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https://issues.apache.org/jira/browse/YARN-4006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15294670#comment-15294670
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Greg Senia commented on YARN-4006:
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[~lmccay] or [~aw] let me know what I need to do to get this fix committed. My
previous employer is who ran into this issue back when we migrated to HDP 2.2
and enabled ATS. I attempted to get HWX to take the fix not sure what the
issue is or why folks are against having an AltAuth option with ATS.
Fortunately my new employer is using kerberos throughout their entire
environment. My past employer took this fix into HDP 2.3 and compiled it in
since it has not been committed into the mainline.
> YARN ATS Alternate Kerberos HTTP Authentication Changes
> -------------------------------------------------------
>
> Key: YARN-4006
> URL: https://issues.apache.org/jira/browse/YARN-4006
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: security, timelineserver
> Affects Versions: 2.5.0, 2.6.0, 2.7.0, 2.5.1, 2.6.1, 2.8.0, 2.7.1, 2.7.2
> Reporter: Greg Senia
> Assignee: Greg Senia
> Priority: Blocker
> Attachments: YARN-4006-branch-trunk.patch,
> YARN-4006-branch2.6.0.patch, sample-ats-alt-auth.patch
>
>
> When attempting to use The Hadoop Alternate Authentication Classes. They do
> not exactly work with what was built with YARN-1935.
> I went ahead and made the following changes to support using a Custom
> AltKerberos DelegationToken custom class.
> Changes to: TimelineAuthenticationFilterInitializer.class
> {code}
> String authType = filterConfig.get(AuthenticationFilter.AUTH_TYPE);
> LOG.info("AuthType Configured: "+authType);
> if (authType.equals(PseudoAuthenticationHandler.TYPE)) {
> filterConfig.put(AuthenticationFilter.AUTH_TYPE,
> PseudoDelegationTokenAuthenticationHandler.class.getName());
> LOG.info("AuthType: PseudoDelegationTokenAuthenticationHandler");
> } else if (authType.equals(KerberosAuthenticationHandler.TYPE) ||
> (UserGroupInformation.isSecurityEnabled() &&
> conf.get("hadoop.security.authentication").equals(KerberosAuthenticationHandler.TYPE)))
> {
> if (!(authType.equals(KerberosAuthenticationHandler.TYPE))) {
> filterConfig.put(AuthenticationFilter.AUTH_TYPE,
> authType);
> LOG.info("AuthType: "+authType);
> } else {
> filterConfig.put(AuthenticationFilter.AUTH_TYPE,
> KerberosDelegationTokenAuthenticationHandler.class.getName());
> LOG.info("AuthType: KerberosDelegationTokenAuthenticationHandler");
> }
> // Resolve _HOST into bind address
> String bindAddress = conf.get(HttpServer2.BIND_ADDRESS);
> String principal =
> filterConfig.get(KerberosAuthenticationHandler.PRINCIPAL);
> if (principal != null) {
> try {
> principal = SecurityUtil.getServerPrincipal(principal, bindAddress);
> } catch (IOException ex) {
> throw new RuntimeException(
> "Could not resolve Kerberos principal name: " + ex.toString(),
> ex);
> }
> filterConfig.put(KerberosAuthenticationHandler.PRINCIPAL,
> principal);
> }
> }
> {code}
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