diff --git a/changelogs/fragments/1033-warnings-deprecations.yaml b/changelogs/fragments/1033-warnings-deprecations.yaml
new file mode 100644
index 0000000000..729cdceea1
--- /dev/null
+++ b/changelogs/fragments/1033-warnings-deprecations.yaml
@@ -0,0 +1,2 @@
+bugfixes:
+  - Replace passing ``warnings`` to ``exit_json`` with ``AnsibleModule.warn`` in the ``k8s_drain``, ``k8s_rollback.py`` and ``k8s_scale.py`` modules as it deprecated in ``ansible-core>=2.19.0`` and will be removed in ``ansible-core>=2.23.0`` (https://github.com/ansible-collections/kubernetes.core/pull/1033).
diff --git a/plugins/module_utils/copy.py b/plugins/module_utils/copy.py
index 0e19e17d2a..2dd04d1832 100644
--- a/plugins/module_utils/copy.py
+++ b/plugins/module_utils/copy.py
@@ -278,11 +278,15 @@ def copy(self):
     def run(self):
         self.files_to_copy = self.list_remote_files()
         if self.files_to_copy == []:
+            # Using warn method instead of passing warnings to exit_json as it is
+            # deprecated in ansible-core>=2.19.0
+            self._module.warn(
+                "No file found from directory '{0}' into remote Pod.".format(
+                    self.remote_path
+                )
+            )
             self.module.exit_json(
                 changed=False,
-                warning="No file found from directory '{0}' into remote Pod.".format(
-                    self.remote_path
-                ),
             )
         self.copy()
 
diff --git a/plugins/modules/k8s_drain.py b/plugins/modules/k8s_drain.py
index 0f1c290b59..2ed5ee4df3 100644
--- a/plugins/modules/k8s_drain.py
+++ b/plugins/modules/k8s_drain.py
@@ -441,7 +441,7 @@ def _revert_node_patch():
                     warnings.append(warn)
             result.append("{0} Pod(s) deleted from node.".format(number_pod))
         if warnings:
-            return dict(result=" ".join(result), warnings=warnings)
+            self._module.warn(warnings)
         return dict(result=" ".join(result))
 
     def patch_node(self, unschedulable):
diff --git a/plugins/modules/k8s_rollback.py b/plugins/modules/k8s_rollback.py
index 4fbf610491..308f99e583 100644
--- a/plugins/modules/k8s_rollback.py
+++ b/plugins/modules/k8s_rollback.py
@@ -168,7 +168,9 @@ def perform_action(svc, resource):
             module.params["kind"],
             resource["metadata"]["name"],
         )
-        result = {"changed": False, "warnings": [warn]}
+        if warn:
+            module.warn(warn)
+        result = {"changed": False}
         return result
 
     if module.params["kind"] == "Deployment":
diff --git a/plugins/modules/k8s_scale.py b/plugins/modules/k8s_scale.py
index 6e7d8c44a2..b2873c878b 100644
--- a/plugins/modules/k8s_scale.py
+++ b/plugins/modules/k8s_scale.py
@@ -243,10 +243,12 @@ def _continue_or_fail(error):
             module.fail_json(msg=error, **return_attributes)
 
     def _continue_or_exit(warn):
+        if warn:
+            module.warn(warn)
         if multiple_scale:
-            return_attributes["results"].append({"warning": warn, "changed": False})
+            return_attributes["results"].append({"changed": False})
         else:
-            module.exit_json(warning=warn, **return_attributes)
+            module.exit_json(**return_attributes)
 
     for existing in existing_items:
         if kind.lower() == "job":
diff --git a/tests/integration/targets/k8s_rollback/tasks/main.yml b/tests/integration/targets/k8s_rollback/tasks/main.yml
index 1758384c2d..92f3bf2ba2 100644
--- a/tests/integration/targets/k8s_rollback/tasks/main.yml
+++ b/tests/integration/targets/k8s_rollback/tasks/main.yml
@@ -402,12 +402,16 @@
         namespace: "{{ namespace }}"
       register: result
 
+    - name: Debug result
+      debug:
+        var: result
+
     - name: Assert warning is returned for no rollout history
       assert:
         that:
           - not result.changed
           - result.rollback_info[0].warnings is defined
-          - "'No rollout history found' in result.rollback_info[0].warnings[0]"
+          - "'No rollout history found' in result.warnings.warnings[0]"
 
     - name: Create a service for unsupported resource test
       k8s: