diff --git a/releasenotes/notes/centos-repo-url-change-a51ef2722adc5db5.yaml b/releasenotes/notes/centos-repo-url-change-a51ef2722adc5db5.yaml
new file mode 100644
index 0000000..0c5f970
--- /dev/null
+++ b/releasenotes/notes/centos-repo-url-change-a51ef2722adc5db5.yaml
@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    The upstream yum mirrors for MariaDB have changed their directory
+    structure from ``/10.1/centos/7`` to ``/10.1/centos7-amd64/``. The URL
+    has been changed, but deployers with an older OpenStack-Ansible deployment
+    may need to set ``galera_repo_url`` to match the new directory structure.
diff --git a/vars/redhat-7.yml b/vars/redhat-7.yml
index b62e6ec..a1a37c9 100644
--- a/vars/redhat-7.yml
+++ b/vars/redhat-7.yml
@@ -16,7 +16,7 @@
 # TODO(odyssey4me):
 # The use of 'galera_client_yum_repo_url' below is for backwards compatibility
 # to settings released in Newton. It can be removed in Queens.
-_galera_client_repo_url: "{{ galera_client_yum_repo_url | default('http://yum.mariadb.org/' ~ galera_client_major_version ~ '/centos/7/x86_64') }}"
+_galera_client_repo_url: "{{ galera_client_yum_repo_url | default('http://yum.mariadb.org/' ~ galera_client_major_version ~ '/centos7-amd64/') }}"
 _galera_client_repo:
   state: "present"
   name: MariaDB