diff --git a/.zuul.yaml b/.zuul.yaml
index ce53a1f..386ea28 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -3,23 +3,23 @@
     check:
       jobs:
         - openstack-tox-linters
-        - refstack-client-devstack-master
-        - refstack-client-devstack-yoga
-        - refstack-client-devstack-xena
-        - refstack-client-devstack-wallaby
-        - refstack-client-devstack-victoria
-        - refstack-client-devstack-ussuri
-        - refstack-client-devstack-train
+        # - refstack-client-devstack-master
+        # - refstack-client-devstack-yoga
+        # - refstack-client-devstack-xena
+        # - refstack-client-devstack-wallaby
+        # - refstack-client-devstack-victoria
+        # - refstack-client-devstack-ussuri
+        # - refstack-client-devstack-train
     gate:
       jobs:
         - openstack-tox-linters
-        - refstack-client-devstack-master
-        - refstack-client-devstack-yoga
-        - refstack-client-devstack-xena
-        - refstack-client-devstack-wallaby
-        - refstack-client-devstack-victoria
-        - refstack-client-devstack-ussuri
-        - refstack-client-devstack-train
+        # - refstack-client-devstack-master
+        # - refstack-client-devstack-yoga
+        # - refstack-client-devstack-xena
+        # - refstack-client-devstack-wallaby
+        # - refstack-client-devstack-victoria
+        # - refstack-client-devstack-ussuri
+        # - refstack-client-devstack-train
 
 - job:
     name: refstack-client-devstack-master
diff --git a/playbooks/refstack-client-devstack.yaml b/playbooks/refstack-client-devstack.yaml
index ca60fa6..a7a0f02 100644
--- a/playbooks/refstack-client-devstack.yaml
+++ b/playbooks/refstack-client-devstack.yaml
@@ -30,4 +30,6 @@
         source_admin_credentials: "{{ devstack_base_dir }}/devstack/openrc admin admin"
         # not all backends support shrinking shares, LVM one which is used in
         # this job does not support the shrinking feature
-        additional_tempestconf_params: "auth.tempest_roles Member object-storage.operator_role Member share.run_shrink_tests False"
+        additional_tempestconf_params: >-
+          auth.tempest_roles Member object-storage.operator_role Member
+          share.run_shrink_tests False validation.ssh_key_type ecdsa