On 11/05/17 23:22, Carl Karsten wrote: > I am pondering something I am not sure I even want: I guess we can call > it a default option 209 > > Is this valid, reliable, predictable? > > dhcp-option-force=209,"partman-auto/disk=/dev/sda" > > dhcp-host=00:26:9e:03:9d:e5,set:negk,negk > dhcp-option-force=tag:negk,209,"partman-auto/disk=/dev/sdb" > > > The hope is ...sda except for the tag:negk case.
Yeah, that's how it's defined to work: and option which is conditional on a tag gets used in preference to one which is not conditional, of the tag is set. Cheers, Simon. > > personally I only touch 20 machines a year, so setting up the extra 19 > lines > is easy. I like to understand my tools, and maybe someone with 100''s > will be interested in my setup. probaly not ;) > > > > > On Sun, Apr 30, 2017 at 11:58 PM, Carl Karsten <c...@nextdayvideo.com > <mailto:c...@nextdayvideo.com>> wrote: > > woked - yay. > > dhcp-host=00:26:9e:03:9d:e5,set:negk,negk > dhcp-option-force=tag:negk,209,"partman-auto/disk=/dev/sda" > > # grub/grub.cfg > net_get_dhcp_option appends ${net_default_interface} 209 string > > menuentry "Install Ubuntu preseed" { > set gfxpayload=keep > linux /ubuntu-installer/amd64/linux gfxpayload=800x600x16,800x600 > --- auto=true url=dc10b DEBCONF_DEBUG=5 tasks="" hostname= > interface=${net_default_mac} ${appends} > initrd /ubuntu-installer/amd64/initrd.gz > } > > ~ # head /var/log/syslog > May 1 04:30:40 kernel: [ 0.000000] Command line: > BOOT_IMAGE=/ubuntu-installer/amd64/linux > gfxpayload=800x600x16,800x600 --- auto=true url=dc10b > DEBCONF_DEBUG=5 tasks= hostname= interface=00:26:9e:03:9d:e5 > partman-auto/disk=/dev/sda > > > > On Fri, Apr 28, 2017 at 5:53 PM, Simon Kelley > <si...@thekelleys.org.uk <mailto:si...@thekelleys.org.uk>> wrote: > > On 27/04/17 17:42, Carl Karsten wrote: > > I am looking for the syntax of dhcp vendor options, and then how to > > access them in grub-net. I think. maybe there is a better way. > > > > I pxe boot grub, which boots di (Debian Installer) and pass a > preseed file. > > > > I am trying to work out a nice way to pass host specific info to di > > example, most use: > > partman-auto/disk="/dev/sda" > > but one machine has an onboard ssd nvme which needs /dev/nvme0n1 > > > > di will read values appended to the kernel boot line, so I can hard > code > > it like this: > > > > menuentry "Install Ubuntu preseed" { > > set gfxpayload=keep > > linux /ubuntu-installer/amd64/linux gfxpayload=800x600x16,800x600 > --- > > auto=true url=dc10b hostname= partman-auto/disk="/dev/nvme0n1" > > interface=${net_default_mac} > > initrd /ubuntu-installer/amd64/initrd.gz > > } > > > > interface=${net_default_mac} - use the nic that pxe booted. > > > > Now I get lost in conf options and syntax. forgive me for making > stuff > > up here, if it worked I wouldn't be asking for help. > > > > I am hoping for something like > > partman-auto/disk=$(net_pxe_extensionspath/disk} > > > > in dnsmasq conf: > > dhcp-host=40:8d:5c:7f:bb:90,,gator > > > > dhcp-option-force=host:gator,209,"disk=/dev/nvme0n1" > > > > Look for "tags" in the man page, in this case, set a tag in the > dhcp-host line (it can be the same as the hostname) > > dhcp-host=40:8d:5c:7f:bb:90,set:gator,gator > > > and make the option conditional on that tag > > dhcp-option-force=tag:gator,209,"disk=/dev/nvme0n1" > > > > > So yeah, how do I send random strings based on mac/hostname > See above > > > > and how do I read what was sent in grub? > > Set the "log-dhcp" flag in the dnsmasq configuration to get lots of > useful information. > > Cheers, > > Simon. > > > > > > > > -- > > Carl K > > > > > > > > _______________________________________________ > > Dnsmasq-discuss mailing list > > Dnsmasq-discuss@lists.thekelleys.org.uk > <mailto:Dnsmasq-discuss@lists.thekelleys.org.uk> > > http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss > <http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss> > > > > > > _______________________________________________ > Dnsmasq-discuss mailing list > Dnsmasq-discuss@lists.thekelleys.org.uk > <mailto:Dnsmasq-discuss@lists.thekelleys.org.uk> > http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss > <http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss> > > > _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
