Hadoop Security Guide
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mapred-site.xml

You must add the following information to the mapred-site.xml file on every host in your cluster:

Table 2.14. mapred-site.xml Property Settings

Property Name

Property Value

Description

mapreduce.jobhistory.keytab

/etc/security/keytabs/jhs.service.keytab

Kerberos keytab file for the MapReduce JobHistory Server.

mapreduce.jobhistory.principal

jhs/_HOST@TODO-KERBEROS-DOMAIN

Kerberos principal name for the MapReduce JobHistory Server.

mapreduce.jobhistory.webapp.address

TODO-JOBHISTORYNODE-HOSTNAME:19888

MapReduce JobHistory Server Web UI host:port

mapreduce.jobhistory.webapp.https. address

TODO-JOBHISTORYNODE-HOSTNAME:19889

MapReduce JobHistory Server HTTPS Web UI host:port

mapreduce.jobhistory.webapp.spnego-keytab-file

/etc/security/keytabs/spnego.service.keytab

Kerberos keytab file for the spnego service.

mapreduce.jobhistory.webapp.spnego-principal

HTTP/_HOST@TODO-KERBEROS-DOMAIN

Kerberos principal name for the spnego service.


Following is the XML for these entries:

<property>
     <name>mapreduce.jobhistory.keytab</name>
     <value>/etc/security/keytabs/jhs.service.keytab</value>
</property> 
 
<property>
     <name>mapreduce.jobhistory.principal</name>
     <value>jhs/_HOST@TODO-KERBEROS-DOMAIN</value>
</property> 
 
<property>
     <name>mapreduce.jobhistory.webapp.address</name>
     <value>TODO-JOBHISTORYNODE-HOSTNAME:19888</value>
</property> 
 
<property>
     <name>mapreduce.jobhistory.webapp.https.address</name>
     <value>TODO-JOBHISTORYNODE-HOSTNAME:19889</value>
</property> 
 
<property>
     <name>mapreduce.jobhistory.webapp.spnego-keytab-file</name>
     <value>/etc/security/keytabs/spnego.service.keytab</value>
</property> 
 
<property>
     <name>mapreduce.jobhistory.webapp.spnego-principal</name>
     <value>HTTP/_HOST@TODO-KERBEROS-DOMAIN</value>
</property>