helm-files-get

A project see how helm mounts local file content in a pod.

The chart templates will create a secret with content of a local file ./assets/realm.json. It will use that secret to add a pod volumeMount at /tmp/realm.json.

The intent of this project is to see if that local file can be overridden by using the chart remotely and without modifying the repo file itself.

Playing with local chart

Helm chart validation

helm lint ./chart
helm template --debug ./chart

Helm deploy

helm install app ./chart

Confirm file is mounted

k exec -it myapp -- /bin/bash
cat /tmp/realm.json

Publishing chart to use "remotely"

Ref to use the "GitHub pages" feature to behave as a file server: https://github.com/technosophos/tscharts/tree/master

Package and publish chart

helm package ./chart
mv helm-file-get-0.1.0.tgz docs
helm repo index docs --url https://thecodebeneath.github.io/helm-files-get
git add .
git commit -m "New chart index"
git push

One-timer to add GitHub page as a helm repo.

This makes the ./docs directory the repo url.

helm repo add codebeneath https://thecodebeneath.github.io/helm-files-get

Use the repo to pull the remote chart

helm repo update codebeneath

Try a default install

cd install-from-repo
helm install myapp codebeneath/helm-file-get

this uses the chart packaged assets/realm.json file (the default)

Try to override using a file from local filesystem

helm install myapp codebeneath/helm-file-get --values override-values.yaml --version 0.2.0

this uses the chart packaged assets/junk.json file (from the override-values file).

it does NOT take the local directory assets/junk.json file as I hoped.

bummer.

thecodebeneath / helm-files-get