[HADOOP-14708] FsckServlet can not create SaslRpcClient with auth KERBEROS_SSL

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.7.3, 2.8.1, 3.0.0-alpha3
• Component/s: security
• Assignee: Lantao Jin
• Reporter: Lantao Jin
• Created: 01/Aug/17 09:37
• Updated: 02/Oct/19 17:15

Description

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

  /** 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);
  }

But when setup SaslConnection with server, KERBEROS_SSL will failed to create SaslClient instance. See SaslRpcClient.java

private SaslClient createSaslClient(SaslAuth authType)
      throws SaslException, IOException {
      ....
      case KERBEROS: {
        if (ugi.getRealAuthenticationMethod().getAuthMethod() !=
            AuthMethod.KERBEROS) {
          return null; // client isn't using kerberos
        }

Issue Links

• is duplicated by: HDFS-12236 FsckServlet can not create SaslRpcClient with auth KERBEROS_SSL