@@ -131,6 +131,9 @@ KEYSTONE_UNIQUE_LAST_PASSWORD_COUNT=${KEYSTONE_UNIQUE_LAST_PASSWORD_COUNT:-2}

 # however may not be suitable for real production.

 KEYSTONE_PASSWORD_HASH_ROUNDS=${KEYSTONE_PASSWORD_HASH_ROUNDS:-4}

+# Cache settings

+KEYSTONE_ENABLE_CACHE=${KEYSTONE_ENABLE_CACHE:-True}

+

 # Functions

 # ---------

@@ -213,9 +216,9 @@ function configure_keystone {

     iniset $KEYSTONE_CONF resource driver "$KEYSTONE_RESOURCE_BACKEND"

     # Enable caching

-    iniset $KEYSTONE_CONF cache enabled "True"

-    iniset $KEYSTONE_CONF cache backend "dogpile.cache.memcached"

-    iniset $KEYSTONE_CONF cache memcache_servers localhost:11211

+    iniset $KEYSTONE_CONF cache enabled $KEYSTONE_ENABLE_CACHE

+    iniset $KEYSTONE_CONF cache backend $CACHE_BACKEND

+    iniset $KEYSTONE_CONF cache memcache_servers $MEMCACHE_SERVERS

     iniset_rpc_backend keystone $KEYSTONE_CONF oslo_messaging_notifications

@@ -91,6 +91,7 @@ NOVA_SERVICE_PROTOCOL=${NOVA_SERVICE_PROTOCOL:-$SERVICE_PROTOCOL}

 NOVA_SERVICE_LOCAL_HOST=${NOVA_SERVICE_LOCAL_HOST:-$SERVICE_LOCAL_HOST}

 NOVA_SERVICE_LISTEN_ADDRESS=${NOVA_SERVICE_LISTEN_ADDRESS:-$(ipv6_unquote $SERVICE_LISTEN_ADDRESS)}

 METADATA_SERVICE_PORT=${METADATA_SERVICE_PORT:-8775}

+NOVA_ENABLE_CACHE=${NOVA_ENABLE_CACHE:-True}

 # Option to enable/disable config drive

 # NOTE: Set ``FORCE_CONFIG_DRIVE="False"`` to turn OFF config drive

@@ -416,8 +417,8 @@ function create_nova_conf {

         iniset $NOVA_CONF DEFAULT bindir "/usr/bin"

     fi

-    # only setup database connections if there are services that

-    # require them running on the host. The ensures that n-cpu doesn't

+    # only setup database connections and cache backend if there are services

+    # that require them running on the host. The ensures that n-cpu doesn't

     # leak a need to use the db in a multinode scenario.

     if is_service_enabled n-api n-cond n-sched; then

         # If we're in multi-tier cells mode, we want our control services pointing

@@ -434,6 +435,13 @@ function create_nova_conf {

         iniset $NOVA_CONF database connection `database_connection_url $db`

         iniset $NOVA_CONF api_database connection `database_connection_url nova_api`

+

+        # Cache related settings

+        # Those settings aren't really needed in n-cpu thus it is configured

+        # only on nodes which runs controller services

+        iniset $NOVA_CONF cache enabled $NOVA_ENABLE_CACHE

+        iniset $NOVA_CONF cache backend $CACHE_BACKEND

+        iniset $NOVA_CONF cache memcache_servers $MEMCACHE_SERVERS

     fi

     if is_service_enabled n-api; then

@@ -770,6 +770,10 @@ ETCD_DOWNLOAD_LOCATION=$ETCD_DOWNLOAD_URL/$ETCD_VERSION/$ETCD_DOWNLOAD_FILE

 # etcd is always required, so place it into list of pre-cached downloads

 EXTRA_CACHE_URLS+=",$ETCD_DOWNLOAD_LOCATION"

+# Cache settings

+CACHE_BACKEND=${CACHE_BACKEND:-"dogpile.cache.memcached"}

+MEMCACHE_SERVERS=${MEMCACHE_SERVERS:-"localhost:11211"}

+

 # Detect duplicate values in IMAGE_URLS

 for image_url in ${IMAGE_URLS//,/ }; do

     if [ $(echo "$IMAGE_URLS" | grep -o -F "$image_url" | wc -l) -gt 1 ]; then