diff --git a/aiopslab-applications b/aiopslab-applications
index 48e03edb..8038be6b 160000
--- a/aiopslab-applications
+++ b/aiopslab-applications
@@ -1 +1 @@
-Subproject commit 48e03edb4732468331b6963bc4644e8bae08fac1
+Subproject commit 8038be6b4989c647126f27715acc591c47133c2d
diff --git a/aiopslab/generators/fault/inject_symp.py b/aiopslab/generators/fault/inject_symp.py
index bc506bfc..b1eb23cf 100644
--- a/aiopslab/generators/fault/inject_symp.py
+++ b/aiopslab/generators/fault/inject_symp.py
@@ -28,6 +28,12 @@ def __init__(self, namespace: str):
 
         container_runtime = self.kubectl.get_container_runtime()
 
+        if container_runtime is None:
+            raise ValueError(
+                "Could not detect container runtime. "
+                "Ensure the cluster is running and at least one node is Ready."
+            )
+
         if "docker" in container_runtime:
             pass
         elif "containerd" in container_runtime:
diff --git a/aiopslab/service/kubectl.py b/aiopslab/service/kubectl.py
index fad11483..b41e2b65 100644
--- a/aiopslab/service/kubectl.py
+++ b/aiopslab/service/kubectl.py
@@ -54,15 +54,27 @@ def get_cluster_ip(self, service_name, namespace):
         service_info = self.core_v1_api.read_namespaced_service(service_name, namespace)
         return service_info.spec.cluster_ip  # type: ignore
     
-    def get_container_runtime(self):
+    def get_container_runtime(self, max_wait: int = 60, poll_interval: int = 2):
         """
             Retrieve the container runtime used by the cluster.
             If the cluster uses multiple container runtimes, the first one found will be returned.
+            
+            Args:
+                max_wait: Maximum seconds to wait for a Ready node (default: 60)
+                poll_interval: Seconds between checks (default: 2)
+            
+            Returns:
+                Container runtime version string, or None if no Ready node found within max_wait.
         """
-        for node in self.core_v1_api.list_node().items:
-            for status in node.status.conditions:
-                if status.type == "Ready" and status.status == "True":
-                    return node.status.node_info.container_runtime_version
+        elapsed = 0
+        while elapsed < max_wait:
+            for node in self.core_v1_api.list_node().items:
+                for status in node.status.conditions:
+                    if status.type == "Ready" and status.status == "True":
+                        return node.status.node_info.container_runtime_version
+            time.sleep(poll_interval)
+            elapsed += poll_interval
+        return None
 
     def get_pod_name(self, namespace, label_selector):
         """Get the name of the first pod in a namespace that matches a given label selector."""