fixed #936

src/install.js

@@ -121,6 +121,10 @@ var async = require('async'),
 									password: databaseConfig['redis:password'],
 									database: databaseConfig['redis:database']
 								};
+
+								if (config.redis.host.slice(0, 1) === '/') {
+									delete config.redis.port;
+								}
 							} else if (config.database === 'mongo') {
 								config.mongo = {
 									host: databaseConfig['mongo:host'],