Re: difficulties communicating between cfengine hosts (still)

[Mark Burgess]

Marco - this is a very nice note. Have you considered uploading to to
the cfwiki so that it will survive in the afterlife?

Mark

On Wed, 2006-02-15 at 08:50 +0000, Marco van Beek wrote:
> 
> David E. Nelson wrote:
> > 
> > I haven't been following this thread very closely, but thought I'd pitch 
> > in a little nugget that bit me this afternoon on some RedHat boxes.  
> > This kept me from authenticating to the CFEngine server because reverse 
> > DNS lookups would fail.
> 
> I would just like to add that almost all our our authentication problems 
> have been caused by some form of lookup problem. This is what I now do:
> 
> 1) Check both /etc/hosts files - make sure localhost/localdomain is only 
> on the line for 127.0.0.1, and not the public/private IP address (which 
> should have the full name & short alias).
> 
> 2) Run /bin/hostname and make sure it gives you the full name. I also 
> tend to run "hostname -d" to check the domain name, hostname -f to 
> double check the FQDN, and hostname -s to check the shortname. I do this 
> to double check as I think (and I never got to the bottom) that hostname 
> on it's own was checking the hosts file, and hostname with an argument 
> checked the hostname file.
> 
> 3) Check both forward & reverse dns at BOTH ends. (I don't think reverse 
> DNS matters too much to CFEngine but is a good indicator of a bad DNS 
> setup somewhere). You should get the same results.
> 
> All the other authentication problems have either been badly configured 
> cfservd conf files, or a bad key (fogetting to press the insert key in 
> vi before pasting the key in is my favourite!).
> 
> Regards,
> 
> Marco.
> 
> 
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