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    <title>question Cannot access Cloudera manager web interface in Archives of Support Questions (Read Only)</title>
    <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Cannot-access-Cloudera-manager-web-interface/m-p/44824#M39936</link>
    <description>&lt;P&gt;My Web console on CDH 5.5.1 stopped working. Although the cluster nodes are still functional, and I can submit jobs through spark-submit, the Cloudera Manager interface is dead. Here's the output from the web page.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;This is probably easy to fix, but I'm new.&lt;/P&gt;&lt;P&gt;Thanks for your tips.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;-------------&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;HTTP ERROR 500&lt;/P&gt;&lt;P&gt;Problem accessing /cmf/login. Reason:&lt;BR /&gt;com/mchange/v2/lang/VersionUtils&lt;/P&gt;&lt;P&gt;&lt;BR /&gt;Caused by:&lt;BR /&gt;java.lang.NoClassDefFoundError: com/mchange/v2/lang/VersionUtils&lt;BR /&gt;at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:104)&lt;BR /&gt;at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)&lt;BR /&gt;at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)&lt;BR /&gt;at org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:84)&lt;BR /&gt;at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:292)&lt;BR /&gt;at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:214)&lt;BR /&gt;at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:157)&lt;BR /&gt;at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin(JdbcTransaction.java:67)&lt;BR /&gt;at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:160)&lt;BR /&gt;at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1426)&lt;BR /&gt;at org.hibernate.ejb.TransactionImpl.begin(TransactionImpl.java:59)&lt;BR /&gt;at com.cloudera.enterprise.AbstractWrappedEntityManager.beginForRollbackAndReadonly(AbstractWrappedEntityManager.java:85)&lt;BR /&gt;at com.cloudera.cmf.persist.CmfEntityManager.beginForRollbackAndReadonly(CmfEntityManager.java:338)&lt;BR /&gt;at com.cloudera.server.web.common.LoginController.getIAPolicyHTML(LoginController.java:105)&lt;BR /&gt;at com.cloudera.server.web.common.LoginController.getRendererForLogin(LoginController.java:90)&lt;BR /&gt;at com.cloudera.server.web.common.LoginController.localLoginForm(LoginController.java:62)&lt;BR /&gt;at com.cloudera.server.web.common.LoginController.loginForm(LoginController.java:55)&lt;BR /&gt;at sun.reflect.GeneratedMethodAccessor4788.invoke(Unknown Source)&lt;BR /&gt;at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)&lt;BR /&gt;at java.lang.reflect.Method.invoke(Method.java:606)&lt;BR /&gt;at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)&lt;BR /&gt;at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)&lt;BR /&gt;at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)&lt;BR /&gt;at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)&lt;BR /&gt;at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)&lt;BR /&gt;at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669)&lt;BR /&gt;at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:574)&lt;BR /&gt;at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)&lt;BR /&gt;at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)&lt;BR /&gt;at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:78)&lt;BR /&gt;at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:131)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at com.jamonapi.http.JAMonServletFilter.doFilter(JAMonServletFilter.java:48)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at com.cloudera.enterprise.JavaMelodyFacade$MonitoringFilter.doFilter(JavaMelodyFacade.java:109)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:167)&lt;BR /&gt;at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)&lt;BR /&gt;at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)&lt;BR /&gt;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)&lt;BR /&gt;at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)&lt;BR /&gt;at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)&lt;BR /&gt;at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)&lt;BR /&gt;at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:767)&lt;BR /&gt;at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)&lt;BR /&gt;at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)&lt;BR /&gt;at org.mortbay.jetty.handler.StatisticsHandler.handle(StatisticsHandler.java:53)&lt;BR /&gt;at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)&lt;BR /&gt;at org.mortbay.jetty.Server.handle(Server.java:326)&lt;BR /&gt;at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)&lt;BR /&gt;at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)&lt;BR /&gt;at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)&lt;BR /&gt;at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)&lt;BR /&gt;at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)&lt;BR /&gt;at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)&lt;BR /&gt;at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
    <pubDate>Fri, 16 Sep 2022 10:38:13 GMT</pubDate>
    <dc:creator>cdhuser111</dc:creator>
    <dc:date>2022-09-16T10:38:13Z</dc:date>
    <item>
      <title>Cannot access Cloudera manager web interface</title>
      <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Cannot-access-Cloudera-manager-web-interface/m-p/44824#M39936</link>
      <description>&lt;P&gt;My Web console on CDH 5.5.1 stopped working. Although the cluster nodes are still functional, and I can submit jobs through spark-submit, the Cloudera Manager interface is dead. Here's the output from the web page.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;This is probably easy to fix, but I'm new.&lt;/P&gt;&lt;P&gt;Thanks for your tips.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;-------------&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;HTTP ERROR 500&lt;/P&gt;&lt;P&gt;Problem accessing /cmf/login. Reason:&lt;BR /&gt;com/mchange/v2/lang/VersionUtils&lt;/P&gt;&lt;P&gt;&lt;BR /&gt;Caused by:&lt;BR /&gt;java.lang.NoClassDefFoundError: com/mchange/v2/lang/VersionUtils&lt;BR /&gt;at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:104)&lt;BR /&gt;at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)&lt;BR /&gt;at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)&lt;BR /&gt;at org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:84)&lt;BR /&gt;at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:292)&lt;BR /&gt;at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:214)&lt;BR /&gt;at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:157)&lt;BR /&gt;at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin(JdbcTransaction.java:67)&lt;BR /&gt;at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:160)&lt;BR /&gt;at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1426)&lt;BR /&gt;at org.hibernate.ejb.TransactionImpl.begin(TransactionImpl.java:59)&lt;BR /&gt;at com.cloudera.enterprise.AbstractWrappedEntityManager.beginForRollbackAndReadonly(AbstractWrappedEntityManager.java:85)&lt;BR /&gt;at com.cloudera.cmf.persist.CmfEntityManager.beginForRollbackAndReadonly(CmfEntityManager.java:338)&lt;BR /&gt;at com.cloudera.server.web.common.LoginController.getIAPolicyHTML(LoginController.java:105)&lt;BR /&gt;at com.cloudera.server.web.common.LoginController.getRendererForLogin(LoginController.java:90)&lt;BR /&gt;at com.cloudera.server.web.common.LoginController.localLoginForm(LoginController.java:62)&lt;BR /&gt;at com.cloudera.server.web.common.LoginController.loginForm(LoginController.java:55)&lt;BR /&gt;at sun.reflect.GeneratedMethodAccessor4788.invoke(Unknown Source)&lt;BR /&gt;at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)&lt;BR /&gt;at java.lang.reflect.Method.invoke(Method.java:606)&lt;BR /&gt;at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)&lt;BR /&gt;at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)&lt;BR /&gt;at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)&lt;BR /&gt;at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)&lt;BR /&gt;at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)&lt;BR /&gt;at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669)&lt;BR /&gt;at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:574)&lt;BR /&gt;at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)&lt;BR /&gt;at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)&lt;BR /&gt;at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:78)&lt;BR /&gt;at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:131)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at com.jamonapi.http.JAMonServletFilter.doFilter(JAMonServletFilter.java:48)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at com.cloudera.enterprise.JavaMelodyFacade$MonitoringFilter.doFilter(JavaMelodyFacade.java:109)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:167)&lt;BR /&gt;at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)&lt;BR /&gt;at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)&lt;BR /&gt;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)&lt;BR /&gt;at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)&lt;BR /&gt;at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)&lt;BR /&gt;at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)&lt;BR /&gt;at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)&lt;BR /&gt;at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:767)&lt;BR /&gt;at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)&lt;BR /&gt;at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)&lt;BR /&gt;at org.mortbay.jetty.handler.StatisticsHandler.handle(StatisticsHandler.java:53)&lt;BR /&gt;at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)&lt;BR /&gt;at org.mortbay.jetty.Server.handle(Server.java:326)&lt;BR /&gt;at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)&lt;BR /&gt;at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)&lt;BR /&gt;at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)&lt;BR /&gt;at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)&lt;BR /&gt;at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)&lt;BR /&gt;at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)&lt;BR /&gt;at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Fri, 16 Sep 2022 10:38:13 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Archives-of-Support-Questions/Cannot-access-Cloudera-manager-web-interface/m-p/44824#M39936</guid>
      <dc:creator>cdhuser111</dc:creator>
      <dc:date>2022-09-16T10:38:13Z</dc:date>
    </item>
    <item>
      <title>Re: Cannot access Cloudera manager web interface</title>
      <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Cannot-access-Cloudera-manager-web-interface/m-p/44848#M39937</link>
      <description>&lt;P&gt;Check the status of your underlying database service. &amp;nbsp;Is it running?&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;If it is running, try to restart the service.&lt;/P&gt;</description>
      <pubDate>Wed, 07 Sep 2016 15:36:41 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Archives-of-Support-Questions/Cannot-access-Cloudera-manager-web-interface/m-p/44848#M39937</guid>
      <dc:creator>rufusayeni</dc:creator>
      <dc:date>2016-09-07T15:36:41Z</dc:date>
    </item>
    <item>
      <title>Re: Cannot access Cloudera manager web interface</title>
      <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Cannot-access-Cloudera-manager-web-interface/m-p/44960#M39938</link>
      <description>&lt;P&gt;After power cycling the host node (hard reboot), things are working well again. Thanks.&lt;/P&gt;</description>
      <pubDate>Sat, 10 Sep 2016 16:34:33 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Archives-of-Support-Questions/Cannot-access-Cloudera-manager-web-interface/m-p/44960#M39938</guid>
      <dc:creator>cdhuser111</dc:creator>
      <dc:date>2016-09-10T16:34:33Z</dc:date>
    </item>
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