我在hortonworks hdp沙盒上收到以下错误：
连接失败http://sandbox-hdp.hortonworks.com：50070（<urlopen error[errno 111]connection densed>）

我在网上找到的所有解决方案，都是给它时间，全部启动，重新启动。我已经等了一天多了，它还是不起作用。我已经开始计时了，没有任何变化。对于“restart all（全部重新启动）”，下图显示为灰色：

有什么原因让它变灰了吗？
请让我知道，如果有任何行动，我可以做这工作。我有29个来自沙盒的警报，都是由于这个错误。任何洞察都将不胜感激！

以下是完整的strack跟踪：
java.net.connectexception:sandbox-hdp.hortonworks。com:50070：在java.net.abstractplainsocketimpl.doconnect（abstractplainsocketimpl）的java.net.plainsocketimpl.socketconnect（本机方法）处拒绝连接（拒绝连接）。java:350)在java.net.abstractplainsocketimpl.connecttoaddress（abstractplainsocketimpl。java:206)在java.net.abstractplainsocketimpl.connect（abstractplainsocketimpl。java:188)在java.net.socksocketimpl.connect（socksocketimpl。java:392)在java.net.socket.connect（socket。java:589)在sun.net.networkclient.doconnect（networkclient。java:175)在sun.net。www.http.httpclient.openserver（httpclient。java:463)在太阳网。www.http.httpclient.openserver（httpclient。java:558)在sun.net。www.http.httpclient.（httpclient。java:242)在sun.net。www.http.httpclient.new（httpclient。java:339)在sun.net。www.http.httpclient.new（httpclient。java:357)在sun.net。www.protocol.http.httpurlconnection.getnewhttpclient（httpurlconnection。java:1220)在太阳网。www.protocol.http.httpurlconnection.plainconnect0（httpurlconnection。java:1156)在sun.net。www.protocol.http.httpurlconnection.plainconnect（httpurlconnection。java:1050)在sun.net。www.protocol.http.httpurlconnection.connect（httpurlconnection。java:984)在org.apache.hadoop.hdfs.web.webhdfsfilesystem$abstractrunner.connect（webhdfsfilesystem）。java:722)在org.apache.hadoop.hdfs.web.webhdfsfilesystem$abstractrunner.connect（webhdfsfilesystem）上。java:674)位于org.apache.hadoop.hdfs.web.webhdfsfilesystem$abstractrunner.runwithretry（webhdfsfilesystem）。java:747)在org.apache.hadoop.hdfs.web.webhdfsfilesystem$abstractrunner.access$100（webhdfsfilesystem。java:592)在org.apache.hadoop.hdfs.web.webhdfsfilesystem$abstractrunner$1.run（webhdfsfilesystem。java:622)位于javax.security.auth.subject.doas（subject）的java.security.accesscontroller.doprivileged（本机方法）。java:422)在org.apache.hadoop.security.usergroupinformation.doas（用户组信息。java:1866)在org.apache.hadoop.hdfs.web.webhdfsfilesystem$abstractrunner.run（webhdfsfilesystem。java:618)在org.apache.hadoop.hdfs.web.webhdfsfilesystem.gethdfsfilestatus（webhdfsfilesystem。java:1004)在org.apache.hadoop.hdfs.web.webhdfsfilesystem.getfilestatus（webhdfsfilesystem）。java:1020)在org.apache.ambari.view.utils.hdfs.hdfsapi$4.run（hdfsapi。java:216)在org.apache.ambari.view.utils.hdfs.hdfsapi$4.run（hdfsapi。java:214)位于javax.security.auth.subject.doas（subject）的java.security.accesscontroller.doprivileged（本机方法）。java:422)在org.apache.hadoop.security.usergroupinformation.doas（用户组信息。java:1866)在org.apache.ambari.view.utils.hdfs.hdfsapi.execute（hdfsapi。java:513)在org.apache.ambari.view.utils.hdfs.hdfsapi.execute（hdfsapi。java:489)在org.apache.ambari.view.utils.hdfs.hdfsapi.getfilestatus（hdfsapi。java:214)在org.apache.ambari.view.commons.hdfs.userservice.homedir（用户服务。java:67)在org.apache.ambari.view.hive20.resources.files.fileservice.userhomemoketest（fileservice。java:256)在org.apache.ambari.view.hive20.helpservice.userhomestatus（helpservice。java:89)位于sun.reflect.nativemethodaccessorimpl.invoke0（本机方法）sun.reflect.nativemethodaccessorimpl.invoke（nativemethodaccessorimpl。java:62)在sun.reflect.delegatingmethodaccessorimpl.invoke（delegatingmethodaccessorimpl。java:43)在java.lang.reflect.method.invoke（方法。java:498)在com.sun.jersey.spi.container.javamethodinvokerfactory$1.invoke（javamethodinvokerfactory）。java:60)在com.sun.jersey.server.impl.model.method.dispatch.abstractresourcemethoddispatchprovider$responseoutinvoker.\u dispatch（abstractresourcemethoddispatchprovider）。java:205)在com.sun.jersey.server.impl.model.method.dispatch.resourcejavamethoddispatcher.dispatch（resourcejavamethoddispatcher）上。java:75)在com.sun.jersey.server.impl.uri.rules.httpmethodrule.accept（httpmethodrule。java:302)在com.sun.jersey.server.impl.uri.rules.righthandpathrule.accept（righthandpathrule。java:147)在com.sun.jersey.server.impl.uri.rules.sublocatorrule.accept（sublocatorrule。java:137)在com.sun.jersey.server.impl.uri.rules.righthandpathrule.accept（righthandpathrule。java:147)在com.sun.jersey.server.impl.uri.rules.sublocatorrule.accept（sublocatorrule。java:137)在com.sun.jersey.server.impl.uri.rules.righthandpathrule.accept（righthandpathrule。java:147)在com.sun.jersey.server.impl.uri.rules.sublocatorrule.accept（sublocatorrule。java:137)在com.sun.jersey.server.impl.uri.rules.righthandpathrule.accept（righthandpathrule。java:147)在com.sun.jersey.server.impl.uri.rules.sublocatorrule.accept（sublocatorrule。java:137)在com.sun.jersey.server.impl.uri.rules.righthandpathrule.accept（righthandpathrule。java:147)在com.sun.jersey.server.impl.uri.rules.resourceclassrule.accept（resourceclassrule。java:108)在com.sun.jersey.server.impl.uri.rules.righthandpathrule.accept（righthandpathrule。java:147)在com.sun.jersey.server.impl.uri.rules.rootresourceClasseRule.accept（rootresourceClasseRule。java:84)在com.sun.jersey.server.impl.application.webapplicationimpl.\u handlerequest（webapplicationimpl。java:1542)在com.sun.jersey.server.impl.application.webapplicationimpl.\u handlerequest（webapplicationimpl。java:1473)在com.sun.jersey.server.impl.application.webapplicationimpl.handlerequest（webapplicationimpl。java:1419)在com.sun.jersey.server.impl.application.webapplicationimpl.handlerequest（webapplicationimpl。java:1409)在com.sun.jersey.spi.container.servlet.webcomponent.service（webcomponent。java:409)在com.sun.jersey.spi.container.servlet.servletcontainer.service（servletcontainer。java:558)在com.sun.jersey.spi.container.servlet.servletcontainer.service（servletcontainer。java:733)在javax.servlet.http.httpservlet.service（httpservlet。java:790)位于org.eclipse.jetty.servlet.servletholder.handle（servletholder。java:684)在org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter（servlethandler。java:1507)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:330)在org.springframework.security.web.access.intercept.filtersecurityinterceptor.invoke（filtersecurityinterceptor。java:118)在org.springframework.security.web.access.intercept.filtersecurityinterceptor.dofilter（filtersecurityinterceptor。java:84)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)在org.apache.ambari.server.security.authorization.ambariauthorizationfilter.dofilter（ambariauthorizationfilter。java:287) 在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)在org.springframework.security.web.access.exceptiontranslationfilter.dofilter（exceptiontranslationfilter。java:113)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)在org.springframework.security.web.session.sessionmanagementfilter.dofilter（sessionmanagementfilter。java:103)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)在org.springframework.security.web.authentication.anonymousauthenticationfilter.dofilter（anonymousauthenticationfilter。java:113)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)位于org.springframework.security.web.servletapi.securitycontextholderawarerequestfilter.dofilter（securitycontextholderawarerequestfilter）。java:54)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)在org.springframework.security.web.savedrequest.requestcacheawarefilter.dofilter（requestcacheawarefilter。java:45)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)在org.apache.ambari.server.security.authentication.ambaridelgatingauthenticationfilter.dofilter（ambaridelgatingauthenticationfilter）。java:132)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)在org.apache.ambari.server.security.authorization.ambariuserauthorizationfilter.dofilter（ambariuserauthorizationfilter。java:91)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)在org.springframework.security.web.context.securitycontextpersistencefilter.dofilter（securitycontextpersistencefilter）。java:87)在org.springframework.security.web.filterchainproxy$virtualfilterchain.dofilter（filterchainproxy。java:342)在org.springframework.security.web.filterchainproxy.dofilternternal（filterchainproxy。java:192)在org.springframework.security.web.filterchainproxy.dofilter（filterchainproxy。java:160)在org.springframework.web.filter.delegatingfilterproxy.invokedelegate（delegatingfilterproxy。java:237)在org.springframework.web.filter.delegatingfilterproxy.dofilter（delegatingfilterproxy。java:167)在org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter（servlethandler。java:1478)在org.apache.ambari.server.api.methodoverridefilter.dofilter（methodoverridefilter。java:72)位于org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter（servlethandler。java:1478)在org.apache.ambari.server.api.ambaripersistfilter.dofilter（ambaripersistfilter）。java:47)位于org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter（servlethandler。java:1478)在org.apache.ambari.server.view.ambarivewsmdclockingfilter.dofilter（ambarivewsmdclockingfilter。java:54)在org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter（servle）