Ok, so I figured I'd move this here since IRC isn't the place for it.
Ok, so I have my 40ish servers. Of those, 36 or so of them have hosts
entries that need to look like this:
127.0.0.1 localhost
172.x.x.x dbprod1.xxx.com dbprod1
172.x.x.x mgmt01.xxx.com mgmt01 puppet certmaster
172.x.x.x mybox.xxx.com mybox
Where mybox is the name of the box.
The others have a few additional entries.
So, I made a class that creates those hosts entries and I include it on my
host.
Part of the class does this:
host { "${fqdn}":
ip => $ipaddress,
alias => $hostname,
}
Seems simple enough eh?
The issue comes up with those few exception. In particular on the mgmt01
box. It blows up because it I end up redefining the host, which is a
nono.
So - lightbulb goes off in head. I'll add a case to the class that checks
if the fqdn is one of the ones I manually insert, and if so I'll skip it.
Now to me, this is a bad solution because it puts node specific logic
inside a class - I think that from a architecture/reusable component/large
scale perspetive that stuff belongs at the node definition. I guess I
could just not use my host class on my exception.
So, my next attempt was this:
node mgmt01.xxx.com {
$extrahosts = ["puppet", "certmaster"]
include hosts
}
So, I thought this would work:
if $extrahosts {
$myhosts = [$hostname, $extrahosts]
} else {
$myhost = $hostname
}
host { "${fqdn}":
ip => $ipaddress,
alias => $myhost,
}
Still have the case to handle the duplicate type, but this allow me to
specify the extra aliases and handles the rest of my cases.
But, this doesn't work.
It would seem that the above not working in SOME form really limits the
ability to write modules/classes that work in 90% of the cases and can be
overridden in the other 10%. This simplifies configuration a lot.
Am I just doing something wrong? Am I crazy? Am I thinking too much like
a programmer? Do I suck?
Just looking for thoughts?
Jason
--
Jason Slagle - RHCE
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