Re: [Dnsmasq-discuss] dhcp vendor-option and grub net_pxe_extensionspath

2017-05-12 Thread Simon Kelley 
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  > 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} ${appends}
> initrd /ubuntu-installer/amd64/initrd.gz
> }
> 
> ~ # head /var/log/syslog
> May  1 04:30:40 kernel: [0.00] Command line:
> BOOT_IMAGE=/ubuntu-installer/amd64/linux
> gfxpayload=800x600x16,800x600 --- auto=true url=dc10b
> DEBCONF_DEBUG=5 tasks= hostname= interface=00:26:9e:03:9d:e5
> partman-auto/disk=/dev/sda
> 
> 
> 
> On Fri, Apr 28, 2017 at 5:53 PM, Simon Kelley
> > wrote:
> 
> On 27/04/17 17:42, Carl Karsten wrote:
> > I am looking for the syntax of dhcp vendor options, and then how to
> > access them in grub-net.  I think.  maybe there is a better way.
> >
> > I pxe boot grub, which boots di (Debian Installer) and pass a 
> preseed file.
> >
> > I am trying to work out a nice way to pass host specific info to di
> > example, most use:
> > partman-auto/disk="/dev/sda"
> > but one machine has an onboard ssd nvme which needs /dev/nvme0n1
> >
> > di will read values appended to the kernel boot line, so I can hard 
> code
> > it like this:
> >
> > menuentry "Install Ubuntu preseed" {
> > set gfxpayload=keep
> > linux /ubuntu-installer/amd64/linux gfxpayload=800x600x16,800x600 
> ---
> > auto=true url=dc10b hostname= partman-auto/disk="/dev/nvme0n1"
> > interface=${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
> 
> > 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
> 
> 
> 
>

Re: [Dnsmasq-discuss] dhcp vendor-option and grub net_pxe_extensionspath

2017-05-11 Thread Carl Karsten 
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.

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 
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} ${appends}
> initrd /ubuntu-installer/amd64/initrd.gz
> }
>
> ~ # head /var/log/syslog
> May  1 04:30:40 kernel: [0.00] Command line:
> BOOT_IMAGE=/ubuntu-installer/amd64/linux gfxpayload=800x600x16,800x600
> --- auto=true url=dc10b DEBCONF_DEBUG=5 tasks= hostname=
> interface=00:26:9e:03:9d:e5 partman-auto/disk=/dev/sda
>
>
>
> On Fri, Apr 28, 2017 at 5:53 PM, Simon Kelley 
> wrote:
>
>> On 27/04/17 17:42, Carl Karsten wrote:
>> > I am looking for the syntax of dhcp vendor options, and then how to
>> > access them in grub-net.  I think.  maybe there is a better way.
>> >
>> > I pxe boot grub, which boots di (Debian Installer) and pass a preseed
>> file.
>> >
>> > I am trying to work out a nice way to pass host specific info to di
>> > example, most use:
>> > partman-auto/disk="/dev/sda"
>> > but one machine has an onboard ssd nvme which needs /dev/nvme0n1
>> >
>> > di will read values appended to the kernel boot line, so I can hard code
>> > it like this:
>> >
>> > menuentry "Install Ubuntu preseed" {
>> > set gfxpayload=keep
>> > linux /ubuntu-installer/amd64/linux gfxpayload=800x600x16,800x600 ---
>> > auto=true url=dc10b hostname= partman-auto/disk="/dev/nvme0n1"
>> > interface=${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
>> > 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
>>
>>
>
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Re: [Dnsmasq-discuss] dhcp vendor-option and grub net_pxe_extensionspath

2017-04-30 Thread Carl Karsten 
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: [0.00] 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 
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
> > 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
>
>
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Re: [Dnsmasq-discuss] dhcp vendor-option and grub net_pxe_extensionspath

2017-04-28 Thread Simon Kelley 
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
> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
> 




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[Dnsmasq-discuss] dhcp vendor-option and grub net_pxe_extensionspath

2017-04-27 Thread Carl Karsten 
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"


So yeah, how do I send random strings based on mac/hostname
and how do I read what was sent in grub?

-- 
Carl K
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