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MapReduce >> mail # user >> Specific HDFS tasks where is passwordless SSH is necessary


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Specific HDFS tasks where is passwordless SSH is necessary
When setting up passwordless ssh on a cluster, its clear that the namenode
needs to be able to ssh into task trackers to start/stop nodes and restart
the cluster.

What else is passwordless SSH used for?  Do TaskTrackers/DataNodes ever SSH
into each other horizontally ? Or is SSH only used for one-way nn to tt
operations?

--
Jay Vyas
http://jayunit100.blogspot.com
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Robert Dyer 2013-02-05, 23:37
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Harsh J 2013-02-05, 23:55
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB