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Wei-Chiu Chuang commented on HDFS-11069: ---------------------------------------- Hi [~kihwal], I'm just curious, for security concerns, should NameNode also tighten its RPC authorization as well? Any reason why not? One reason might be the NameNode HA, but I wonder if there are other rationales too. Thanks. > Tighten the authorization of datanode RPC > ----------------------------------------- > > Key: HDFS-11069 > URL: https://issues.apache.org/jira/browse/HDFS-11069 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode, security > Reporter: Kihwal Lee > Assignee: Kihwal Lee > Fix For: 2.7.4, 3.0.0-alpha2 > > Attachments: HDFS-11069.patch > > > The current implementation of {{checkSuperuserPrivilege()}} allows the > datanode user from any node to be recognized as a super user. If one > datanode is compromised, the intruder can issue {{shutdownDatanode()}}, > {{evictWriters()}}, {{triggerBlockReport()}}, etc. against all other > datanodes. Although this does not expose stored data, it can cause service > disruptions. > This needs to be tightened to allow only the local datanode user. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org