Failed to connect to: 10.26.204.231:27018: Connection refused

>  /app/base/lib/kvstore/mongodb.php:25
#0MongoClient->__construct('10.26.204.231:27018',...array(1) { ["connect"]=> bool(true) } )mongodb.php:25
#1base_kvstore_mongodb->__construct(...string(27) "site_route/statics/dispatch" )kernel.php:341
#2kernel::single('base_kvstore_mongodb',...string(27) "site_route/statics/dispatch" )kvstore.php:66
#3base_kvstore->__construct(...string(27) "site_route/statics/dispatch" )kvstore.php:104
#4base_kvstore::instance(...string(27) "site_route/statics/dispatch" )static.php:21
#5site_route_static->get_dispatch('member.html')router.php:704
#6site_router->parse_route_static_dispatch('member.html')router.php:655
#7site_router->parse_query('member.html')router.php:674
#8site_router->init_query_info('member.html')router.php:478
#9site_router->dispatch('member.html')kernel.php:165
#10kernel::boot()index.php:7