diff --git a/airflow/providers/cncf/kubernetes/utils/pod_manager.py b/airflow/providers/cncf/kubernetes/utils/pod_manager.py
index 993ba12e313fe..46e593a2c93df 100644
--- a/airflow/providers/cncf/kubernetes/utils/pod_manager.py
+++ b/airflow/providers/cncf/kubernetes/utils/pod_manager.py
@@ -375,14 +375,20 @@ def extract_xcom(self, pod: V1Pod) -> str:
         return result
 
     def _exec_pod_command(self, resp, command: str) -> Optional[str]:
+        res = None
         if resp.is_open():
             self.log.info('Running command... %s\n', command)
             resp.write_stdin(command + '\n')
             while resp.is_open():
                 resp.update(timeout=1)
-                if resp.peek_stdout():
-                    return resp.read_stdout()
-                if resp.peek_stderr():
-                    self.log.info("stderr from command: %s", resp.read_stderr())
+                while resp.peek_stdout():
+                    res = res + resp.read_stdout() if res else resp.read_stdout()
+                error_res = None
+                while resp.peek_stderr():
+                    error_res = error_res + resp.read_stderr() if error_res else resp.read_stderr()
+                if error_res:
+                    self.log.info("stderr from command: %s", error_res)
                     break
-        return None
+                if res:
+                    return res
+        return res