Thanks Larry. On Fri, Jul 3, 2015 at 2:41 AM, larry mccay <[email protected]> wrote:
> We need a separate jira for the NullPointerException. > What you have in KNOX-563 should be discussed on the user@ list. > As I indicated in the jira - you need to supply credentials and make sure > that the LDAP server is running. > > I will close KNOX-563 and we can continue to discuss your problems here on > the mailing list. > > On Thu, Jul 2, 2015 at 4:49 PM, Aneela Saleem <[email protected]> > wrote: > >> Hi Kevin, >> >> Please follow this URL >> >> https://issues.apache.org/jira/browse/KNOX-563 >> >> On Fri, Jul 3, 2015 at 1:22 AM, Kevin Minder < >> [email protected]> wrote: >> >>> Anella or Larry, >>> Can one of you please file a jira about the NPE. Knox should certainly >>> handle that much more gracefully. That would be very much appreciated. >>> Please attache the topology file (e.g. Sandbox.xml) that resulted in this >>> error if possible. >>> Kevin. >>> >>> From: larry mccay <[email protected]> >>> Reply-To: "[email protected]" <[email protected]> >>> Date: Thursday, July 2, 2015 at 3:37 PM >>> To: "[email protected]" <[email protected]> >>> Subject: Re: Knox - Hostname was NOT found >>> >>> You are probably getting far enough now to be hitting errors due to >>> your lack of providers. Start with sandbox.xml config and start the ldap >>> server. See the apache docs for details. >>> On Jul 2, 2015 3:14 PM, "Aneela Saleem" <[email protected]> wrote: >>> >>>> Hey Larry, >>>> >>>> i got the following error >>>> >>>> <title>Error 500 Server Error</title> >>>> </head> >>>> <body><h2>HTTP ERROR 500</h2> >>>> <p>Problem accessing /gateway/cluster1/webhdfs/v1/. >>>> >>>> And the gateway.log file contains: >>>> >>>> 2015-07-03 00:09:04,560 ERROR hadoop.gateway >>>> (AbstractGatewayFilter.java:doFilter(69)) - Failed to execute filter: >>>> java.lang.NullPointerException >>>> 2015-07-03 00:09:04,560 ERROR hadoop.gateway >>>> (GatewayFilter.java:doFilter(135)) - Gateway processing failed: >>>> javax.servlet.ServletException: java.lang.NullPointerException >>>> javax.servlet.ServletException: java.lang.NullPointerException >>>> at >>>> org.apache.hadoop.gateway.filter.AbstractGatewayFilter.doFilter(AbstractGatewayFilter.java:70) >>>> at >>>> org.apache.hadoop.gateway.GatewayFilter$Holder.doFilter(GatewayFilter.java:315) >>>> at >>>> org.apache.hadoop.gateway.GatewayFilter$Chain.doFilter(GatewayFilter.java:215) >>>> at >>>> org.apache.hadoop.gateway.GatewayFilter.doFilter(GatewayFilter.java:129) >>>> at >>>> org.apache.hadoop.gateway.GatewayServlet.service(GatewayServlet.java:121) >>>> at >>>> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) >>>> at >>>> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:501) >>>> at >>>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) >>>> at >>>> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557) >>>> at >>>> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) >>>> at >>>> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086) >>>> at >>>> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428) >>>> at >>>> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) >>>> at >>>> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020) >>>> at >>>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) >>>> at >>>> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255) >>>> at >>>> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) >>>> at org.eclipse.jetty.server.Server.handle(Server.java:370) >>>> at >>>> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494) >>>> at >>>> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:971) >>>> at >>>> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1033) >>>> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644) >>>> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) >>>> at >>>> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) >>>> at org.eclipse.jetty.io.nio.SslConnection.handle(SslConnection.java:196) >>>> at >>>> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667) >>>> at >>>> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) >>>> at >>>> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) >>>> at >>>> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) >>>> at java.lang.Thread.run(Thread.java:745) >>>> Caused by: java.lang.NullPointerException >>>> >>>> >>>> >>>> >>>> On Fri, Jul 3, 2015 at 12:07 AM, larry mccay <[email protected]> >>>> wrote: >>>> >>>>> Try lower case webhdfs as in: >>>>> >>>>> >>>>> 'https://localhost:8443/gateway/cluster1/webhdfs/v1/?op=GETHOMEDIRECTORY' >>>>> >>>>> >>>>> On Thu, Jul 2, 2015 at 2:59 PM, Aneela Saleem <[email protected]> >>>>> wrote: >>>>> >>>>>> Dear larry, >>>>>> >>>>>> The gateway.log file contains the following logs: >>>>>> >>>>>> 2015-07-02 23:43:16,391 INFO hadoop.gateway >>>>>> (GatewayServer.java:handleCreateDeployment(427)) - Deploying topology >>>>>> cluster1 to >>>>>> /home/hduser/knox-0.6.0/bin/../data/deployments/cluster1.war.14e501479a0 >>>>>> 2015-07-02 23:43:16,392 INFO hadoop.gateway >>>>>> (DeploymentFactory.java:createDeployment(82)) - Configured services >>>>>> directory is /home/hduser/knox-0.6.0/bin/../data/services >>>>>> 2015-07-02 23:43:16,428 INFO hadoop.gateway >>>>>> (DefaultGatewayServices.java:initializeContribution(180)) - Credential >>>>>> store found for the cluster: cluster1 - no need to create one. >>>>>> 2015-07-02 23:44:40,453 WARN hadoop.gateway >>>>>> (GatewayFilter.java:doFilter(152)) - Failed to match path >>>>>> /WEBHDFS/v1?op=GETHOMEDIRECTORY >>>>>> 2015-07-02 23:44:51,722 WARN hadoop.gateway >>>>>> (GatewayFilter.java:doFilter(152)) - Failed to match path >>>>>> /WEBHDFS/v1?op=GETHOMEDIRECTORY >>>>>> 2015-07-02 23:45:30,783 WARN hadoop.gateway >>>>>> (GatewayFilter.java:doFilter(152)) - Failed to match path >>>>>> /WEBHDFS/v1?op=GETHOMEDIRECTORY >>>>>> >>>>>> And i'm just a beginner. I'm trying to configure Knox Topology to >>>>>> connect to HDFS, using default services provided. And i'm validating >>>>>> connection to services. >>>>>> >>>>>> On Thu, Jul 2, 2015 at 11:50 PM, larry mccay <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> Please check the {GATEWAY_HOME}/logs/gateway.log file for errors >>>>>>> during deployment. >>>>>>> >>>>>>> I notice that you have no providers described in cluster1.xml - >>>>>>> this may be the root of your problem. >>>>>>> I don't think that I have ever even tried that. >>>>>>> >>>>>>> What are you expecting the authentication behavior to be there? >>>>>>> >>>>>>> >>>>>>> On Thu, Jul 2, 2015 at 2:27 PM, Aneela Saleem < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> ${KNOX_HOME}/knox/conf/topologies has the following contents: >>>>>>>> >>>>>>>> admin.xml cluster1.xml README sandbox.xml >>>>>>>> >>>>>>>> cluster1.xml is the topology descriptor file created by me. >>>>>>>> >>>>>>>> cluster1.xml has following contents: >>>>>>>> >>>>>>>> <topology> >>>>>>>> <gateway> >>>>>>>> </gateway> >>>>>>>> <service> >>>>>>>> <role>NAMENODE</role> >>>>>>>> <url>hdfs:// namenode-host :8020</url> >>>>>>>> </service> >>>>>>>> >>>>>>>> <service> >>>>>>>> <role>JOBTRACKER</role> >>>>>>>> <url>rpc:// jobtracker-host :8050</url> >>>>>>>> </service> >>>>>>>> >>>>>>>> <service> >>>>>>>> <role>RESOURCEMANAGER</role> >>>>>>>> <url>http://red3:8088/ws</url> >>>>>>>> </service> >>>>>>>> >>>>>>>> <service> >>>>>>>> <role>WEBHDFS</role> >>>>>>>> <url>http://localhost:50070/webhdfs</url> >>>>>>>> </service> >>>>>>>> >>>>>>>> <service> >>>>>>>> <role>WEBHCAT</role> >>>>>>>> <url>http://webcat-host :50111/templeton</url> >>>>>>>> </service> >>>>>>>> >>>>>>>> <service> >>>>>>>> <role>OOZIE</role> >>>>>>>> <url>http://oozie-host :11000/oozie</url> >>>>>>>> </service> >>>>>>>> >>>>>>>> <service> >>>>>>>> <role>WEBHBASE</role> >>>>>>>> <url>http://webhbase-host :60080</url> >>>>>>>> </service> >>>>>>>> </topology> >>>>>>>> >>>>>>>> >>>>>>>> admin.xml has default contents. I did not make any changes. >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> On Thu, Jul 2, 2015 at 11:15 PM, Steve Howard < >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> To be clear, the error isn't hostname not found (that just means >>>>>>>>> it wasn't in the DNS cache on your computer), it's that the URL can't >>>>>>>>> be >>>>>>>>> found by the knox server. >>>>>>>>> >>>>>>>>> Can you post the contents of your >>>>>>>>> ${KNOX_HOME}/knox/conf/topologies directory? >>>>>>>>> >>>>>>>>> On Thu, Jul 2, 2015 at 1:50 PM, Aneela Saleem < >>>>>>>>> [email protected]> wrote: >>>>>>>>> >>>>>>>>>> Hi, >>>>>>>>>> >>>>>>>>>> I'm trying to connect to HDFS through Knox gateway. I run the >>>>>>>>>> following command: >>>>>>>>>> >>>>>>>>>> curl -vk >>>>>>>>>> https://localhost:8443/gateway/cluster1/WEBHDFS/v1?op=GETHOMEDIRECTORY >>>>>>>>>> >>>>>>>>>> when i run this command i get the following error: >>>>>>>>>> >>>>>>>>>> * Hostname was NOT found in DNS cache >>>>>>>>>> * Trying 127.0.0.1... >>>>>>>>>> * Connected to localhost (127.0.0.1) port 8443 (#0) >>>>>>>>>> * successfully set certificate verify locations: >>>>>>>>>> * CAfile: none >>>>>>>>>> CApath: /etc/ssl/certs >>>>>>>>>> * SSLv3, TLS handshake, Client hello (1): >>>>>>>>>> * SSLv3, TLS handshake, Server hello (2): >>>>>>>>>> * SSLv3, TLS handshake, CERT (11): >>>>>>>>>> * SSLv3, TLS handshake, Server key exchange (12): >>>>>>>>>> * SSLv3, TLS handshake, Server finished (14): >>>>>>>>>> * SSLv3, TLS handshake, Client key exchange (16): >>>>>>>>>> * SSLv3, TLS change cipher, Client hello (1): >>>>>>>>>> * SSLv3, TLS handshake, Finished (20): >>>>>>>>>> * SSLv3, TLS change cipher, Client hello (1): >>>>>>>>>> * SSLv3, TLS handshake, Finished (20): >>>>>>>>>> * SSL connection using ECDHE-RSA-DES-CBC3-SHA >>>>>>>>>> * Server certificate: >>>>>>>>>> * subject: C=US; ST=Test; L=Test; O=Hadoop; OU=Test; CN=localhost >>>>>>>>>> * start date: 2015-06-29 21:39:18 GMT >>>>>>>>>> * expire date: 2016-06-28 21:39:18 GMT >>>>>>>>>> * issuer: C=US; ST=Test; L=Test; O=Hadoop; OU=Test; CN=localhost >>>>>>>>>> * SSL certificate verify result: self signed certificate (18), >>>>>>>>>> continuing anyway. >>>>>>>>>> > GET /gateway/cluster1/WEBHDFS/v1?op=GETHOMEDIRECTORY HTTP/1.1 >>>>>>>>>> > User-Agent: curl/7.35.0 >>>>>>>>>> > Host: localhost:8443 >>>>>>>>>> > Accept: */* >>>>>>>>>> > >>>>>>>>>> < HTTP/1.1 404 Not Found >>>>>>>>>> < Content-Length: 0 >>>>>>>>>> * Server Jetty(8.1.14.v20131031) is not blacklisted >>>>>>>>>> < Server: Jetty(8.1.14.v20131031) >>>>>>>>>> < >>>>>>>>>> * Connection #0 to host localhost left intact >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Can anyone please help me in tackling this issue? >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >> >
