Support Questions

v-weilwu · ‎09-28-2018

Following this instruction:

https://knox.apache.org/books/knox-1-1-0/user-guide.html#8+-+Access+Hadoop+with+Knox

After executing this command:

curl -i -k -u guest:guest-password -X GET \
    'https://localhost:8443/gateway/sandbox/webhdfs/v1/?op=LISTSTATUS'

Here is the error message:

HTTP/1.1 500 Server Error Date: Fri, 28 Sep 2018 05:41:00 GMT Set-Cookie: JSESSIONID=1a9wu52uf1ys21txpaqvzg66bs;Path=/gateway/sandbox;Secure;HttpOnly Set-Cookie: rememberMe=deleteMe; Path=/gateway/sandbox; Max-Age=0; Expires=Thu, 27-Sep-2018 05:41:00 GMT Content-Type: text/html; charset=ISO-8859-1 Cache-Control: must-revalidate,no-cache,no-store Content-Length: 317 Connection: close Server: Jetty(9.2.22.v20170606) <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <title>Error 500 Server Error</title> </head> <body><h2>HTTP ERROR 500</h2> <p>Problem accessing /gateway/sandbox/webhdfs/v1/. Reason: <pre> Server Error</pre></p><hr><i><small>Powered by Jetty://</small></i><hr/> </body> </html>

Here is the message from the log:

Caused by: org.apache.shiro.subject.ExecutionException: java.security.PrivilegedActionException: java.io.IOException: Service connectivity error. at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:385) at org.apache.knox.gateway.filter.ShiroSubjectIdentityAdapter.doFilter(ShiroSubjectIdentityAdapter.java:72) at org.apache.knox.gateway.GatewayFilter$Holder.doFilter(GatewayFilter.java:372) at org.apache.knox.gateway.GatewayFilter$Chain.doFilter(GatewayFilter.java:272) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) ... 52 more Caused by: java.security.PrivilegedActionException: java.io.IOException: Service connectivity error. at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.knox.gateway.filter.ShiroSubjectIdentityAdapter$CallableChain.call(ShiroSubjectIdentityAdapter.java:143) at org.apache.knox.gateway.filter.ShiroSubjectIdentityAdapter$CallableChain.call(ShiroSubjectIdentityAdapter.java:75) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) ... 58 more Caused by: java.io.IOException: Service connectivity error. at org.apache.knox.gateway.dispatch.DefaultDispatch.executeOutboundRequest(DefaultDispatch.java:148) at org.apache.knox.gateway.dispatch.DefaultDispatch.executeRequest(DefaultDispatch.java:116) at org.apache.knox.gateway.dispatch.DefaultDispatch.doGet(DefaultDispatch.java:278) at org.apache.knox.gateway.dispatch.GatewayDispatchFilter$GetAdapter.doMethod(GatewayDispatchFilter.java:170) at org.apache.knox.gateway.dispatch.GatewayDispatchFilter.doFilter(GatewayDispatchFilter.java:122) at org.apache.knox.gateway.filter.AbstractGatewayFilter.doFilter(AbstractGatewayFilter.java:61) at org.apache.knox.gateway.GatewayFilter$Holder.doFilter(GatewayFilter.java:372) at org.apache.knox.gateway.GatewayFilter$Chain.doFilter(GatewayFilter.java:272) at org.apache.knox.gateway.identityasserter.common.filter.AbstractIdentityAssertionFilter.doFilterInternal(AbstractIdentityAssertionFilter.java:196) at org.apache.knox.gateway.identityasserter.common.filter.AbstractIdentityAssertionFilter.continueChainAsPrincipal(AbstractIdentityAssertionFilter.java:153) at org.apache.knox.gateway.identityasserter.common.filter.CommonIdentityAssertionFilter.doFilter(CommonIdentityAssertionFilter.java:90) at org.apache.knox.gateway.GatewayFilter$Holder.doFilter(GatewayFilter.java:372) at org.apache.knox.gateway.GatewayFilter$Chain.doFilter(GatewayFilter.java:272) at org.apache.knox.gateway.filter.rewrite.api.UrlRewriteServletFilter.doFilter(UrlRewriteServletFilter.java:60) at org.apache.knox.gateway.filter.AbstractGatewayFilter.doFilter(AbstractGatewayFilter.java:61) at org.apache.knox.gateway.GatewayFilter$Holder.doFilter(GatewayFilter.java:372) at org.apache.knox.gateway.GatewayFilter$Chain.doFilter(GatewayFilter.java:272) at org.apache.knox.gateway.filter.ShiroSubjectIdentityAdapter$CallableChain$1.run(ShiroSubjectIdentityAdapter.java:91) at org.apache.knox.gateway.filter.ShiroSubjectIdentityAdapter$CallableChain$1.run(ShiroSubjectIdentityAdapter.java:88) ... 65 more

Please help!!
Thanks!

v-weilwu · ‎09-28-2018

Please help thanks!

pzampino · ‎09-28-2018

Is your sandbox topology pointing to your cluster correctly? What does your gateway-audit.log show?

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Access hadoop with knox http 500 error