[CentOS] C7, encryption, and clevis

Fri Jun 8 15:27:50 UTC 2018
m.roth at 5-cent.us <m.roth at 5-cent.us>

John Hodrien wrote:
> On Fri, 8 Jun 2018, m.roth at 5-cent.us wrote:
>> We've been required to encrypt h/ds, and so have been rolling that out
>> over the last year or so. Thing is, you need to put in a password, of
>> course, to boot the system. My manager found a way to allow us to reboot
>> without being at the system's keyboard, a package called clevis. Works
>> fine... except in a couple of very special cases.
>> Those systems, the problem is that, due to older software, and *very*
>> expensive licenses that are tied to a MAC address, I have to spoof the
>> MAC address since my users got new(er) machines.
>> Clevis is trying to contact its password server, using the *real* MAC
>> address, but our DHCP has to serve the *spoofed* MAC address. I know,
>> from trying, that I can't have two entries for the same system. Can anyone
>> suggest a solution?
> Nothing wrong with having two MAC addresses listed for one IP.  With ISC
> DHCP the label for a host has to be unique, but the hostname doesn't.

The IP's not the problem, it's dhcpd gagging on two entries, two MAC
addresses, for the same server name - think dhcpd.conf.local