diff --git a/deployment/pacemaker/pacemaker-baremetal-puppet.yaml b/deployment/pacemaker/pacemaker-baremetal-puppet.yaml
index 3dd1db327a..c813edff82 100644
--- a/deployment/pacemaker/pacemaker-baremetal-puppet.yaml
+++ b/deployment/pacemaker/pacemaker-baremetal-puppet.yaml
@@ -189,6 +189,25 @@ outputs:
             state: present
           when: {get_param: EnableInstanceHA}
       upgrade_tasks:
+        # Since Wallaby, Redis is not deployed by defaut anymore
+        - name: pre-check to ensure redis is removed if the service is disabled
+          when:
+            - step|int == 0
+            - '"redis" not in enabled_services|list'
+          tags:
+            - never
+            - system_upgrade
+            - system_upgrade_prepare
+          become: true
+          # prior to OS upgrade, don't assume the cluster is running,
+          # probe the CIB file directly instead
+          shell: |
+            export CIB_file=/var/lib/pacemaker/cib/cib.xml
+            if crm_resource -r redis-bundle -q &>/dev/null; then
+              echo "Redis resource present in pacemaker but disabled by default in TripleO" >&2
+              echo "Delete the resource in pacemaker or enable the redis service before upgrading" >&2
+              exit 1
+            fi
         - name: upgrade step 0
           when: step|int == 0
           block:
diff --git a/environments/docker-ha.yaml b/environments/docker-ha.yaml
index 63280ebd1d..9b641c2bf2 100644
--- a/environments/docker-ha.yaml
+++ b/environments/docker-ha.yaml
@@ -17,7 +17,6 @@ resource_registry:
   OS::TripleO::Services::MySQL: ../deployment/database/mysql-pacemaker-puppet.yaml
   OS::TripleO::Services::OsloMessagingRpc: ../deployment/rabbitmq/rabbitmq-messaging-rpc-pacemaker-puppet.yaml
   OS::TripleO::Services::OsloMessagingNotify: ../deployment/rabbitmq/rabbitmq-messaging-notify-shared-puppet.yaml
-  OS::TripleO::Services::Redis: ../deployment/database/redis-pacemaker-puppet.yaml
   OS::TripleO::Services::OVNDBs: ../deployment/ovn/ovn-dbs-pacemaker-puppet.yaml
 
 parameter_defaults:
diff --git a/environments/ha-redis.yaml b/environments/ha-redis.yaml
new file mode 100644
index 0000000000..9490789486
--- /dev/null
+++ b/environments/ha-redis.yaml
@@ -0,0 +1,6 @@
+# Environment file to deploy the Redis in a pacemaker cluster.
+# As Redis is no longer deployed by default, this file is only
+# necessary if you upgrade an existing overcloud or if you implicitely
+# rely on Redis
+resource_registry:
+  OS::TripleO::Services::Redis: ../deployment/database/redis-pacemaker-puppet.yaml
diff --git a/releasenotes/notes/redis_disabled_by_default-9992b2bae9b149cd.yaml b/releasenotes/notes/redis_disabled_by_default-9992b2bae9b149cd.yaml
new file mode 100644
index 0000000000..f19888511a
--- /dev/null
+++ b/releasenotes/notes/redis_disabled_by_default-9992b2bae9b149cd.yaml
@@ -0,0 +1,7 @@
+---
+upgrade:
+  - |
+    Redis is now disabled by default in new deployments, so existing
+    deployments have to delete the redis resource in pacemaker prior to
+    upgrade, or include the new environment file ha-redis.yaml if they
+    still implicitely depend on redis.