diff --git a/tests/basic_deployment.py b/tests/basic_deployment.py
index 0b9ed85..d004416 100644
--- a/tests/basic_deployment.py
+++ b/tests/basic_deployment.py
@@ -58,7 +58,7 @@ class SwiftProxyBasicDeployment(OpenStackAmuletDeployment):
            """
         this_service = {'name': 'swift-proxy'}
         other_services = [
-            {'name': 'percona-cluster', 'constraints': {'mem': '3072M'}},
+            {'name': 'percona-cluster'},
             {'name': 'keystone'},
             {'name': 'glance'},
             {'name': 'swift-storage'}
@@ -95,10 +95,8 @@ class SwiftProxyBasicDeployment(OpenStackAmuletDeployment):
             'overwrite': 'true'
         }
         pxc_config = {
-            'dataset-size': '25%',
+            'innodb-buffer-pool-size': '256M',
             'max-connections': 1000,
-            'root-password': 'ChangeMe123',
-            'sst-password': 'ChangeMe123',
         }
         configs = {
             'keystone': keystone_config,
diff --git a/tests/gate-basic-artful-pike b/tests/gate-basic-artful-pike
index 97c0d33..3552533 100644
--- a/tests/gate-basic-artful-pike
+++ b/tests/gate-basic-artful-pike
@@ -21,3 +21,6 @@ from basic_deployment import SwiftProxyBasicDeployment
 if __name__ == '__main__':
     deployment = SwiftProxyBasicDeployment(series='artful')
     deployment.run_tests()
+
+# NOTE(beisner):  Artful target disabled, pending bug:
+# https://bugs.launchpad.net/charm-percona-cluster/+bug/1728132
diff --git a/tests/gate-basic-xenial-pike b/tests/gate-basic-xenial-pike
old mode 100644
new mode 100755