Add plain_http parameter to helm, helm_pull and helm_template (#934) (#949)

This is a backport of PR #934 as merged into main (775959c).
SUMMARY

This change introduces the plain_http parameter to modules that can interact with OCI registries. This in needed in cases where the OCI registry does not use SSL encryption, forcing Helm to send HTTP requests instead of HTTPS

ISSUE TYPE


Feature Pull Request

COMPONENT NAME

helm, helm_pull and helm_template
ADDITIONAL INFORMATION


This is the output when trying to use an OCI registry that is not configured to use SSL certs.

fatal: [localhost]: FAILED! => {"changed": false, "command": "/usr/local/bin/helm show chart 'oci://<http-registry>/charts/foo'", "msg": "Failure when executing Helm command. Exited 1.\nstdout: \nstderr: Error: Get \"https://<http-registry>/v2/charts/foo/tags/list\": http: server gave HTTP response to HTTPS client\n", "stderr": "Error: Get \"https://<http-registry>/v2/charts/foo/tags/list\": http: server gave HTTP response to HTTPS client\n", "stderr_lines": ["Error: Get \"https://<http-registry>/v2/charts/foo/tags/list\": http: server gave HTTP response to HTTPS client"], "stdout": "", "stdout_lines": []}

Reviewed-by: Bikouo Aubin

plugins/modules/helm_template.py

@@ -147,6 +147,13 @@ options:
           - json
           - file
     version_added: 2.4.0
+  plain_http:
+    description:
+      - Use HTTP instead of HTTPS when working with OCI registries
+      - Requires Helm >= 3.13.0
+    type: bool
+    default: False
+    version_added: 6.1.0
 """
 
 EXAMPLES = r"""
@@ -218,6 +225,9 @@ from ansible.module_utils.basic import missing_required_lib
 from ansible_collections.kubernetes.core.plugins.module_utils.helm import (
     AnsibleHelmModule,
 )
+from ansible_collections.kubernetes.core.plugins.module_utils.version import (
+    LooseVersion,
+)
 
 
 def template(
@@ -236,6 +246,7 @@ def template(
     values_files=None,
     include_crds=False,
     set_values=None,
+    plain_http=False,
 ):
     cmd += " template "
 
@@ -262,6 +273,9 @@ def template(
     if insecure_registry:
         cmd += " --insecure-skip-tls-verify"
 
+    if plain_http:
+        cmd += " --plain-http"
+
     if show_only:
         for template in show_only:
             cmd += " -s " + template
@@ -307,6 +321,7 @@ def main():
             values_files=dict(type="list", default=[], elements="str"),
             update_repo_cache=dict(type="bool", default=False),
             set_values=dict(type="list", elements="dict"),
+            plain_http=dict(type="bool", default=False),
         ),
         supports_check_mode=True,
     )
@@ -327,12 +342,22 @@ def main():
     values_files = module.params.get("values_files")
     update_repo_cache = module.params.get("update_repo_cache")
     set_values = module.params.get("set_values")
+    plain_http = module.params.get("plain_http")
 
     if not IMP_YAML:
         module.fail_json(msg=missing_required_lib("yaml"), exception=IMP_YAML_ERR)
 
     helm_cmd = module.get_helm_binary()
 
+    if plain_http:
+        helm_version = module.get_helm_version()
+        if LooseVersion(helm_version) < LooseVersion("3.13.0"):
+            module.fail_json(
+                msg="plain_http requires helm >= 3.13.0, current version is {0}".format(
+                    helm_version
+                )
+            )
+
     if update_repo_cache:
         update_cmd = helm_cmd + " repo update"
         module.run_helm_command(update_cmd)
@@ -357,6 +382,7 @@ def main():
         values_files=values_files,
         include_crds=include_crds,
         set_values=set_values_args,
+        plain_http=plain_http,
     )
 
     if not check_mode: