kube-yaml-sort

This is a small CLI tool to sort Kubernetes manifests. The order of sorting is:

• API Version
• Kind
• Namespace
• Name

The tool accepts multiple files as input arguments or Stdin with no arguments.

The tool will output to Stdout by default or to a file (--file -o).

This tool should work for all Kubernetes manifests that have objects that have any of the API version, kind or metadata stanzas at the top level.

The tool with remove null objects and preserves comments.

To build this tool simply run go build or go install.

Here is an example of the tool:

$ cat in
apiVersion: api-B
kind: kind-A
metadata:
  name: name-A
  namespace: name-B
---

# This is a comment
apiVersion: api-A
kind: kind-A
metadata:
  name: name-B
  namespace: name-A
---

apiVersion: api-B
kind: kind-A
metadata:
  name: name-B
  namespace: name-A
---
---
apiVersion: api-A
kind: kind-B
# This is another comment
metadata:
  name: name-A
  namespace: name-A

$ kube-yaml-sort in -o out

$ cat out
# This is a comment
apiVersion: api-A
kind: kind-A
metadata:
  name: name-B
  namespace: name-A
---
apiVersion: api-A
kind: kind-B
# This is another
# comment
metadata:
  name: name-A
  namespace: name-A
---
apiVersion: api-B
kind: kind-A
metadata:
  name: name-B
  namespace: name-A
---
apiVersion: api-B
kind: kind-A
metadata:
  name: name-A
  namespace: name-B