hadoop/hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/resources/httpfs-default.xml

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
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  Licensed under the Apache License, Version 2.0 (the "License");
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<configuration>

  <!-- HttpFSServer Server -->

  <property>
    <name>httpfs.buffer.size</name>
    <value>4096</value>
    <description>
      The buffer size used by a read/write request when streaming data from/to
      HDFS.
    </description>
  </property>

  <!-- HttpFSServer Services -->

  <property>
    <name>httpfs.services</name>
    <value>
      org.apache.hadoop.lib.service.instrumentation.InstrumentationService,
      org.apache.hadoop.lib.service.scheduler.SchedulerService,
      org.apache.hadoop.lib.service.security.GroupsService,
      org.apache.hadoop.lib.service.security.ProxyUserService,
      org.apache.hadoop.lib.service.hadoop.FileSystemAccessService
    </value>
    <description>
      Services used by the httpfs server.
    </description>
  </property>

  <!-- Kerberos Configuration -->

  <property>
    <name>kerberos.realm</name>
    <value>LOCALHOST</value>
    <description>
      Kerberos realm, used only if Kerberos authentication is used between
      the clients and httpfs or between HttpFS and HDFS.

      This property is only used to resolve other properties within this
      configuration file.
    </description>
  </property>

  <!-- HttpFSServer Security Configuration -->

  <property>
    <name>httpfs.hostname</name>
    <value>${httpfs.http.hostname}</value>
    <description>
      Property used to synthetize the HTTP Kerberos principal used by httpfs.

      This property is only used to resolve other properties within this
      configuration file.
    </description>
  </property>

  <property>
    <name>httpfs.authentication.type</name>
    <value>simple</value>
    <description>
      Defines the authentication mechanism used by httpfs for its HTTP clients.

      Valid values are 'simple' and 'kerberos'.

      If using 'simple' HTTP clients must specify the username with the
      'user.name' query string parameter.

      If using 'kerberos' HTTP clients must use HTTP SPNEGO.
    </description>
  </property>

  <property>
    <name>httpfs.authentication.kerberos.principal</name>
    <value>HTTP/${httpfs.hostname}@${kerberos.realm}</value>
    <description>
      The HTTP Kerberos principal used by HttpFS in the HTTP endpoint.

      The HTTP Kerberos principal MUST start with 'HTTP/' per Kerberos
      HTTP SPENGO specification.
    </description>
  </property>

  <property>
    <name>httpfs.authentication.kerberos.keytab</name>
    <value>${user.home}/httpfs.keytab</value>
    <description>
      The Kerberos keytab file with the credentials for the
      HTTP Kerberos principal used by httpfs in the HTTP endpoint.
    </description>
  </property>

  <!-- HttpFSServer proxy user Configuration -->

  <property>
    <name>httpfs.proxyuser.#USER#.hosts</name>
    <value>*</value>
    <description>
      List of hosts the '#USER#' user is allowed to perform 'doAs'
      operations.

      The '#USER#' must be replaced with the username o the user who is
      allowed to perform 'doAs' operations.

      The value can be the '*' wildcard or a list of hostnames.

      For multiple users copy this property and replace the user name
      in the property name.
    </description>
  </property>

  <property>
    <name>httpfs.proxyuser.#USER#.groups</name>
    <value>*</value>
    <description>
      List of groups the '#USER#' user is allowed to impersonate users
      from to perform 'doAs' operations.

      The '#USER#' must be replaced with the username o the user who is
      allowed to perform 'doAs' operations.

      The value can be the '*' wildcard or a list of groups.

      For multiple users copy this property and replace the user name
      in the property name.
    </description>
  </property>

  <!-- FileSystemAccess Namenode Configuration -->

  <property>
    <name>namenode.hostname</name>
    <value>localhost</value>
    <description>
      The HDFS Namenode host the httpfs server connects to perform file
      system operations.

      This property is only used to resolve other properties within this
      configuration file.
    </description>
  </property>

  <property>
    <name>httpfs.hadoop.conf:fs.default.name</name>
    <value>hdfs://${namenode.hostname}:8020</value>
    <description>
      The HDFS Namenode URI the httpfs server connects to perform file
      system operations.
    </description>
  </property>

  <!-- FileSystemAccess Namenode Security Configuration -->

  <property>
    <name>httpfs.hadoop.authentication.type</name>
    <value>simple</value>
    <description>
      Defines the authentication mechanism used by httpfs to connect to
      the HDFS Namenode.

      Valid values are 'simple' and 'kerberos'.
    </description>
  </property>

  <property>
    <name>httpfs.hadoop.authentication.kerberos.keytab</name>
    <value>${user.home}/httpfs.keytab</value>
    <description>
      The Kerberos keytab file with the credentials for the
      Kerberos principal used by httpfs to connect to the HDFS Namenode.
    </description>
  </property>

  <property>
    <name>httpfs.hadoop.authentication.kerberos.principal</name>
    <value>${user.name}/${httpfs.hostname}@${kerberos.realm}</value>
    <description>
      The Kerberos principal used by httpfs to connect to the HDFS Namenode.
    </description>
  </property>

  <property>
    <name>httpfs.hadoop.conf:dfs.namenode.kerberos.principal</name>
    <value>hdfs/${namenode.hostname}@${kerberos.realm}</value>
    <description>
      The HDFS Namenode Kerberos principal.
    </description>
  </property>

</configuration>