Kubernetes Ansible Operators - Patch an Existing Kubernetes Resource - kubernetes

Question

With ansible: is it possible to patch resources with json or yaml snippets? I basically want to be able to accomplish the same thing as kubectl patch <Resource> <Name> --type='merge' -p='{"spec":{ "test":"hello }}', to append/modify resource specs.
https://docs.ansible.com/ansible/latest/modules/k8s_module.html
Is it possible to do this with the k8s ansible module? It says that if a resource already exists and "status: present" is set that it will patch it, however it isn't patching as far as I can tell
Thanks

Answer 1

Yes, you can provide just a patch and if the resource already exists it should send a strategic-merge-patch (or just a merge-patch if it's a custom resource). Here's an example playbook that creates and modifies a configmap:
---
- hosts: localhost
connection: local
gather_facts: no
vars:
cm: "{{ lookup('k8s',
api_version='v1',
kind='ConfigMap',
namespace='default',
resource_name='test') }}"
tasks:
- name: Create the ConfigMap
k8s:
definition:
apiVersion: v1
kind: ConfigMap
metadata:
name: test
namespace: default
data:
hello: world
- name: We will see the ConfigMap defined above
debug:
var: cm
- name: Add a field to the ConfigMap (this will be a PATCH request)
k8s:
definition:
apiVersion: v1
kind: ConfigMap
metadata:
name: test
namespace: default
data:
added: field
- name: The same ConfigMap as before, but with an extra field in data
debug:
var: cm
- name: Change a field in the ConfigMap (this will be a PATCH request)
k8s:
definition:
apiVersion: v1
kind: ConfigMap
metadata:
name: test
namespace: default
data:
hello: everyone
- name: The added field is unchanged, but the hello field has a new value
debug:
var: cm
- name: Delete the added field in the ConfigMap (this will be a PATCH request)
k8s:
definition:
apiVersion: v1
kind: ConfigMap
metadata:
name: test
namespace: default
data:
added: null
- name: The hello field is unchanged, but the added field is now gone
debug:
var: cm