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Posted to hdfs-issues@hadoop.apache.org by "Owen O'Malley (Updated) (JIRA)" <ji...@apache.org> on 2012/01/29 19:15:10 UTC
[jira] [Updated] (HDFS-2856) Fix block protocol so that Datanodes
don't require root or jsvc
[ https://issues.apache.org/jira/browse/HDFS-2856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HDFS-2856:
--------------------------------
Description:
Since we send the block tokens unencrypted to the datanode, we currently start the datanode as root using jsvc and get a secure (< 1024) port.
If we have the datanode generate a nonce and send it on the connection and the sends an hmac of the nonce back instead of the block token it won't reveal any secrets. Thus, we wouldn't require a secure port and would not require root or jsvc.
was:
Since we send the block tokens unencrypted to the datanode, we currently start the datanode as root and get a secure (< 1024) port.
If we have the datanode generate a nonce and send it on the connection and the sends an hmac of the nonce back instead of the block token it won't reveal any secrets. Thus, we wouldn't require a secure port and would not require root or jsvc.
Summary: Fix block protocol so that Datanodes don't require root or jsvc (was: Fix block protocol so that Datanodes don't require root or jvsc)
> Fix block protocol so that Datanodes don't require root or jsvc
> ---------------------------------------------------------------
>
> Key: HDFS-2856
> URL: https://issues.apache.org/jira/browse/HDFS-2856
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node, security
> Reporter: Owen O'Malley
>
> Since we send the block tokens unencrypted to the datanode, we currently start the datanode as root using jsvc and get a secure (< 1024) port.
> If we have the datanode generate a nonce and send it on the connection and the sends an hmac of the nonce back instead of the block token it won't reveal any secrets. Thus, we wouldn't require a secure port and would not require root or jsvc.
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