e9848fca214ad7e7007e96e5042c03

    github.com/Liujingfang1/kustomize//examples/helloWorld?ref=7050a45134e9848fca214ad7e7007e96e5042c03