zhutony / helm-convert

Convert Helm charts into Kustomize compatible package

Helm convert plugin

Charts are curated application definitions for Helm, this plugin let you convert existing charts into Kustomize compatible package.

Install

Helm plugin

$ helm plugin install https://github.com/ContainerSolutions/helm-convert

Binary without Helm

If you don't have Helm installed, you can just download the binary from the release page.

Usage

See helm convert --help for usage. Example:

# convert the stable/mongodb chart into Kustomize compatible package
helm convert --destination mongodb --name mongodb stable/mongodb

# convert chart from a url
helm convert https://s3-eu-west-1.amazonaws.com/coreos-charts/stable/prometheus-operator

# convert the stable/mongodb chart with a given values.yaml file
helm convert -f values.yaml stable/mongodb

# convert the stable/mongodb chart and override values using --set flag:
helm convert --set persistence.enabled=true stable/mongodb

Docker

You can also execute Helm convert from Docker:

$ docker run -ti containersol/helm-convert convert --help

Development

# clone the repo
$ git clone [email protected]:ContainerSolutions/helm-convert.git

# add a symlink in the Helm plugin directory targeting the repository
$ ln -s $PWD ~/.helm/plugins/helm-convert

# build the binary
$ make build

# run
$ helm convert --help

# run lint, vet and tests
$ make test-all

Features

The conversion is currently quite basic and has the following features:

• get image tags and store them in kustomization.yaml
• get common labels and store them in kustomization.yaml
• get resources and store them in kustomization.yaml
• remove helm specific labels from manifests
• remove helm specific annotations from manifests
• get namespace and store it in kustomization.yaml
• create secretGenerator based on secret resources (type Opaque and TLS)
• create secretGenerator based on secret type TLS
• create configGenerator from multiline files
• handle datasources type literal, env files and source files