ambari-server/src/main/resources/common-services/KNOX/0.5.0.2.2/configuration/knox-env.xml

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
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<configuration supports_final="false" supports_adding_forbidden="true">
  <!-- knox-env.sh -->
  <property require-input="true">
    <name>knox_master_secret</name>
    <value/>
    <display-name>Knox Master Secret</display-name>
    <property-type>PASSWORD</property-type>
    <description>password to use as the master secret</description>
    <value-attributes>
      <type>password</type>
      <editable-only-at-install>true</editable-only-at-install>
      <overridable>false</overridable>
    </value-attributes>
    <on-ambari-upgrade add="true"/>
  </property>
  <property>
    <name>knox_user</name>
    <display-name>Knox User</display-name>
    <value>knox</value>
    <property-type>USER</property-type>
    <description>Knox Username.</description>
    <value-attributes>
      <type>user</type>
      <overridable>false</overridable>
    </value-attributes>
    <on-ambari-upgrade add="true"/>
  </property>
  <property>
    <name>knox_group</name>
    <display-name>Knox Group</display-name>
    <value>knox</value>
    <property-type>GROUP</property-type>
    <description>Knox Group.</description>
    <value-attributes>
      <type>user</type>
    </value-attributes>
    <on-ambari-upgrade add="true"/>
  </property>
  <property>
    <name>knox_pid_dir</name>
    <value>/var/run/knox</value>
    <display-name>Knox PID dir</display-name>
    <description>Knox PID dir.</description>
    <value-attributes>
      <type>directory</type>
      <editable-only-at-install>true</editable-only-at-install>
      <overridable>false</overridable>
    </value-attributes>
    <on-ambari-upgrade add="true"/>
  </property>
  <property>
    <name>knox_principal_name</name>
    <description>Knox principal name</description>
    <property-type>KERBEROS_PRINCIPAL</property-type>
    <on-ambari-upgrade add="true"/>
  </property>
  <property>
    <name>knox_keytab_path</name>
    <description>Knox keytab path</description>
    <on-ambari-upgrade add="true"/>
  </property>
</configuration>