Re: [gentoo-user] diskless booting

[Dan Farrell]

On Mon, 01 Oct 2007 12:57:05 -0230
Roger Mason <rmason@×××××××.ca> wrote:

> Well, I had it working on Friday but over the weeekend I tinkered some
> more with pixegrub and broke it again.  Now pxelinux won't work
> either.

I've attached my dhcpd.conf, sans rndc-key.  Please note that this
configuration has a big block of code that is for dynamic DNS updates.
I kept it in because I found it hard to figure out for myself, and I
figured it would be better to put more out on the web rather than refer
you to sources I don't even know exist.  I don't know if you are
running BIND or a DNS server that can do static updates, but if you
can, I highly suggest it for your own sanity.  

For usefulness of online archives, which probably strip attachments,
here is the same info.  I even annotated it a little.

/*===================================================================
		dhcpd.conf from spore.ath.cx
===================================================================*/

key "rndc-key" { algorithm hmac-md5;
   secret "xxxxxxxxxxxxxxxxxxxxxxxx";
};

server-identifier zeus.pantheon.spore.ath.cx;
authoritative;

option domain-name-servers 192.168.10.1, 192.168.1.87;
ddns-update-style interim;

use-host-decl-names on;
allow client-updates;

# these two lines are important for net booting.. i think...
option oe-key code 159 = string;
option oe-gateway code 160 = ip-address;

on commit {
if (not static and
((config-option server.ddns-updates = null) or
(config-option server.ddns-updates != 0))) {
if exists oe-key {
set ddns-rev-name =
concat (binary-to-ascii (10, 8, ".",
reverse (1, leased-address)), ".",
pick (config-option server.ddns-rev-domainname,
"in-addr.arpa."));
set full-oe-key = option oe-key;
switch (ns-update (delete (IN, 25, ddns-rev-name, null),
add (IN, 25, ddns-rev-name, full-oe-key,
lease-time / 2)))
{
default:
unset ddns-rev-name;
break;
case NOERROR:
on release or expiry {
switch (ns-update (delete (IN, 25, ddns-rev-name, null))) {
case NOERROR:
unset ddns-rev-name;
break;
}
}
}
}
}
}

default-lease-time 609080;
max-lease-time 1218160;

# tftp server, I believe.
next-server 192.168.10.1;

#barge in and take over any lease you hear of, even if
#you don't remember granting it.  
authoritative

# more pxe settings:
option space PXE;
option PXE.mtftp-ip               code 1 = ip-address;
option PXE.mtftp-cport            code 2 = unsigned integer 16;
option PXE.mtftp-sport            code 3 = unsigned integer 16;
option PXE.mtftp-tmout            code 4 = unsigned integer 8;
option PXE.mtftp-delay            code 5 = unsigned integer 8;
option PXE.discovery-control      code 6 = unsigned integer 8;
option PXE.discovery-mcast-addr   code 7 = ip-address;

# each subdomain should have a zone entry.  

#wireless, g.spore.ath.cx
zone g.spore.ath.cx. {
   primary 192.168.1.87;
   key rndc-key;
}

#you might well need the in-addr.arpa zone too:

zone 2.168.192.in-addr.arpa. {
   primary 192.168.1.87;
   key rndc-key;
}

# this subnet doesn't support diskless booting.  Yuck, doing that 
# over WIFI would be icky.
subnet 192.168.2.0 netmask 255.255.255.0
{
   option domain-name "g.spore.ath.cx";
   # the default route for the subdomain.
   option routers 192.168.1.1;
   option domain-name-servers 192.168.1.87;
}

#pantheon 

# another one of those netbooting things
option option-150 code 150 = text ;

# another zone...
zone pantheon.spore.ath.cx. {
   primary 192.168.10.1;
   key rndc-key;
}

#		...  and reverse ...
zone 10.168.192.in-addr.arpa. {
   primary 192.168.10.1;
   key rndc-key;

#  	... and the subnet information ...
subnet 192.168.10.0 netmask 255.255.255.0 {
  range 192.168.10.101 192.168.10.199;
  option domain-name-servers 192.168.10.1;
  option domain-name "pantheon.spore.ath.cx";
  option routers 192.168.10.1;
  option broadcast-address 192.168.10.255;
  one-lease-per-client on;
  option routers 192.168.10.1;
  option domain-name-servers 192.168.10.1;
  update-static-leases on;
  ddns-domainname "pantheon.spore.ath.cx";

#the host entry is required for any host that is to be net booted.
 host apollo{
   # some way to identify
   hardware ethernet 00:04:76:e3:3b:95;
   fixed-address 192.168.10.99;
   option host-name "apollo";
   DDNS-hostname "apollo";
   # analagous to next server , I guess
   option PXE.mtftp-ip 0.0.0.0;
   # file to be served.  In this case, it's the syslinux preboot
   #execution environment binary. 
   filename "pxelinux.0";
 }
#more examples of host entries, all pretty much the same idea.  
host aphrodite{
   hardware ethernet 00:01:02:5F:6E:6B;
   fixed-address 192.168.10.96;
   option host-name "aphrodite";
   DDNS-hostname "aphrodite";
   option PXE.mtftp-ip 0.0.0.0;
   filename "pxelinux.0";
}
host artemis {
   hardware ethernet 00:01:02:46:E7:CC;
   fixed-address 192.168.10.97;
   option host-name "artemis";
   DDNS-hostname "artemis";
   option PXE.mtftp-ip 0.0.0.0;
   filename "pxelinux.0";
}
host matty{
        hardware ethernet 00:01:03:20:B8:04;
        fixed-address 192.168.10.95;
        option host-name "matty";
        DDNS-hostname "matty";
   option PXE.mtftp-ip 0.0.0.0;
   filename "pxelinux.0";
}
host cuttlefish{
   hardware ethernet 00:50:da:d7:45:a4;
   fixed-address 192.168.10.94;
   option host-name "cuttlefish";
   DDNS-hostname "cuttlefish";
   option PXE.mtftp-ip 0.0.0.0;
   filename "pxelinux.0";
}
}

#spore.ath.cx
zone spore.ath.cx. {
   primary 192.168.1.87;
   key rndc-key;
}
zone 1.168.192.in-addr.arpa. {
   primary 192.168.1.87;
   key rndc-key;
}

subnet 192.168.1.0 netmask 255.255.255.0 {
   range 192.168.1.101 192.168.1.199;
   option domain-name-servers 192.168.1.87;
   option domain-name "spore.ath.cx";
   ddns-domainname "spore.ath.cx";
   option routers 192.168.1.1;
   option subnet-mask 255.255.255.0;
   option broadcast-address 192.168.1.255;
   one-lease-per-client on;
   update-static-leases on;

host davey{
        hardware ethernet 00:01:03:20:AE:CF;
        fixed-address 192.168.1.1;
        option host-name "davey";
   option routers none;
        DDNS-hostname "davey";
        option PXE.mtftp-ip 192.168.10.1;
        filename "pxelinux.0";
}

host hydra{
   hardware ethernet 00:01:03:1E:08:FC;
   fixed-address 192.168.1.187;
   option host-name "hydra";
   DDNS-hostname "hydra";
   option PXE.mtftp-ip 0.0.0.0;
   filename "pxelinux.0";
}

host slim{
# slimline pentium4's hardware addr
#  hardware ethernet 00:E0:81:60:DF:69;
#
#        hardware ethernet 00:03:47:7d:33:d8;
        hardware ethernet 00:03:47:A3:99:C8;
   fixed-address 192.168.1.86;
   option host-name "slim";
   DDNS-hostname "slim";
        option PXE.mtftp-ip 192.168.10.1;
        filename "pxelinux.0";
}

host pascal{
        hardware ethernet 00:50:70:56:2E:CA;
        fixed-address 192.168.1.100;
        option host-name "pascal";
        DDNS-hostname "pascal";
}

host plato{
   hardware ethernet 00:11:D8:BC:6C:DF;
   fixed-address 192.168.1.79;
   option host-name "plato";
   DDNS-hostname "plato";
}

#host loki{
#        hardware ethernet 00:03:47:7d:33:d8;
#        fixed-address 192.168.1.201;
#        option host-name "loki";
#        DDNS-hostname "loki";
#        option PXE.mtftp-ip 192.168.10.1;
#        filename "pxelinux.0";
#
#}
host diathlon{
        hardware ethernet 00:50:04:0B:F9:C3;
        fixed-address 192.168.1.185;
        option host-name "diathlon";
        DDNS-hostname "diathlon";
}

} # end of spore subnet.


/*===================================================================
	END	dhcpd.conf from spore.ath.cx                 END
===================================================================*/

If you still have problems, better let us know.  

Good luck!