2020-03-26 08:26:46.632 ERROR 28180 --- [com.alibaba.nacos.client.Worker.longPolling.fixed-localhost_8848] c.a.n.c.config.http.ServerHttpAgent      : [NACOS SocketTimeoutException httpPost] currentServerAddr: http://localhost:8848， err : Read timed out
2020-03-26 08:26:46.648 ERROR 28180 --- [com.alibaba.nacos.client.Worker.longPolling.fixed-localhost_8848] c.a.n.c.config.http.ServerHttpAgent      : no available server, currentServerAddr : http://localhost:8848
2020-03-26 08:26:46.654 ERROR 28180 --- [com.alibaba.nacos.client.Worker.longPolling.fixed-localhost_8848] c.a.n.client.config.impl.ClientWorker    : [fixed-localhost_8848] [check-update] get changed dataId exception

java.net.ConnectException: no available server, currentServerAddr : http://localhost:8848
	at com.alibaba.nacos.client.config.http.ServerHttpAgent.httpPost(ServerHttpAgent.java:170) ~[nacos-client-1.1.4.jar:na]
	at com.alibaba.nacos.client.config.http.MetricsHttpAgent.httpPost(MetricsHttpAgent.java:64) ~[nacos-client-1.1.4.jar:na]
	at com.alibaba.nacos.client.config.impl.ClientWorker.checkUpdateConfigStr(ClientWorker.java:377) [nacos-client-1.1.4.jar:na]
	at com.alibaba.nacos.client.config.impl.ClientWorker.checkUpdateDataIds(ClientWorker.java:352) [nacos-client-1.1.4.jar:na]
	at com.alibaba.nacos.client.config.impl.ClientWorker$LongPollingRunnable.run(ClientWorker.java:512) [nacos-client-1.1.4.jar:na]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_91]
	at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266) [na:1.8.0_91]
	at java.util.concurrent.FutureTask.run(FutureTask.java) [na:1.8.0_91]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_91]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_91]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_91]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_91]
	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]

2020-03-26 08:26:46.655 ERROR 28180 --- [com.alibaba.nacos.client.Worker.longPolling.fixed-localhost_8848] c.a.n.client.config.impl.ClientWorker    : longPolling error : 

java.net.ConnectException: no available server, currentServerAddr : http://localhost:8848
	at com.alibaba.nacos.client.config.http.ServerHttpAgent.httpPost(ServerHttpAgent.java:170) ~[nacos-client-1.1.4.jar:na]
	at com.alibaba.nacos.client.config.http.MetricsHttpAgent.httpPost(MetricsHttpAgent.java:64) ~[nacos-client-1.1.4.jar:na]
	at com.alibaba.nacos.client.config.impl.ClientWorker.checkUpdateConfigStr(ClientWorker.java:377) ~[nacos-client-1.1.4.jar:na]
	at com.alibaba.nacos.client.config.impl.ClientWorker.checkUpdateDataIds(ClientWorker.java:352) ~[nacos-client-1.1.4.jar:na]
	at com.alibaba.nacos.client.config.impl.ClientWorker$LongPollingRunnable.run(ClientWorker.java:512) ~[nacos-client-1.1.4.jar:na]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_91]
	at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266) [na:1.8.0_91]
	at java.util.concurrent.FutureTask.run(FutureTask.java) [na:1.8.0_91]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_91]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_91]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_91]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_91]
	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]