Hello @Nathan ,
Welcome to the Microsoft Q&A platform.
We don't recommend adding more SSH users in HDInsight clusters, but you can achieve this multiuser access by creating HDInsight clusters with ESP connected to a domain so that domain users can use their domain credentials to authenticate with the clusters and run big data jobs.
Note: Enterprise Security Package (ESP) for Azure HDInsight gives you access to Active Directory-based authentication, multiuser support, and role-based access control for your Apache HBase clusters in Azure. HDInsight ESP clusters enable organizations that adhere to strict corporate security policies to process sensitive data securely.
For more details, refer:
Create and configure Enterprise Security Package clusters in Azure HDInsight
Tutorial: Configure Apache HBase policies in HDInsight with Enterprise Security Package
Hope this helps. Do let us know if you any further queries.
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