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How to verify SSH is installed in Hadoop Cluster

The following command helps, whether SSH is installed or not on your Hadoop cluster.

[hadoop-user@master]$ which ssh
[hadoop-user@master] $ which sshd
[hadoop-user@master] $ which ssh -keygen

If you do not get proper response as above. That means that SSH is not installed on your cluster.


If you receive an error message

/user/bin/which: no ssh in (/user/bin: /user/sbin....)

You need to install open SSH ( vial Linux package manager. Or by downloading the source directly.

Note: This is usually done by System Admin.


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