check_nrpe fails, SSL handshake error

[Michael Tucker]

More info on this:

I recompiled nrpe with --disable-ssl (on both the monitoring server and 
the host to monitor), and it works fine now. So, it's clearly a problem 
with enabling SSL and nrpe.

The error message I was seeing ("CHECK_NRPE: Error - Could not compelte 
SSL Handshake.") is being generated by check_nrpe. It's in the file 
check_nrpe.c, where it attempts to "do SSL handshake" and fails.

I am baffled as to why this is failing, or what I need to do to make it 
work. Supposedly, nrpe is using the "anonymous DH" (ADH) protocol, 
which operates sans certificates; so I would *think* that I don't need 
to do anything with openssl (e.g. create a CA, or server or client 
certificates, or anything like that). So, I'm pretty sure it's a 
problem with how nrpe is implementing SSL, rather than a problem with 
OpenSSL. But, at this point I'm stumped.

Any help with this would be greatly appreciated.

Yours,
Michael



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