diff --git a/roles/training/tasks/main.yml b/roles/training/tasks/main.yml
index 523e785..f739161 100644
--- a/roles/training/tasks/main.yml
+++ b/roles/training/tasks/main.yml
@@ -46,7 +46,9 @@
       mode: '0644'
       # Do not overwrite an existing file even if it has been
       # modified.
-      force: no
+      force: "{{ force_update_stack_file }}"
+    tags:
+      - update_stack_file
 
   - name: Copy structure LDIF input file
     copy:
diff --git a/roles/training/vars/main.yml b/roles/training/vars/main.yml
index 0335e14..e368616 100644
--- a/roles/training/vars/main.yml
+++ b/roles/training/vars/main.yml
@@ -1,4 +1,5 @@
 ---
+   force_update_stack_file: no
    olc_root_pw: "{CRYPT}$6$rounds=5000$RMNH6IpoChSTxPzx$r9c67vaf.vP7HExQTFeR.7kioNEWU5/BiJHfs/.3xjcYmJ9R594IIRpey.IyENS5iBdTnpfBOvOYqS/cCM/8.0"
    olc_root_dn_password: !vault |
           $ANSIBLE_VAULT;1.1;AES256
diff --git a/training_nodes.yml b/training_nodes.yml
index c8cb600..19080e6 100644
--- a/training_nodes.yml
+++ b/training_nodes.yml
@@ -97,7 +97,7 @@
         health_check_port: traffic-port
         health_check_protocol: http
         healthy_threshold_count: 3
-        successful_response_codes: "200"
+        successful_response_codes: "200,301,302"
         unhealthy_threshold_count: 5
         targets:
           - Id: "{{ item.tagged_instances[0].id }}"