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Helm Diff Plugin

This is a Helm plugin giving your a preview of what a helm upgrade would change. It basically generates a diff between the latest deployed version of a release and a helm upgrade --debug --dry-run

Usage

$ helm diff [flags] RELEASE CHART

Flags:

      --set string          set values on the command line. See 'helm install -h'
  -f, --values valueFiles   specify one or more YAML files of values (default [])

Install

Using Helm plugin manager (> 2.3.x)

helm plugin install https://github.com/databus23/helm-diff

Pre Helm 2.3.0 Installation

Pick a release tarball from the releases page.

Unpack the tarball in your helm plugins directory ($(helm home)/plugins).

E.g.

curl -L $TARBALL_URL | tar -C $(helm home)/plugins -xzv

Build

Clone the repository into your $GOPATH and then build it.

$ mkdir -p $GOPATH/src/github.com/databus23/
$ cd $GOPATH/src/github.com/databus23/
$ git clone https://github.com/databus23/helm-diff.git
$ cd helm-diff
$ make install

The above will install this plugin into your $HELM_HOME/plugins directory.

Prerequisites

  • You need to have Go installed. Make sure to set $GOPATH
  • If you don't have Glide installed, this will install it into $GOPATH/bin for you.