community.kubernetes.helm: release_values makes ansible always show changed state

[SpikePy]

SUMMARY

When using values_files: /tmp/{{ role_name }}/values_rabbitmq.yml in the new helm module ansible always shows a changed state after running it (even though the file has the same content), but if I use
release_values: "{{ lookup('template', 'values_rabbitmq.yml') | from_yaml }}" with the same content it just shows ok and only shows change when something actually changed in the given values.

ISSUE TYPE

• Bug Report

COMPONENT NAME

community.kubernetes.helm

ANSIBLE VERSION

ansible 2.10.2
  config file = None
  configured module search path = ['/root/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.9/site-packages/ansible
  executable location = /usr/local/bin/ansible
  python version = 3.9.0 (default, Oct 13 2020, 20:25:37) [GCC 8.3.0]

CONFIGURATION

DEFAULT_LOAD_CALLBACK_PLUGINS(env: ANSIBLE_LOAD_CALLBACK_PLUGINS) = True
DEFAULT_STDOUT_CALLBACK(env: ANSIBLE_STDOUT_CALLBACK) = yaml

OS / ENVIRONMENT

Linux work 5.8.0-3-amd64 #1 SMP Debian 5.8.14-1 (2020-10-10) x86_64 GNU/Linux

STEPS TO REPRODUCE

# rabbitmq
- name: Create temporary directory for values
  file:
    path: /tmp/{{ role_name }}
    state: directory
  changed_when: false

- name: Write configs to temporary file
  template:
    src: "{{ item }}"
    dest: /tmp/{{ role_name }}/{{ item | basename | regex_replace('\.j2$','') }}
  with_fileglob:
    - ../templates/*.j2
  changed_when: false

- name: Install rabbitmq cluster
  community.kubernetes.helm:
    chart_repo_url: https://charts.bitnami.com/bitnami
    chart_ref: rabbitmq
    release_namespace: "{{ rabbitmq_namespace }}"
    name: "{{ rabbitmq_install_name }}"
    chart_version: "{{ rabbitmq_helm_version }}"
    values_files: /tmp/{{ role_name }}/values_rabbitmq.yml
    #release_values: "{{ lookup('template', 'values_rabbitmq.yml.j2') | from_yaml }}"

EXPECTED RESULTS

Ansible should show a changed state only if there were changes in the configuration-/values-file

ACTUAL RESULTS

ansible always shows changed state

ansible-playbook --vault-password-file=/misc/vault_key /project/infrastructure/deploy.yml -i /project/infrastructure/inventory --extra-vars stage=$stage --tags k8s_rabbitmq

PLAY [azure] ********************************************************************************************************************************************************************************************************

PLAY [k8s_sbx] ******************************************************************************************************************************************************************************************************

TASK [azure_get_kubeconfig : Preparing kubectl directory] ***********************************************************************************************************************************************************
ok: [sbx]

TASK [azure_get_kubeconfig : get kubeconfig] ************************************************************************************************************************************************************************
[WARNING]: Azure API profile latest does not define an entry for ContainerServiceClient
ok: [sbx]

TASK [azure_get_kubeconfig : Save kube_config from AKS-Information to ~/.kube/config] *******************************************************************************************************************************
ok: [sbx]

TASK [k8s_rabbitmq : Create temporary directory for values] *********************************************************************************************************************************************************
ok: [sbx]

TASK [k8s_rabbitmq : Write configs to temporary file] ***************************************************************************************************************************************************************
ok: [sbx] => (item=/root/.ansible/roles/k8s_rabbitmq/tasks/../templates/values_rabbitmq.yml.j2)
ok: [sbx] => (item=/root/.ansible/roles/k8s_rabbitmq/tasks/../templates/rabbitmq_credentials_secret.yml.j2)

TASK [k8s_rabbitmq : Install rabbitmq cluster] **********************************************************************************************************************************************************************
changed: [sbx]

TASK [k8s_rabbitmq : Deploy rabbitmq credentials-secret] ************************************************************************************************************************************************************
ok: [sbx]

PLAY RECAP **********************************************************************************************************************************************************************************************************
sbx                        : ok=7    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

[goneri]

Hi @SpikePy, thank for reporting this.

Helm provides a plugin called helm-diff that would be handy to address this problem. However since it's a plugin, we're not sure if it's a good idea to rely on it. On the other side, we don't feel like it's a good idea to rewrite it internally just for this case. @fabianvf how do you feel about that?

[Akasurde]

resolved_by_pr #332

[Akasurde]

@SpikePy Could you please check if #332 works for you and let us know? Thanks.

[SpikePy]

@Akasurde Just had time and the opportunity to test it and it worked like a charm. showed changed state if i changed the charts version tag and if I re-rolled it with the same module parameters without any changes it shows "ok" 👍