diff --git a/etc/rpc_deploy/user_variables.yml b/etc/rpc_deploy/user_variables.yml
index 45765a3770..0efa456709 100644
--- a/etc/rpc_deploy/user_variables.yml
+++ b/etc/rpc_deploy/user_variables.yml
@@ -69,7 +69,8 @@ glance_swift_store_region: SomeRegion
 # `publicURL` to communicate with swift over the public network
 glance_swift_store_endpoint_type: internalURL
 glance_notification_driver: noop
-
+# Set glance cache size in bytes, should be less than container size. Defaults to 10GiB
+#glance_image_cache_max_size: 4294967296
 
 ## Heat Options
 heat_stack_domain_admin_password:
diff --git a/rpc_deployment/roles/glance_common/templates/glance-cache.conf b/rpc_deployment/roles/glance_common/templates/glance-cache.conf
index 96d747d193..2345321046 100644
--- a/rpc_deployment/roles/glance_common/templates/glance-cache.conf
+++ b/rpc_deployment/roles/glance_common/templates/glance-cache.conf
@@ -7,7 +7,7 @@ admin_tenant_name = service
 use_syslog = False
 image_cache_dir = /var/lib/glance/cache/
 image_cache_stall_time = 86400
-image_cache_max_size = 10737418240
+image_cache_max_size = {{ glance_image_cache_max_size|default(10737418240) }}
 registry_host = {{ registry_host }}
 registry_port = 9191
 auth_url = {{ auth_admin_uri }}