Setting up the secure store
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- Hadoop KMS based backing store: Secure Store uses the KMS provider configured for the cluster. [Please look at Hadoop Key Management Server]
- File-based backing store: Secure data is stored with a Java JCEKS based implementation.
To pick the provider the following property needs to be set, the value could either be "kms" for Hadoop KMS based provider or "file" of Java JCEKS based provider. Both without quotes.
File The File-based provider is supported in the InMemory and Standalone modes while Hadoop KMS based provider is supported in the distributed mode.
To use secure store in distributed mode:
<property>
<name>security.store.provider</name>
<value>kms</value>
<description>
Backend provider for the secure store
</description>
</property>
To use secure store in standalone mode:
<property>
<name>security.store.provider</name>
<value>file</value>
<description>
Backend provider for the secure store
</description>
</property>
If the cluster is set to use kerberos for authentication, then using the Hadoop KMS based provider, then /etc/hadoop/kms-acls.xml needs to be updated to include users with appropriate permissions. For more details on how to edit that file please look at Hadoop Key Management Server.
If using the file-based provider, the password to control access to the file needs to be set. To set the password please add the following property to your cdap-security.xml. The file (cdap-security.xml ) needs to be created if not already present.
<property>
...
<name>security.store.file.password</name>
<value>your password</value>
<description>
Password to access the key store
</description>
</property>
If the file based provider is selected, the path and the filename of the backing file can be configured using , these settings are optional.
<property>
<name>security.store.file.path</name>
<value>${local.data.dir}/store</value>
<description>
Location of the encrypted file which holds the secure store entries
</description>
</property>
and
<property>
<name>security.store.file.name</name>
<value>securestore</value>
<description>
Name of the secure store file
</description>
</property>
Accessing the store
There are two APIs that enable writing to and reading from the store.
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