Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/4162#issuecomment-72113135
Hey on this one - doesn't ssh itself give a good error message if the key
file does not have the correct permissions? Should we just be propagating the
SSH message rather than trying to duplicate logic here?
"""
> ssh -i id_rsa_unprotected [email protected]
Note: logging in to this server with a password has been disabled.
Please see :
https://blogs.apache.org/infra/entry/committer_shell_access_to_people
Remember to load your ssh key:-
See: http://linux.die.net/man/1/ssh-add
See: http://linux.die.net/man/1/ssh-agent
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: UNPROTECTED PRIVATE KEY FILE! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0777 for 'id_rsa_unprotected' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
bad permissions: ignore key: id_rsa_unprotected
Permission denied (publickey).
"""
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