Kube Split Yaml

Simple tool to split one file with kubernetes manifests into separated ones.

Use cases

Useful when you are using kustomize and you want to evaluate generated manifests after kustomize build . with OPA.

$ kustomize build <path_to_kustomization> >> build.yaml
$ kube-split-yaml split --input build.yaml --output-dir manifests
$ for i in $(ls manifests); do opa eval -d <validation_rego> -i manifests/$i data.kubernetes.admission.deny --format=pretty; done

Installation and usage

1. Install

   $ go get -v github.com/borisputerka/kube-split-yaml
   

2. Use plugin

   $ kube-split-yaml split --input <input_file> --output-dir <output_dir>
   

Flags reference

By default kube-split-yaml splits each kubernetes resource from input file into separated file in format:

{{.kind}}-{{.apiVersion}}-{{.metadata.namespace}}-{{.metadata.name}}.yaml

Here are flags that can be used with split command:

Flag	Description	Default
input	Input file to split. Can be replaced with stdin	""
output-dir	Output directory where divided yamls will be written	split_yaml
group-by-kind	Group manifests based on their kind (in format <.kind>.yaml)	false