nacos配置中心配置后，項目啟動正常，運行項目也正常，但是總是打印如下日志：
2019-10-11 15:44:09.792 [com.alibaba.nacos.client.Worker.longPullingfixed-xxx.xxx.xxx.xxx_8848-xxx.xxx.xxx.xx1_8848-xxx.xxx.xxx.xx2_8848-d6775f80-ed7a-409a-8dbc-49b2cddee4d1] ERROR com.alibaba.nacos.client.config.impl.ServerHttpAgent - [] [] [NACOS SocketTimeoutException] currentServerAddr:xxx.xxx.xxx.xxx:8848
2019-10-11 15:44:09.792 [com.alibaba.nacos.client.Worker.longPullingfixed-xxx.xxx.xxx.xxx_8848-xxx.xxx.xxx.xx1_8848-xxx.xxx.xxx.xx2_8848-d6775f80-ed7a-409a-8dbc-49b2cddee4d1] ERROR com.alibaba.nacos.client.config.impl.ServerHttpAgent - [] [] [NACOS-0002] no available server ERR-CODE: [NACOS-0002], Type: [環境問題], More: [http://console.taobao.net/help/NACOS-0002]
2019-10-11 15:44:09.792 [com.alibaba.nacos.client.Worker.longPullingfixed-xxx.xxx.xxx.xxx_8848-xxx.xxx.xxx.xx1_8848-xxx.xxx.xxx.xx2_8848-d6775f80-ed7a-409a-8dbc-49b2cddee4d1] ERROR com.alibaba.nacos.client.config.impl.ClientWorker - [fixed-xxx.xxx.xxx.xxx_8848-xxx.xxx.xxx.xx1_8848-xxx.xxx.xxx.xx2_8848-d6775f80-ed7a-409a-8dbc-49b2cddee4d1] [] [NACOS-XXXX] [check-update] get changed dataId exception, msg=java.net.ConnectException: no available server
原因是由於在遠程服務器上的配置，網絡不行導致的，將同樣的配置放在本機nacos配置中心上啟動，則沒有該部分打印內容。
經過給官方提issues，查看解答，應是源碼里面超時時間設置過短造成的，官方預計將會在1.2.0版本上修復，當前最新版本是1.1.4，后期可以做升級處理