diff --git a/lib/swift b/lib/swift
index 21ed920..d8c790a 100644
--- a/lib/swift
+++ b/lib/swift
@@ -330,7 +330,12 @@
     SWIFT_CONFIG_PROXY_SERVER=${SWIFT_CONF_DIR}/proxy-server.conf
     cp ${SWIFT_DIR}/etc/proxy-server.conf-sample ${SWIFT_CONFIG_PROXY_SERVER}
 
-    cp ${SWIFT_DIR}/etc/container-sync-realms.conf-sample ${SWIFT_CONF_DIR}/container-sync-realms.conf
+    # To run container sync feature introduced in Swift ver 1.12.0,
+    # container sync "realm" is added in container-sync-realms.conf
+    local csyncfile=${SWIFT_CONF_DIR}/container-sync-realms.conf
+    cp ${SWIFT_DIR}/etc/container-sync-realms.conf-sample ${csyncfile}
+    iniset ${csyncfile} realm1 key realm1key
+    iniset ${csyncfile} realm1 cluster_name1 "$SWIFT_SERVICE_PROTOCOL://$SERVICE_HOST:8080/v1/"
 
     iniuncomment ${SWIFT_CONFIG_PROXY_SERVER} DEFAULT user
     iniset ${SWIFT_CONFIG_PROXY_SERVER} DEFAULT user ${STACK_USER}