helm kaartcontrole kc

KaartControle (💡 a chart check, in Dutch) is a helm plugin to quickly validate chart values against defaults and detect redundant or mismatched values.

Motivation

• I just wanted to play around with helm plugins
• I haven't found a proper solution for a task I spent some time on
• Now it's focused around basic sanity check to reduce duplicates and unwanted values, could be expanded more in the future

Installation

helm plugin install https://github.com/tiulpin/kaartcontrole

Usage

# Basic usage
helm kc ./mychart values.yaml

would give

Validating Helm chart values:
==============================
Chart: ./mychart
Values file: values.yaml

Starting validation...

❌ Unexpected key: 'maxReplicaCount' is not defined in chart defaults
⚠️ Redundant value: 'resources.requests.cpu' matches default value: 100m
❌ Type mismatch for 'resources.limits.cpu': expected string, got float64

Validation completed: Issues were found.
Error: plugin "kc" exited with error

... which has some issues! Let's remove maxReplicaCount and run the check again ignoring the fields we don't care much:

# Ignore specific fields
helm kc --ignore resources --ignore health ./mychart values.yaml

Validating Helm chart values:
==============================
Chart: ./mychart
Values file: values.yaml
Ignoring fields: resources,health

Starting validation...


Validation completed: No issues found.

Options

• --ignore: Fields to ignore in validation (can be specified multiple times)