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Is there a way to avoid ssh login warning messages while login to remote server through scripts? But I do not want to change any configurations in remote server, but in scripts or any options.

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    ssh -q or ssh -q -qdoesn't work for you?
    – January
    Oct 16, 2012 at 8:15
  • What's Python's role in this? Could you be more specific?
    – MeaCulpa
    Oct 16, 2012 at 8:32
  • trying to have a automated ssh login scripts in python,but I do not want to capture the ssh warning messages displayed while login into remote machine.
    – Ganesan Nagasamy
    Oct 16, 2012 at 8:48
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    Is fixing the cause of the warning message not the better approach? What warning message is it exactly?
    – Jens
    Oct 16, 2012 at 8:56
  • No, Actually that is going to be a security warning messages displayed from remote machines.That is needed from remote machine perspective, but I do not want to capture while login through ssh through my python scripts.
    – Ganesan Nagasamy
    Oct 16, 2012 at 8:59

2 Answers 2

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If you're trying to suppress warnings coming from the ssh command, you can use the ssh options:

-o 'CheckHostIP no' -o 'StrictHostKeyChecking no' -o 'UserKnownHostsFile /dev/null'

when connecting to test systems that are regularly being reinstalled. This does yield the following warning:

Warning: Permanently added 'hostname' (RSA) to the list of known hosts.

But if you add the -q option, this warning goes away also.

Yes This is horribly dangerous WRT man-in-the-middle attacks, but it is ideal for what we're doing

If you're trying to suppress warnings from the remote system then if it obeys the .hushlogin mechanism, you can use:

touch .hushlogin

on the remote system to suppress the motd (message of the day - which is regularly where the warning messages appear).

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  • Absolutely 100% agree on bypassing the warnings being a horrible idea. This option should ONLY be used when you are on an internal network with the server in question. Never ever ever over the public internet.
    – UtahJarhead
    Oct 16, 2012 at 14:46
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Call ssh with the argument:

bash -i

for example:

/usr/bin/ssh [email protected] "bash -i"

It will supress message from the server

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