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https://issues.apache.org/jira/browse/HDDS-17613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng reassigned HDDS-17613:
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Assignee: Siyao Meng
> Accept Datanode protocols only from the Datanode principal with service
> authorization
> -------------------------------------------------------------------------------------
>
> Key: HDDS-17613
> URL: https://issues.apache.org/jira/browse/HDDS-17613
> Project: Apache Ozone
> Issue Type: Improvement
> Components: Security
> Reporter: Siyao Meng
> Assignee: Siyao Meng
> Priority: Major
>
> With {{hadoop.security.authorization}} enabled,
> {{StorageContainerDatanodeProtocol}} (SCM) and {{ReconDatanodeProtocol}}
> (Recon) accept any principal allowed by their service ACL. HDFS
> {{DatanodeProtocol}} also sets {{clientPrincipal =
> dfs.datanode.kerberos.principal}} in its {{@KerberosInfo}}, so the NameNode
> accepts that protocol only from the DataNode principal.
> Add {{clientPrincipal = hdds.datanode.kerberos.principal}} to the
> {{@KerberosInfo}} of both protocols.
> This only takes effect with Kerberos and
> {{hadoop.security.authorization=true}}. Hadoop resolves {{_HOST}} in the
> principal from the caller's address and requires an exact match, so a
> Datanode that reaches SCM or Recon under a different hostname than the one in
> its principal is rejected.
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