diff --git a/config.yaml b/config.yaml
index 8a5c8e0..17b996d 100644
--- a/config.yaml
+++ b/config.yaml
@@ -227,6 +227,16 @@ options:
       implication of this is one can set configuration values that could lead
       to memory exhaustion during run time as memory is not allocated at
       startup time.
+  pxc-strict-mode:
+    type: string
+    default: enforcing
+    description: |
+      Configures pxc_strict_mode (https://www.percona.com/doc/percona-xtradb-cluster/LATEST/features/pxc-strict-mode.html)
+      Valid values are 'disabled', 'permissive', 'enforcing' and 'master.'
+      Defaults to 'enforcing', as this is what PXC5.7 on bionic (and above)
+      does.
+      This option is ignored on PXC < 5.7 (xenial defaults to 5.6, trusty
+      defaults to 5.5)
   tuning-level:
     type: string
     default: safest
diff --git a/hooks/percona_hooks.py b/hooks/percona_hooks.py
index 25e9de5..9b0788e 100755
--- a/hooks/percona_hooks.py
+++ b/hooks/percona_hooks.py
@@ -216,7 +216,7 @@ def render_config(hosts=None):
         context['default_storage_engine'] = 'InnoDB'
         context['wsrep_log_conflicts'] = True
         context['innodb_autoinc_lock_mode'] = '2'
-        context['pxc_strict_mode'] = 'ENFORCING'
+        context['pxc_strict_mode'] = config('pxc-strict-mode')
 
     context.update(PerconaClusterHelper().parse_config())
     render(os.path.basename(config_file), config_file, context, perms=0o444)