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https://issues.apache.org/jira/browse/HADOOP-14708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16114841#comment-16114841
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Wei-Chiu Chuang edited comment on HADOOP-14708 at 8/4/17 7:06 PM:
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[~cltlfcjin] thanks for reporting the issue.
However, I don't have the problem you described. The fsck command line tool as
a client does not have problem authenticating with NN on my cluster.
Furthermore, the log you posted suggests the problem is the authentication
between the NameNode FsckServlet (which starts a dfsclient to connect to NN)
and NameNode.
If there's a bug, it is strictly a HDFS RPC authentication bug, nothing to do
with JspHelper. Because it's a HDFS RPC, it should have not used KERBEROS_SSL
at all.
Can you check if you have the correct client authentication configuration in
the NameNode configuration?
was (Author: jojochuang):
[~cltlfcjin] thanks for reporting the issue.
However, I don't have the problem you described. The fsck command line tool as
a client does not have problem authenticating with NN on my cluster.
Furthermore, the log you posted suggests the problem is the authentication
between the NameNode FsckServlet (which starts a dfsclient to connect to NN)
and NameNode.
If there's a bug, it is strictly a HDFS RPC authentication bug, nothing to do
with JspHelper. Because it's a HDFS RPC, it should have not used KERBEROS_SSL
at all.
> FsckServlet can not create SaslRpcClient with auth KERBEROS_SSL
> ---------------------------------------------------------------
>
> Key: HADOOP-14708
> URL: https://issues.apache.org/jira/browse/HADOOP-14708
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.7.3, 2.8.1, 3.0.0-alpha3
> Reporter: Lantao Jin
> Attachments: FSCK.log, HADOOP-14708.001.patch
>
>
> FSCK started by xx (auth:KERBEROS_SSL) failed with exception msg "fsck
> encountered internal errors!"
> FSCK use FSCKServlet to submit RPC to NameNode, it use {{KERBEROS_SSL}} as
> its {{AuthenticationMethod}} in {{JspHelper.java}}
> {code}
> /** Same as getUGI(context, request, conf, KERBEROS_SSL, true). */
> public static UserGroupInformation getUGI(ServletContext context,
> HttpServletRequest request, Configuration conf) throws IOException {
> return getUGI(context, request, conf, AuthenticationMethod.KERBEROS_SSL,
> true);
> }
> {code}
> But when setup SaslConnection with server, KERBEROS_SSL will failed to create
> SaslClient instance. See {{SaslRpcClient.java}}
> {code}
> private SaslClient createSaslClient(SaslAuth authType)
> throws SaslException, IOException {
> ....
> case KERBEROS: {
> if (ugi.getRealAuthenticationMethod().getAuthMethod() !=
> AuthMethod.KERBEROS) {
> return null; // client isn't using kerberos
> }
> {code}
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