[cs615asa] cs615 hw6

Jan Schaumann jschauma at cs.stevens.edu
Mon Apr 25 12:50:01 EDT 2011


Pengfei Liu <pliu3 at stevens.edu> wrote:
 
>  When we do "ec2-run-instances", we need to specify the keypair with flag
> "-k".

*You* may require this, but another user may not, depending on how they
set things up.

> Do we require the user to set "-k" in environment
> "EC2_RUN_INSTANCES_FLAGS" or we get it from ssh config file? Thank you!

You do not require anything from the user in this regard.  If the user
needs to use the '-k' flag, than she can set it via the
EC2_RUN_INSTANCES_FLAGS environment variable.

You should not parse the user's ssh config file (and in fact that would
not be a reliable way for you to determine anything anyway, as you would
just make the assumption that whatever settings the user requires are
fixed in there).

-Jan


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