Mobin Ranjbar created HADOOP-13295:
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Summary: Possible Vulnerability in DataNodes via SSH
Key: HADOOP-13295
URL: https://issues.apache.org/jira/browse/HADOOP-13295
Project: Hadoop Common
Issue Type: Bug
Reporter: Mobin Ranjbar
I suspected something weird in my Hadoop cluster. When I run datanodes, after a
while my servers(except namenode) will be down for SSH Max Attempts. When I
checked the 'systemctl status ssh', I figured out there are some invalid
username/password attempts via SSH and the SSH daemon blocked all incoming
connections and I got connection refused.
I have no problem when my datanodes are not running.
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