diff --git a/.zuul.yaml b/.zuul.yaml
index 7d332f9c8e19..4b5556cfdf84 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -703,6 +703,8 @@
       tox_envlist: all
       # Run compute API and only the test_server_basic_ops scenario tests.
       tempest_test_regex: ^tempest\.(scenario\.test_server_basic_ops|(api\.compute))
+      devstack_localrc:
+        <<: *uec_image_vars
 
 - job:
     name: nova-ceph-multistore
@@ -838,6 +840,9 @@
         - ironic-tempest-ipa-wholedisk-bios-agent_ipmitool-tinyipa:
             voting: false
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - nova-ceph-multistore:
             irrelevant-files: *nova-base-irrelevant-files
         - neutron-linuxbridge-tempest:
@@ -846,6 +851,9 @@
               # so that we only run it on changes to networking and libvirt/vif
               # code; we don't need to run this on all changes.
               - ^(?!nova/network/.*)(?!nova/virt/libvirt/vif.py).*$
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - nova-live-migration
         - nova-live-migration-ceph
         - nova-lvm
@@ -877,24 +885,42 @@
              - ^setup.cfg$
              - ^tools/.*$
              - ^tox.ini$
+           vars:
+             devstack_localrc:
+               <<: *uec_image_vars
         - tempest-integrated-compute-enforce-scope-new-defaults:
             irrelevant-files: *policies-irrelevant-files
         - tempest-integrated-compute-rbac-old-defaults:
             irrelevant-files: *policies-irrelevant-files
         - grenade-skip-level-always:
             irrelevant-files: *policies-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - nova-grenade-multinode:
             irrelevant-files: *policies-irrelevant-files
         - tempest-ipv6-only:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - openstacksdk-functional-devstack:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - cyborg-tempest:
             irrelevant-files: *nova-base-irrelevant-files
             voting: false
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - barbican-tempest-plugin-simple-crypto:
             irrelevant-files: *nova-base-irrelevant-files
             voting: false
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
     gate:
       jobs:
         - nova-live-migration
@@ -912,53 +938,104 @@
               # so that we only run it on changes to networking and libvirt/vif
               # code; we don't need to run this on all changes.
               - ^(?!nova/network/.*)(?!nova/virt/libvirt/vif.py).*$
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - tempest-integrated-compute:
-           irrelevant-files: *policies-irrelevant-files
+            irrelevant-files: *policies-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - tempest-integrated-compute-enforce-scope-new-defaults:
             irrelevant-files: *policies-irrelevant-files
         - tempest-integrated-compute-rbac-old-defaults:
             irrelevant-files: *policies-irrelevant-files
         - grenade-skip-level-always:
             irrelevant-files: *policies-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - nova-grenade-multinode:
            irrelevant-files: *policies-irrelevant-files
         - tempest-ipv6-only:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - openstacksdk-functional-devstack:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
     periodic-weekly:
       jobs:
         # Runs emulation feature functionality test less frequently due
         # to being the initial release and experimental in nature.
         - nova-emulation
-        - tempest-centos9-stream-fips
+        - tempest-centos9-stream-fips:
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
     experimental:
       jobs:
         - ironic-tempest-bfv:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - ironic-tempest-ipa-wholedisk-direct-tinyipa-multinode:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - devstack-plugin-nfs-tempest-full:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - nova-osprofiler-redis
         - tempest-pg-full:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - nova-tempest-full-oslo.versionedobjects:
             irrelevant-files: *nova-base-irrelevant-files
         - nova-tempest-v2-api:
             irrelevant-files: *nova-base-irrelevant-files
         - neutron-ovs-tempest-dvr-ha-multinode-full:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - neutron-ovs-tempest-iptables_hybrid:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - os-vif-ovs:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - devstack-plugin-ceph-compute-local-ephemeral:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - devstack-tobiko-nova:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - tempest-centos9-stream-fips:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars
         - nova-emulation
         - tempest-integrated-compute-centos-9-stream:
             irrelevant-files: *nova-base-irrelevant-files
+            vars:
+              devstack_localrc:
+                <<: *uec_image_vars