10-31-2008
Even though the accounts are not directly logging in, they still need to login and hence cannot be set to /bin/false or /bin/nologin.
The only thing I can think of is to have users execute batch files from some other system. The batch file connects to your prod servers using only SSH keys and do what ever they have to do.
That way users don't have to 'su' on your Production and accidentally lock up the accounts.
Use SSH keys. You can even restrict IP or hostname access with these keys.
P.S. I would tell users to stop 'su' if they are not sure about the password first time...
HTH,
Nitin
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