yaml-merger-py

Python script to merge YAML files together

this script could merge partial yaml files into bigger ones specially to deep merge patial values.yaml helm files (used in helm install --values) into complete values files (used in helm install -f) with best effort to preserve comments, formatting, and order of items.

Example:

values.yaml:

# Default values for kube-prometheus-stack.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.

## Provide a name in place of kube-prometheus-stack for `app:` labels
##
nameOverride: ""

## Override the deployment namespace
##
namespaceOverride: ""

## Provide a k8s version to auto dashboard import script example: kubeTargetVersionOverride: 1.16.6
##
kubeTargetVersionOverride: ""
.
.
.

values-partial.yaml:

namespaceOverride: "monitoring"

Command:

python yaml-merger.py values.yaml values-partial.yaml > values-merged.yaml

values-merged.yaml:

# Default values for kube-prometheus-stack.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.

## Provide a name in place of kube-prometheus-stack for `app:` labels
##
nameOverride: ""

## Override the deployment namespace
##
namespaceOverride: "monitoring"

## Provide a k8s version to auto dashboard import script example: kubeTargetVersionOverride: 1.16.6
##
kubeTargetVersionOverride: ""

## Allow kubeVersion to be overridden while creating the ingress
##
kubeVersionOverride: ""
.
.
.

Requirements:

pip install ruamel.yaml pip install mergedeep