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Remove Helm 2 support and add tests for helm_cli_info

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This commit is contained in:
LucasBoisserie
2020-04-21 11:00:56 +02:00
parent 2e1b0f6817
commit 438a30bd8e
7 changed files with 112 additions and 328 deletions
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1
molecule/default/roles/helm/tasks/main.yml
View File

@@ -4,5 +4,4 @@
loop_control:
loop_var: helm_version
with_items:
- "v2.16.0"
- "v3.1.2"

14
molecule/default/roles/helm/tasks/run_test.yml
View File

@@ -12,14 +12,6 @@
- name: "Install {{ helm_version }}"
include_tasks: install.yml
- name: Check if failed when tiller is not installed
include_tasks: test_missing_tiller.yml
when: "helm_version.startswith('v2')"
- name: Install tiller
include_tasks: tiller.yml
when: "helm_version.startswith('v2')"
- name: Deploy charts
include_tasks: "tests_chart/{{ test_chart_type }}.yml"
loop_control:
@@ -29,12 +21,6 @@
- from_repository
- from_url
- name: Clean tiller
include_tasks: tiller.yml
vars:
status: absent
when: "helm_version.startswith('v2')"
- name: Clean helm install
file:
path: "{{ item }}"

16
molecule/default/roles/helm/tasks/test_missing_tiller.yml
View File

@@ -1,16 +0,0 @@
---
- name: Failed test when tiller is missing
helm_cli:
binary_path: "{{ helm_binary}}"
name: test
chart_ref: "{{ chart_test }}"
namespace: "{{ helm_namespace }}"
tiller_namespace: helm
ignore_errors: yes
register: missing_tiller
- name: Assert that tiller is missing
assert:
that:
- missing_tiller is failed
- "'could not find tiller' in missing_tiller.msg"

35
molecule/default/roles/helm/tasks/tests_chart.yml
View File

@@ -6,6 +6,18 @@
name: "{{ helm_namespace }}"
wait: true
- name: Check helm_cli_info empty
helm_cli_info:
binary_path: "{{ helm_binary}}"
name: test
namespace: "{{ helm_namespace }}"
register: empty_info
- name: "Assert that no chart are installed with helm_cli_info"
assert:
that:
- empty_info.status is undefined
- name: "Install {{ chart_test }} from {{ source }}"
helm_cli:
binary_path: "{{ helm_binary}}"
@@ -13,7 +25,6 @@
chart_ref: "{{ chart_source }}"
chart_version: "{{ chart_source_version | default(omit)}}"
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
register: install
- name: "Assert that {{ chart_test }} chart is installed from {{ source }}"
@@ -23,6 +34,19 @@
- install.status.chart == "{{ chart_test }}-{{ chart_test_version }}"
- install.status.status | lower == 'deployed'
- name: Check helm_cli_info content
helm_cli_info:
binary_path: "{{ helm_binary}}"
name: test
namespace: "{{ helm_namespace }}"
register: content_info
- name: "Assert that {{ chart_test }} is installed from {{ source }} with helm_cli_info"
assert:
that:
- content_info.status.chart == "{{ chart_test }}-{{ chart_test_version }}"
- content_info.status.status | lower == 'deployed'
- name: Check idempotency
helm_cli:
binary_path: "{{ helm_binary}}"
@@ -30,7 +54,6 @@
chart_ref: "{{ chart_source }}"
chart_version: "{{ chart_source_version | default(omit)}}"
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
register: install
- name: Assert idempotency
@@ -47,7 +70,6 @@
chart_ref: "{{ chart_source }}"
chart_version: "{{ chart_source_version | default(omit)}}"
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
values: "{{ chart_test_values }}"
register: install
@@ -66,7 +88,6 @@
chart_ref: "{{ chart_source }}"
chart_version: "{{ chart_source_version | default(omit)}}"
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
values: "{{ chart_test_values }}"
register: install
@@ -85,7 +106,6 @@
chart_ref: "{{ chart_source }}"
chart_version: "{{ chart_source_version | default(omit)}}"
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
register: install
- name: "Assert that {{ chart_test }} chart is upgraded with new var from {{ source }}"
@@ -103,7 +123,6 @@
chart_ref: "{{ chart_source }}"
chart_version: "{{ chart_source_version | default(omit)}}"
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
register: install
- name: Assert idempotency after remove vars
@@ -121,7 +140,6 @@
chart_ref: "{{ chart_source_upgrade | default(chart_source) }}"
chart_version: "{{ chart_source_version_upgrade | default(omit)}}"
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
register: install
- name: "Assert that {{ chart_test }} chart is upgraded with new version from {{ source }}"
@@ -138,7 +156,6 @@
chart_ref: "{{ chart_source_upgrade | default(chart_source) }}"
chart_version: "{{ chart_source_version_upgrade | default(omit)}}"
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
register: install
- name: Assert idempotency after upgrade
@@ -154,7 +171,6 @@
state: absent
name: test
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
register: install
- name: "Assert that {{ chart_test }} chart is remove from {{ source }}"
@@ -168,7 +184,6 @@
state: absent
name: test
namespace: "{{ helm_namespace }}"
tiller_namespace: "{{ tiller_namespace }}"
register: install
- name: Assert idempotency

22
molecule/default/roles/helm/tasks/tiller.yml
View File

@@ -1,22 +0,0 @@
---
- name: Tiller namespace
k8s:
api_version: v1
kind: Namespace
name: "{{ tiller_namespace }}"
state: "{{ status | default('present') }}"
wait: true
- name: Tiller requirements
k8s:
state: "{{ status | default('present') }}"
resource_definition: "{{ lookup('template', item) | from_yaml }}"
wait: true
with_fileglob:
- ../templates/*.yml
- name: deploy tiller
shell: "{{ helm_binary }} init --wait --service-account tiller --tiller-namespace {{ tiller_namespace }}"
environment:
ignore_errors: yes
when: "status | default('present') == 'present'"

244
plugins/modules/helm_cli.py
View File

@@ -13,15 +13,24 @@ ANSIBLE_METADATA = {'metadata_version': '1.1',
DOCUMENTATION = '''
---
module: helm_cli
short_description: Manages Kubernetes packages with the Helm package manager
description:
- Install, upgrade, delete packages with the Helm package manager.
author:
- Lucas Boisserie (@LucasBoisserie)
- Matthieu Diehr (@d-matt)
requirements:
- "helm (https://github.com/helm/helm/releases)"
- "yaml (https://pypi.org/project/PyYAML/)"
description:
- Install, upgrade, delete packages with the Helm package manager.
notes:
- For chart backed by HTTP basic authentication, you need to run `helm repo add` command
with ` --username` and `--password` before calling the module
options:
binary_path:
description:
@@ -42,18 +51,6 @@ options:
- Chart repository URL where to locate the requested chart.
required: false
type: str
chart_repo_username:
description:
- Chart repository username where to locate the requested chart.
- Required if I(chart_repo_password) is specified.
required: false
type: str
chart_repo_password:
description:
- Chart repository password where to locate the requested chart.
- Required if I(chart_repo_username) is specified.
required: false
type: str
chart_version:
description:
- Chart version to install. If this is not specified, the latest version is installed.
@@ -68,7 +65,6 @@ options:
release_namespace:
description:
- Kubernetes namespace where the chart should be installed.
- Can't be changed with helm 2.
required: true
type: str
aliases: [ namespace ]
@@ -87,17 +83,6 @@ options:
default: {}
aliases: [ values ]
type: dict
tiller_host:
description:
- Address of Tiller.
- Ignored when is helm 3.
type: str
tiller_namespace:
description:
- Namespace of Tiller.
- Ignored when is helm 3.
default: "kube-system"
type: str
update_repo_cache:
description:
- Run C(helm repo update) before the operation. Can be run as part of the package installation or as a separate step.
@@ -141,31 +126,6 @@ options:
'''
EXAMPLES = '''
# With Helm 2
- name: Deploy grafana with params version
helm_cli:
name: test
chart_ref: stable/grafana
chart_version: 3.3.8
tiller_namespace: helm
values:
replicas: 2
- name: Load Value from template
helm_cli:
name: test
chart_ref: stable/grafana
tiller_namespace: helm
values: "{{ lookup('template', 'somefile.yaml') | from_yaml }}"
- name: Remove test release and waiting suppression ending
helm_cli:
name: test
state: absent
tiller_namespace: helm
wait: true
# With Helm 3
- name: Create helm namespace HELM 3 doesn't create it automatically
k8s:
api_version: v1
@@ -173,7 +133,11 @@ EXAMPLES = '''
name: "monitoring"
wait: true
- name: Deploy latest version of Grafana chart inside monitoring namespace
# From repository
- name: Add stable chart repo
shell: "helm repo add stable https://kubernetes-charts.storage.googleapis.com"
- name: Deploy latest version of Grafana chart inside monitoring namespace with values
helm_cli:
name: test
chart_ref: stable/grafana
@@ -181,6 +145,37 @@ EXAMPLES = '''
values:
replicas: 2
- name: Deploy Grafana chart on 5.0.12 with values loaded from template
helm_cli:
name: test
chart_ref: stable/grafana
chart_version: 5.0.12
values: "{{ lookup('template', 'somefile.yaml') | from_yaml }}"
- name: Remove test release and waiting suppression ending
helm_cli:
name: test
state: absent
wait: true
# From git
- name: Git clone stable repo on HEAD
git:
repo: "http://github.com/helm/charts.git"
dest: /tmp/helm_repo
- name: Deploy Grafana chart from local path
helm_cli:
name: test
chart_ref: /tmp/helm_repo/stable/grafana
release_namespace: monitoring
# From url
- name: Deploy Grafana chart on 5.0.12 from url
helm_cli:
name: test
chart_ref: "https://kubernetes-charts.storage.googleapis.com/grafana-5.0.12.tgz"
release_namespace: monitoring
'''
RETURN = """
@@ -250,43 +245,12 @@ except ImportError:
from ansible.module_utils.basic import AnsibleModule, missing_required_lib
module = None
is_helm_2 = True
# get Helm Version
def get_helm_client_version(command):
is_helm_2_local = True
version_command = command + " version --client --short"
rc, out, err = module.run_command(version_command)
if not out.startswith('Client: v2'):
is_helm_2_local = False
# Fallback on Helm 3
version_command = command + " version --short"
rc, out, err = module.run_command(version_command)
if rc != 0:
module.fail_json(
msg="Failure when executing Helm command. Exited {0}.\nstdout: {1}\nstderr: {2}".format(rc, out, err),
command=version_command
)
elif rc != 0:
module.fail_json(
msg="Failure when executing Helm command. Exited {0}.\nstdout: {1}\nstderr: {2}".format(rc, out, err),
command=version_command
)
return is_helm_2_local
# Get Values from deployed release
def get_values(command, release_name, release_namespace):
def get_values(command, release_name):
get_command = command + " get values --output=yaml " + release_name
if not is_helm_2:
get_command += " --namespace=" + release_namespace
rc, out, err = module.run_command(get_command)
if rc != 0:
@@ -296,40 +260,24 @@ def get_values(command, release_name, release_namespace):
)
# Helm 3 return "null" string when no values are set
if not is_helm_2 and out.rstrip("\n") == "null":
if out.rstrip("\n") == "null":
return {}
else:
return yaml.safe_load(out)
# Get Release from all deployed releases
def get_release(state, release_name, release_namespace):
def get_release(state, release_name):
if state is not None:
if is_helm_2:
for release in state['Releases']:
# release = {k.lower(): v for k, v in release.items()} # NOT WORKING wit python 2.6
release_lower = dict()
for k, v in release.items():
release_lower[k.lower()] = v
release = release_lower
if release['name'] == release_name and release['namespace'] == release_namespace:
return release
else:
for release in state:
if release['name'] == release_name and release['namespace'] == release_namespace:
return release
for release in state:
if release['name'] == release_name:
return release
return None
# Get Release state from deployed release
def get_release_status(command, release_name, release_namespace):
list_command = command + " list --output=yaml "
if not is_helm_2:
list_command += " --namespace=" + release_namespace
list_command += " --filter "
list_command += release_name
def get_release_status(command, release_name):
list_command = command + " list --output=yaml --filter " + release_name
rc, out, err = module.run_command(list_command)
@@ -339,12 +287,12 @@ def get_release_status(command, release_name, release_namespace):
command=list_command
)
release = get_release(yaml.safe_load(out), release_name, release_namespace)
release = get_release(yaml.safe_load(out), release_name)
if release is None: # not install
return None
release['values'] = get_values(command, release_name, release_namespace)
release['values'] = get_values(command, release_name)
return release
@@ -363,10 +311,7 @@ def run_repo_update(command):
# Get chart info
def fetch_chart_info(command, chart_ref):
if is_helm_2:
inspect_command = command + " inspect chart " + chart_ref
else:
inspect_command = command + " show chart " + chart_ref
inspect_command = command + " show chart " + chart_ref
rc, out, err = module.run_command(inspect_command)
if rc != 0:
@@ -379,7 +324,7 @@ def fetch_chart_info(command, chart_ref):
# Install/upgrade/rollback release chart
def deploy(command, release_name, release_namespace, release_values, chart_name, wait, wait_timeout, disable_hook, force):
def deploy(command, release_name, release_values, chart_name, wait, wait_timeout, disable_hook, force):
deploy_command = command + " upgrade -i" # install/upgrade
# Always reset values to keep release_values equal to values released
@@ -407,31 +352,14 @@ def deploy(command, release_name, release_namespace, release_values, chart_name,
yaml.dump(release_values, yaml_file, default_flow_style=False)
deploy_command += " -f=" + path
deploy_command += " --namespace=" + release_namespace
deploy_command += " " + release_name
deploy_command += " " + chart_name
deploy_command += " " + release_name + " " + chart_name
return deploy_command
# Delete release chart for helm2
def delete_2(command, release_name, purge, disable_hook):
delete_command = command + " delete"
if purge:
delete_command += " --purge"
if disable_hook:
delete_command += " --no-hooks"
delete_command += " " + release_name
return delete_command
# Delete release chart for helm3
def delete_3(command, release_name, release_namespace, purge, disable_hook):
delete_command = command + " uninstall --namespace=" + release_namespace
# Delete release chart
def delete(command, release_name, purge, disable_hook):
delete_command = command + " uninstall "
if not purge:
delete_command += " --keep-history"
@@ -445,21 +373,17 @@ def delete_3(command, release_name, release_namespace, purge, disable_hook):
def main():
global module, is_helm_2
global module
module = AnsibleModule(
argument_spec=dict(
binary_path=dict(type='path'),
chart_ref=dict(type='path'),
chart_repo_url=dict(type='str'),
chart_repo_username=dict(type='str'),
chart_repo_password=dict(type='str', no_log=True),
chart_version=dict(type='str'),
release_name=dict(type='str', required=True, aliases=['name']),
release_namespace=dict(type='str', required=True, aliases=['namespace']),
release_state=dict(default='present', choices=['present', 'absent'], aliases=['state']),
release_values=dict(type='dict', default={}, aliases=['values']),
tiller_host=dict(type='str'),
tiller_namespace=dict(type='str', default='kube-system'),
update_repo_cache=dict(type='bool', default=False),
# Helm options
@@ -476,9 +400,6 @@ def main():
('release_state', 'absent', ['release_name'])
],
required_together=[
['chart_repo_username', 'chart_repo_password']
],
supports_check_mode=True,
)
@@ -490,15 +411,11 @@ def main():
bin_path = module.params.get('binary_path')
chart_ref = module.params.get('chart_ref')
chart_repo_url = module.params.get('chart_repo_url')
chart_repo_username = module.params.get('chart_repo_username')
chart_repo_password = module.params.get('chart_repo_password')
chart_version = module.params.get('chart_version')
release_name = module.params.get('release_name')
release_namespace = module.params.get('release_namespace')
release_state = module.params.get('release_state')
release_values = module.params.get('release_values')
tiller_host = module.params.get('tiller_host')
tiller_namespace = module.params.get('tiller_namespace')
update_repo_cache = module.params.get('update_repo_cache')
# Helm options
@@ -515,15 +432,6 @@ def main():
else:
helm_cmd_common = module.get_bin_path('helm', required=True)
is_helm_2 = get_helm_client_version(helm_cmd_common)
# Helm 2 need tiller, Helm 3 and higher doesn't
if is_helm_2:
if tiller_host is not None:
helm_cmd_common += " --host=" + tiller_namespace
else:
helm_cmd_common += " --tiller-namespace=" + tiller_namespace
if kube_context is not None:
helm_cmd_common += " --kube-context " + kube_context
@@ -533,16 +441,15 @@ def main():
if update_repo_cache:
run_repo_update(helm_cmd_common)
helm_cmd_common += " --namespace=" + release_namespace
# Get real/deployed release status
release_status = get_release_status(helm_cmd_common, release_name, release_namespace)
release_status = get_release_status(helm_cmd_common, release_name)
# keep helm_cmd_common for get_release_status in module_exit_json
helm_cmd = helm_cmd_common
if release_state == "absent" and release_status is not None:
if is_helm_2:
helm_cmd = delete_2(helm_cmd, release_name, purge, disable_hook)
else:
helm_cmd = delete_3(helm_cmd, release_name, release_namespace, purge, disable_hook)
helm_cmd = delete(helm_cmd, release_name, purge, disable_hook)
changed = True
elif release_state == "present":
@@ -551,27 +458,18 @@ def main():
if chart_repo_url is not None:
helm_cmd += " --repo=" + chart_repo_url
if chart_repo_username is not None and chart_repo_password is not None:
helm_cmd += " --username=" + chart_repo_username
helm_cmd += " --password=" + chart_repo_password
# Fetch chart info to have real version and real name for chart_ref from archive, folder or url
chart_info = fetch_chart_info(helm_cmd, chart_ref)
if release_status is None: # Not installed
helm_cmd = deploy(helm_cmd, release_name, release_namespace, release_values, chart_ref, wait, wait_timeout,
helm_cmd = deploy(helm_cmd, release_name, release_values, chart_ref, wait, wait_timeout,
disable_hook, False)
changed = True
elif is_helm_2 and release_namespace != release_status['namespace']:
module.fail_json(
msg="With helm2, Target Namespace can't be changed on deployed chart ! Need to destroy the release "
"and recreate it "
)
elif force or release_values != release_status['values'] \
or (chart_info['name'] + '-' + chart_info['version']) != release_status["chart"]:
helm_cmd = deploy(helm_cmd, release_name, release_namespace, release_values, chart_ref, wait, wait_timeout,
helm_cmd = deploy(helm_cmd, release_name, release_values, chart_ref, wait, wait_timeout,
disable_hook, force)
changed = True
@@ -589,7 +487,7 @@ def main():
)
module.exit_json(changed=changed, stdout=out, stderr=err,
status=get_release_status(helm_cmd_common, release_name, release_namespace), command=helm_cmd)
status=get_release_status(helm_cmd_common, release_name), command=helm_cmd)
if __name__ == '__main__':

108
plugins/modules/helm_cli_info.py
View File

@@ -40,17 +40,6 @@ options:
required: true
type: str
aliases: [ namespace ]
tiller_host:
description:
- Address of Tiller.
- Ignored when is helm 3.
type: str
tiller_namespace:
description:
- Namespace of Tiller.
- Ignored when is helm 3.
default: "kube-system"
type: str
#Helm options
kube_context:
@@ -65,13 +54,6 @@ options:
'''
EXAMPLES = '''
# With Helm 2
- name: Get grafana deployment
helm_cli_info:
name: test
tiller_namespace: helm
# With Helm 3
- name: Deploy latest version of Grafana chart inside monitoring namespace
helm_cli_info:
name: test
@@ -130,43 +112,12 @@ except ImportError:
from ansible.module_utils.basic import AnsibleModule, missing_required_lib
module = None
is_helm_2 = True
# get Helm Version
def get_helm_client_version(command):
is_helm_2_local = True
version_command = command + " version --client --short"
rc, out, err = module.run_command(version_command)
if not out.startswith('Client: v2'):
is_helm_2_local = False
# Fallback on Helm 3
version_command = command + " version --short"
rc, out, err = module.run_command(version_command)
if rc != 0:
module.fail_json(
msg="Failure when executing Helm command. Exited {0}.\nstdout: {1}\nstderr: {2}".format(rc, out, err),
command=version_command
)
elif rc != 0:
module.fail_json(
msg="Failure when executing Helm command. Exited {0}.\nstdout: {1}\nstderr: {2}".format(rc, out, err),
command=version_command
)
return is_helm_2_local
# Get Values from deployed release
def get_values(command, release_name, release_namespace):
def get_values(command, release_name):
get_command = command + " get values --output=yaml " + release_name
if not is_helm_2:
get_command += " --namespace=" + release_namespace
rc, out, err = module.run_command(get_command)
if rc != 0:
@@ -176,40 +127,24 @@ def get_values(command, release_name, release_namespace):
)
# Helm 3 return "null" string when no values are set
if not is_helm_2 and out.rstrip("\n") == "null":
return yaml.safe_load('{}')
if out.rstrip("\n") == "null":
return {}
else:
return yaml.safe_load(out)
# Get Release from all deployed releases
def get_release(state, release_name, release_namespace):
def get_release(state, release_name):
if state is not None:
if is_helm_2:
for release in state['Releases']:
# release = {k.lower(): v for k, v in release.items()} # NOT WORKING wit python 2.6
release_lower = dict()
for k, v in release.items():
release_lower[k.lower()] = v
release = release_lower
if release['name'] == release_name and release['namespace'] == release_namespace:
return release
else:
for release in state:
if release['name'] == release_name and release['namespace'] == release_namespace:
return release
for release in state:
if release['name'] == release_name:
return release
return None
# Get Release state from deployed release
def get_release_status(command, release_name, release_namespace):
list_command = command + " list --output=yaml "
if not is_helm_2:
list_command += " --namespace=" + release_namespace
list_command += " --filter "
list_command += release_name
def get_release_status(command, release_name):
list_command = command + " list --output=yaml --filter " + release_name
rc, out, err = module.run_command(list_command)
@@ -219,26 +154,24 @@ def get_release_status(command, release_name, release_namespace):
command=list_command
)
release = get_release(yaml.safe_load(out), release_name, release_namespace)
release = get_release(yaml.safe_load(out), release_name)
if release is None: # not install
return None
release['values'] = get_values(command, release_name, release_namespace)
release['values'] = get_values(command, release_name)
return release
def main():
global module, is_helm_2
global module
module = AnsibleModule(
argument_spec=dict(
binary_path=dict(type='path'),
release_name=dict(type='str', required=True, aliases=['name']),
release_namespace=dict(type='str', required=True, aliases=['namespace']),
tiller_host=dict(type='str'),
tiller_namespace=dict(type='str', default='kube-system'),
# Helm options
kube_context=dict(type='str'),
@@ -253,8 +186,6 @@ def main():
bin_path = module.params.get('binary_path')
release_name = module.params.get('release_name')
release_namespace = module.params.get('release_namespace')
tiller_host = module.params.get('tiller_host')
tiller_namespace = module.params.get('tiller_namespace')
# Helm options
kube_context = module.params.get('kube_context')
@@ -265,23 +196,16 @@ def main():
else:
helm_cmd_common = module.get_bin_path('helm', required=True)
is_helm_2 = get_helm_client_version(helm_cmd_common)
# Helm 2 need tiller, Helm 3 and higher doesn't
if is_helm_2:
if tiller_host is not None:
helm_cmd_common += " --host=" + tiller_namespace
else:
helm_cmd_common += " --tiller-namespace=" + tiller_namespace
if kube_context is not None:
helm_cmd_common += " --kube-context " + kube_context
if kubeconfig_path is not None:
helm_cmd_common += " --kubeconfig " + kubeconfig_path
# Get real/deployed release status
release_status = get_release_status(helm_cmd_common, release_name, release_namespace)
helm_cmd_common += " --namespace=" + release_namespace
release_status = get_release_status(helm_cmd_common, release_name)
if release_status is not None:
module.exit_json(changed=False, status=release_status)
else: