check_ssh to find "corrupt" keys that need regeneration?

[Roger]

On 2/20/08, Roger <Roger at nagioswiki.com> wrote:
>
> I have ~300 Foundry routers, and periodically something (not sure what)
> "happens" that resets some sort of key that prevents me from SSH'ing in with
> a tool like PuTTY and Teraterm (have not tried this from a Linux ssh box).
>
> check_ssh, I know, checks the ssh handshake but (to my knowledge) does not
> help us make sure that we can add the user/passwd from PuTTY (or equiv).
>
> Is there a switch in check_ssh that I'm missing? Or perhaps a plugin?  Or
> is this something that I will have to kludge myself?
>

For what it's worth, one associate of mine has suggested using a script
based on Net::Telnet (which, according to the man page, can be told to use
SSH for the underlying transport -- see man page), Net::SSH, or maybe even
just a plain expect script to prove that one can log in.

Anybody have an example of one of these that I can look at?
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