how to set class attributes for a host or group instead of a pool?

[Sten Carlsen]

I wonder if it will fit into a subclass? Then it will go with the MAC.


On 06/11/13 16.54, Steve Rikli wrote:
> Our DHCP is composed of groups of known hosts in multiple subnets,
> with fixed-address assignments based on hardware ethernet addresses.
> 
> I'd like to use functionality similar to this typical example:
> 
>   class "pxeclients" {
>      match if substring(option vendor-class-identifier, 0, 9) = "PXEClient";
>      next-server <tftp server>;
>      filename "pxelinux.0";
>   }
> 
> with allow/deny as needed; but it seems that global class can only be
> applied to pools with ranges, rather than a host or group of hosts.
> 
> So today to enable pxebooting we usually add next-server & filename to a
> host{} (e.g. for a re-install situation) or to a group{} (e.g. when
> bringing up a new subnet or installing a new batch of clients, etc.).
> This works well enough, but gets cumbersome.
> 
> Recently, we've added a new batch of hosts with UEFI as well as a legacy
> BIOS mode, so we're likely to need something more complex, e.g.:
> 
>   match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";
>      next-server <tftp server>;
>      if option arch = 00:06 {
>        filename "bootia32.efi";
>        }
>      else if option arch = 00:07 {
>        filename "bootx64.efi";
>        }
>      else {
>        filename "pxelinux.0";
>      }
> 
> which seems unwieldy to replicate in groups and individual hosts.
> 
> Is there a more elegant way to define a global "class"-like function,
> potentially with multiple matches and if-then conditions, yet still be
> able to selectively enable/disable it for given groups and individual
> hosts, without replicating the whole block of code everywhere?
> 
> Cheers,
> sr.
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> 

-- 
Best regards

Sten Carlsen

No improvements come from shouting:

       "MALE BOVINE MANURE!!!"