namely/k8s-configurator

create a set of environment-specific ConfigMap files from a single yaml

k8s-configurator

Generate environment-specific ConfigMaps from a single source Yaml.

How to install

Pre-compiled binaries:

1. On macOS via Homebrew:

   • Setup Namely's Homebrew tap
   • Install the pre-built binary brew install k8s-configurator

2. On Linux or Windows Subsystem for Linux:

   • Run curl -sL https://github.com/namely/k8s-configurator/releases/download/v0.0.3/k8s-configurator_0.0.3_linux_amd64.tar.gz | sudo tar -xzf - -C /usr/local/bin/

Compile from source:

• Ensure that the bin/ folder under the configured $GOPATH is on $PATH
• Run go get -u github.com/namely/k8s-configurator/cmd/k8s-configurator

Usage

k8s-configurator generate <source file> <env>

This will read the input yaml and generate a Kubernets V1 ConfigMap for a given env to stdout. This allows you to pass the output directly to kubectl:

k8s-configurator generate <source file> <env> | kubectl create -f -

Input File and Envs

The input yaml file is a simplified version of a ConfigMap to which makes specifying settings and overrides simple. You include the name and namespace of the ConfigMap, a default set of values, and any applicable overrides. k8s-configurator will merge the overrides with the default based on the environment specified.

Example yaml:

name: foo
namespace: system
annotations:
    strategy.spinnaker.io/versioned: false

default:
  setting1: value1
  setting2: value2

overrides:
  int:
    setting1: an-override