maven-nexus私服central索引不能下载

运行环境：阿里云ESC centos6.5 64位 jdk1.7_80 nexus-2.14.1-01-bundle.tar.gz

试用过的仓库地址：
http://repo1.maven.org/maven2/
http://repo2.maven.org/maven2/
http://repo.maven.apache.org/maven2/

问题：常规的排错方式都已经用过,不能解决问题。
1、不能下载central索引；
2、即使拷贝过来索引，也不能下载jar。
3、怀疑是网络封闭问题，但是使用wget下载索引页面没有问题。

地址：http://115.29.102.250:8081/nexus/ 密码：原始密码 ，希望能有人给个解决方案。

2016-11-12 11:05:53,652+0800 DEBUG [pxpool-1-thread-2] admin remote.storage.outbound - [central] GET http://repo.maven.apache.org/maven2/.index/nexus-maven-repository-index.properties -> null; 20.00 s
2016-11-12 11:05:53,654+0800 WARN [pxpool-1-thread-2] admin org.sonatype.nexus.index.DefaultIndexerManager - Cannot fetch remote index for repository "Central" [id=central] due to IO problem.
org.sonatype.nexus.proxy.RemoteStorageException: Transport error while executing GET method [repositoryId="central", requestPath="/.index/nexus-maven-repository-index.properties", remoteUrl="http://repo.maven.apache.org/maven2/.index/nexus-maven-repository-index.properties"]

at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:616) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.executeRequest(HttpClientRemoteStorage.java:521) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.retrieveItem(HttpClientRemoteStorage.java:216) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.index.DefaultIndexerManager$11.retrieve(DefaultIndexerManager.java:1256) ~[nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.downloadIndexProperties(DefaultIndexUpdater.java:465) ~[nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.access$000(DefaultIndexUpdater.java:76) ~[nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.apache.maven.index.updater.DefaultIndexUpdater$IndexAdaptor.setProperties(DefaultIndexUpdater.java:595) ~[nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:869) ~[nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:159) ~[nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.index.DefaultIndexerManager.updateRemoteIndex(DefaultIndexerManager.java:1291) [nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.index.DefaultIndexerManager.access$1100(DefaultIndexerManager.java:188) [nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.index.DefaultIndexerManager$IndexUpdateRunnable.run(DefaultIndexerManager.java:1060) [nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.index.DefaultIndexerManager.temporary(DefaultIndexerManager.java:2358) [nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:1022) [nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:961) [nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:938) [nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.index.tasks.ReindexTaskHandlerLegacy.reindexRepository(ReindexTaskHandlerLegacy.java:61) [nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.index.tasks.AbstractIndexerTask.doRun(AbstractIndexerTask.java:68) [nexus-indexer-lucene-plugin-2.14.1-01/:na]
at org.sonatype.nexus.scheduling.AbstractNexusTask.call(AbstractNexusTask.java:163) [nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.scheduling.DefaultScheduledTask.call(DefaultScheduledTask.java:418) [nexus-scheduler-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.threads.MDCAwareCallable.call(MDCAwareCallable.java:44) [nexus-core-2.14.1-01.jar:2.14.1-01]
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) [shiro-core-1.3.2.jar:1.3.2]
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) [shiro-core-1.3.2.jar:1.3.2]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_80]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) [na:1.7.0_80]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_80]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]

Caused by: java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:152) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:122) ~[na:1.7.0_80]
at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:136) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:152) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:270) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:161) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:153) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:254) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:569) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
... 28 common frames omitted

2016-11-12 11:05:53,659+0800 WARN [pxpool-1-thread-2] admin org.sonatype.nexus.index.tasks.UpdateIndexTask - Scheduled task (UpdateIndexTask) failed :: Updating repository index "Central" from path / and below. (started 2016-11-12T11:05:33+08:00, runtime 0:00:20.556)
org.sonatype.nexus.proxy.RemoteStorageException: Transport error while executing GET method [repositoryId="central", requestPath="/.index/nexus-maven-repository-index.properties", remoteUrl="http://repo.maven.apache.org/maven2/.index/nexus-maven-repository-index.properties"]

at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:616) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.executeRequest(HttpClientRemoteStorage.java:521) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.retrieveItem(HttpClientRemoteStorage.java:216) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.index.DefaultIndexerManager$11.retrieve(DefaultIndexerManager.java:1256) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.downloadIndexProperties(DefaultIndexUpdater.java:465) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.access$000(DefaultIndexUpdater.java:76) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater$IndexAdaptor.setProperties(DefaultIndexUpdater.java:595) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:869) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:159) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.updateRemoteIndex(DefaultIndexerManager.java:1291) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.access$1100(DefaultIndexerManager.java:188) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager$IndexUpdateRunnable.run(DefaultIndexerManager.java:1060) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.temporary(DefaultIndexerManager.java:2358) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:1022) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:961) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:938) ~[na:na]
at org.sonatype.nexus.index.tasks.ReindexTaskHandlerLegacy.reindexRepository(ReindexTaskHandlerLegacy.java:61) ~[na:na]
at org.sonatype.nexus.index.tasks.AbstractIndexerTask.doRun(AbstractIndexerTask.java:68) ~[na:na]
at org.sonatype.nexus.scheduling.AbstractNexusTask.call(AbstractNexusTask.java:163) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.scheduling.DefaultScheduledTask.call(DefaultScheduledTask.java:418) [nexus-scheduler-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.threads.MDCAwareCallable.call(MDCAwareCallable.java:44) [nexus-core-2.14.1-01.jar:2.14.1-01]
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) [shiro-core-1.3.2.jar:1.3.2]
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) [shiro-core-1.3.2.jar:1.3.2]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_80]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) [na:1.7.0_80]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_80]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]

Caused by: java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:152) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:122) ~[na:1.7.0_80]
at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:136) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:152) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:270) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:161) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:153) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:254) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:569) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
... 28 common frames omitted

2016-11-12 11:05:53,660+0800 DEBUG [pxpool-1-thread-2] admin org.sonatype.sisu.goodies.eventbus.internal.DefaultEventBus - Event 'NexusTaskEventStoppedFailed{nexusTask=org.sonatype.nexus.index.tasks.UpdateIndexTask@3b795979}' fired
2016-11-12 11:05:53,705+0800 DEBUG [pxpool-1-thread-2] admin org.sonatype.nexus.feeds.DefaultFeedRecorder - Updating repository index "Central" from path / and below. : Process started on Sat Nov 12 11:05:33 CST 2016, finished on Sat Nov 12 11:05:53 CST 2016 with error. Error message is: org.sonatype.nexus.proxy.RemoteStorageException, Transport error while executing GET method [repositoryId="central", requestPath="/.index/nexus-maven-repository-index.properties", remoteUrl="http://repo.maven.apache.org/maven2/.index/nexus-maven-repository-index.properties"] Strack trace: org.sonatype.nexus.proxy.RemoteStorageException: Transport error while executing GET method [repositoryId="central", requestPath="/.index/nexus-maven-repository-index.properties", remoteUrl="http://repo.maven.apache.org/maven2/.index/nexus-maven-repository-index.properties"]

at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:616)
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.executeRequest(HttpClientRemoteStorage.java:521)
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.retrieveItem(HttpClientRemoteStorage.java:216)
at org.sonatype.nexus.index.DefaultIndexerManager$11.retrieve(DefaultIndexerManager.java:1256)
at org.apache.maven.index.updater.DefaultIndexUpdater.downloadIndexProperties(DefaultIndexUpdater.java:465)
at org.apache.maven.index.updater.DefaultIndexUpdater.access$000(DefaultIndexUpdater.java:76)
at org.apache.maven.index.updater.DefaultIndexUpdater$IndexAdaptor.setProperties(DefaultIndexUpdater.java:595)
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:869)
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:159)
at org.sonatype.nexus.index.DefaultIndexerManager.updateRemoteIndex(DefaultIndexerManager.java:1291)
at org.sonatype.nexus.index.DefaultIndexerManager.access$1100(DefaultIndexerManager.java:188)
at org.sonatype.nexus.index.DefaultIndexerManager$IndexUpdateRunnable.run(DefaultIndexerManager.java:1060)
at org.sonatype.nexus.index.DefaultIndexerManager.temporary(DefaultIndexerManager.java:2358)
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:1022)
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:961)
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:938)
at org.sonatype.nexus.index.tasks.ReindexTaskHandlerLegacy.reindexRepository(ReindexTaskHandlerLegacy.java:61)
at org.sonatype.nexus.index.tasks.AbstractIndexerTask.doRun(AbstractIndexerTask.java:68)
at org.sonatype.nexus.scheduling.AbstractNexusTask.call(AbstractNexusTask.java:163)
at org.sonatype.scheduling.DefaultScheduledTask.call(DefaultScheduledTask.java:418)
at org.sonatype.nexus.threads.MDCAwareCallable.call(MDCAwareCallable.java:44)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

Caused by: java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:152)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:136)
at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:152)
at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:270)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260)
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:161)
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:153)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:254)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:569)
... 28 more

org.sonatype.nexus.proxy.RemoteStorageException: Transport error while executing GET method [repositoryId="central", requestPath="/.index/nexus-maven-repository-index.properties", remoteUrl="http://repo.maven.apache.org/maven2/.index/nexus-maven-repository-index.properties"]

at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:616) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.executeRequest(HttpClientRemoteStorage.java:521) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.retrieveItem(HttpClientRemoteStorage.java:216) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.index.DefaultIndexerManager$11.retrieve(DefaultIndexerManager.java:1256) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.downloadIndexProperties(DefaultIndexUpdater.java:465) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.access$000(DefaultIndexUpdater.java:76) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater$IndexAdaptor.setProperties(DefaultIndexUpdater.java:595) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:869) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:159) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.updateRemoteIndex(DefaultIndexerManager.java:1291) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.access$1100(DefaultIndexerManager.java:188) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager$IndexUpdateRunnable.run(DefaultIndexerManager.java:1060) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.temporary(DefaultIndexerManager.java:2358) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:1022) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:961) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:938) ~[na:na]
at org.sonatype.nexus.index.tasks.ReindexTaskHandlerLegacy.reindexRepository(ReindexTaskHandlerLegacy.java:61) ~[na:na]
at org.sonatype.nexus.index.tasks.AbstractIndexerTask.doRun(AbstractIndexerTask.java:68) ~[na:na]
at org.sonatype.nexus.scheduling.AbstractNexusTask.call(AbstractNexusTask.java:163) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.scheduling.DefaultScheduledTask.call(DefaultScheduledTask.java:418) ~[nexus-scheduler-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.threads.MDCAwareCallable.call(MDCAwareCallable.java:44) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) ~[shiro-core-1.3.2.jar:1.3.2]
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) ~[shiro-core-1.3.2.jar:1.3.2]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_80]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) [na:1.7.0_80]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_80]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]

Caused by: java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:152) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:122) ~[na:1.7.0_80]
at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:136) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:152) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:270) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:161) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:153) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:254) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:569) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
... 28 common frames omitted

2016-11-12 11:05:53,708+0800 WARN [pxpool-1-thread-2] admin org.sonatype.scheduling.DefaultScheduledTask - Exception in call method of scheduled task Internal
org.sonatype.nexus.proxy.RemoteStorageException: Transport error while executing GET method [repositoryId="central", requestPath="/.index/nexus-maven-repository-index.properties", remoteUrl="http://repo.maven.apache.org/maven2/.index/nexus-maven-repository-index.properties"]

at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:616) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.executeRequest(HttpClientRemoteStorage.java:521) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.retrieveItem(HttpClientRemoteStorage.java:216) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.index.DefaultIndexerManager$11.retrieve(DefaultIndexerManager.java:1256) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.downloadIndexProperties(DefaultIndexUpdater.java:465) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.access$000(DefaultIndexUpdater.java:76) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater$IndexAdaptor.setProperties(DefaultIndexUpdater.java:595) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:869) ~[na:na]
at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:159) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.updateRemoteIndex(DefaultIndexerManager.java:1291) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.access$1100(DefaultIndexerManager.java:188) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager$IndexUpdateRunnable.run(DefaultIndexerManager.java:1060) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.temporary(DefaultIndexerManager.java:2358) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:1022) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:961) ~[na:na]
at org.sonatype.nexus.index.DefaultIndexerManager.reindexRepository(DefaultIndexerManager.java:938) ~[na:na]
at org.sonatype.nexus.index.tasks.ReindexTaskHandlerLegacy.reindexRepository(ReindexTaskHandlerLegacy.java:61) ~[na:na]
at org.sonatype.nexus.index.tasks.AbstractIndexerTask.doRun(AbstractIndexerTask.java:68) ~[na:na]
at org.sonatype.nexus.scheduling.AbstractNexusTask.call(AbstractNexusTask.java:163) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.scheduling.DefaultScheduledTask.call(DefaultScheduledTask.java:418) ~[nexus-scheduler-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.threads.MDCAwareCallable.call(MDCAwareCallable.java:44) [nexus-core-2.14.1-01.jar:2.14.1-01]
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) [shiro-core-1.3.2.jar:1.3.2]
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) [shiro-core-1.3.2.jar:1.3.2]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_80]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) [na:1.7.0_80]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_80]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]

Caused by: java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:152) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:122) ~[na:1.7.0_80]
at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:136) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:152) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:270) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:161) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:153) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) ~[httpcore-4.3.3.jar:4.3.3]
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:254) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:569) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
... 28 common frames omitted

2016-11-12 11:05:53,710+0800 DEBUG [pxpool-1-thread-2] admin org.sonatype.nexus.configuration.application.DefaultNexusConfiguration - Applying Nexus Configuration...
2016-11-12 11:05:53,710+0800 DEBUG [pxpool-1-thread-2] admin org.sonatype.sisu.goodies.eventbus.internal.DefaultEventBus - Event 'org.sonatype.nexus.configuration.ConfigurationPrepareForSaveEvent@5835b07e' fired
2016-11-12 11:05:53,711+0800 INFO [pxpool-1-thread-2] admin org.sonatype.nexus.configuration.application.DefaultNexusConfiguration - Applying Nexus Configuration due to changes in [Scheduled Tasks] made by *TASK...
2016-11-12 11:05:53,711+0800 DEBUG [pxpool-1-thread-2] admin org.sonatype.sisu.goodies.eventbus.internal.DefaultEventBus - Event 'org.sonatype.nexus.configuration.ConfigurationCommitEvent@2cd64d70' fired
2016-11-12 11:05:53,711+0800 DEBUG [pxpool-1-thread-2] admin org.sonatype.sisu.goodies.eventbus.internal.DefaultEventBus - Event 'org.sonatype.nexus.configuration.ConfigurationChangeEvent@29760b0f' fired
2016-11-12 11:05:53,780+0800 DEBUG [pxpool-1-thread-2] admin org.sonatype.nexus.configuration.source.FileConfigurationSource - Saving configuration: /usr/local/nexus/sonatype-work/nexus/conf/nexus.xml
2016-11-12 11:05:53,783+0800 DEBUG [pxpool-1-thread-2] admin org.sonatype.sisu.goodies.eventbus.internal.DefaultEventBus - Event 'org.sonatype.nexus.configuration.ConfigurationSaveEvent@8f9fc0e' fired
2016-11-12 11:05:54,053+0800 DEBUG [qtp1792695255-49] org.apache.shiro.web.servlet.SimpleCookie - Found 'NXSESSIONID' cookie value [5794e909-9780-4680-8a6b-461d0148a846]
2016-11-12 11:05:54,053+0800 DEBUG [qtp1792695255-49] net.sf.ehcache.store.disk.Segment - put added 0 on heap
2016-11-12 11:05:54,055+0800 DEBUG [qtp1792695255-49] net.sf.ehcache.store.disk.Segment - put updated, deleted 0 on heap
2016-11-12 11:05:54,055+0800 DEBUG [qtp1792695255-49] net.sf.ehcache.store.disk.Segment - put updated, deleted 0 on disk
2016-11-12 11:05:54,055+0800 DEBUG [shiro-activeSessionCache.data] *SYSTEM net.sf.ehcache.store.disk.Segment - fault removed 0 from heap
2016-11-12 11:05:54,055+0800 DEBUG [shiro-activeSessionCache.data] *SYSTEM net.sf.ehcache.store.disk.Segment - fault added 0 on disk
2016-11-12 11:05:54,058+0800 DEBUG [qtp1792695255-49] admin org.sonatype.nexus.security.filter.authc.NexusAuthenticationFilter - No authorization found (header or request parameter)
2016-11-12 11:05:54,066+0800 DEBUG [qtp1792695255-49] admin org.sonatype.nexus.restlet1x.internal.RestletServlet - Processing: GET /nexus/service/local/repository_statuses?_dc=1478919952446 (http://115.29.102.250:8081/nexus/service/local/repository_statuses)
2016-11-12 11:05:55,152+0800 DEBUG [HC4x-EvictingThread] *SYSTEM org.sonatype.nexus.apachehttpclient.Hc4ProviderImpl$ManagedClientConnectionManager - Closing expired connections
2016-11-12 11:05:55,153+0800 DEBUG [HC4x-EvictingThread] *SYSTEM org.sonatype.nexus.apachehttpclient.Hc4ProviderImpl$ManagedClientConnectionManager - Closing connections idle longer than 30000 MILLISECONDS
2016-11-12 11:05:55,455+0800 DEBUG [proxy-3-thread-2] admin org.sonatype.nexus.apachehttpclient.Hc4ProviderImpl$ManagedClientConnectionManager - Connection released: id: 7[total kept alive: 0; route allocated: 0 of 20; total allocated: 0 of 200]
2016-11-12 11:05:55,456+0800 DEBUG [proxy-3-thread-2] admin remote.storage.outbound - [apache-snapshots] HEAD https://repository.apache.org/snapshots/ -> null; 26.32 s
2016-11-12 11:05:55,457+0800 DEBUG [proxy-3-thread-2] admin org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage - HEAD method failed, will attempt GET. Exception: Transport error while executing HEAD method [repositoryId="apache-snapshots", requestPath="/", remoteUrl="https://repository.apache.org/snapshots/"]
org.sonatype.nexus.proxy.RemoteStorageException: Transport error while executing HEAD method [repositoryId="apache-snapshots", requestPath="/", remoteUrl="https://repository.apache.org/snapshots/"]

at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:616) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.executeRequest(HttpClientRemoteStorage.java:521) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.executeRequestAndRelease(HttpClientRemoteStorage.java:634) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.checkRemoteAvailability(HttpClientRemoteStorage.java:371) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.storage.remote.AbstractHTTPRemoteRepositoryStorage.isReachable(AbstractHTTPRemoteRepositoryStorage.java:50) [nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.repository.AbstractProxyRepository.isRemoteStorageReachable(AbstractProxyRepository.java:1680) [nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.proxy.repository.AbstractProxyRepository$RemoteStatusUpdateCallable.call(AbstractProxyRepository.java:1654) [nexus-core-2.14.1-01.jar:2.14.1-01]
at org.sonatype.nexus.threads.MDCAwareCallable.call(MDCAwareCallable.java:44) [nexus-core-2.14.1-01.jar:2.14.1-01]
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) [shiro-core-1.3.2.jar:1.3.2]
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) [shiro-core-1.3.2.jar:1.3.2]
at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_80]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]

Caused by: org.apache.http.conn.ConnectTimeoutException: Connect to repository.apache.org:443 [repository.apache.org/207.244.88.143] failed: Read timed out

at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:134) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:319) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:569) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
... 13 common frames omitted

Caused by: java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:152) ~[na:1.7.0_80]
at java.net.SocketInputStream.read(SocketInputStream.java:122) ~[na:1.7.0_80]
at sun.security.ssl.InputRecord.readFully(InputRecord.java:442) ~[na:1.7.0_80]
at sun.security.ssl.InputRecord.readV3Record(InputRecord.java:554) ~[na:1.7.0_80]
at sun.security.ssl.InputRecord.read(InputRecord.java:509) ~[na:1.7.0_80]
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:934) ~[na:1.7.0_80]
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1332) ~[na:1.7.0_80]
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1359) ~[na:1.7.0_80]
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1343) ~[na:1.7.0_80]
at org.sonatype.nexus.apachehttpclient.NexusSSLConnectionSocketFactory.connectSocket(NexusSSLConnectionSocketFactory.java:130) ~[nexus-core-2.14.1-01.jar:2.14.1-01]
at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:125) ~[httpclient-4.3.6.jar:4.3.6]
... 23 common frames omitted