Hive Metastore is a critical component of the Hadoop ecosystem that stores metadata about Hive tables, partitions, columns, and other related information. To secure the Hive Metastore, it is recommended to integrate it with Kerberos authentication.
Prerequisites
- A Kerberos KDC (Key Distribution Center) server is set up and configured.
- The Hive server and clients have Kerberos client libraries installed and configured.
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Create a Kerberos principal for the Hive Metastore service:
kadmin.local -q "addprinc -randkey hive/hive-metastore.example.com@EXAMPLE.COM"
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Create a keytab file for the Hive Metastore service principal:
kadmin.local -q "ktadd -k /etc/hive/conf/hive.keytab hive/hive-metastore.example.com@EXAMPLE.COM"
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Configure the Hive Metastore to use Kerberos authentication:
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Restart the Hive Metastore service for the changes to take effect.
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Obtain a Kerberos ticket for a user:
kinit user@EXAMPLE.COM
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Connect to the Hive Metastore using the Kerberos-authenticated user:
beeline -u "jdbc:hive2://hive-metastore.example.com:10000/;principal=hive/hive-metastore.example.com@EXAMPLE.COM"
If the connection is successful, the Hive Metastore is now configured to use Kerberos authentication.