[syslinux] memdisk and iso, speed up

[upen]

On Sat, Jun 8, 2013 at 1:44 AM, Geert Stappers <stappers at stappers.nl> wrote:

> Op 2013-06-07 om 12:20 schreef upen:
> > On Fri, Jun 7, 2013 at 9:29 AM, Geert Stappers <stappers at stappers.nl>
> wrote:
> > > Op 2013-06-07 om 06:18 schreef upen:
> > > > [ ... dhcp server configuration ... ]
> > > > Everything has been always like this on tftp/dhcp server.
> > >
> > > That dhcpd config "works", what is missing is "shift to HTTP".
> > >
> > > The (speed) advantage of HTTP over TFTP is that HTTP "streams",
> > > where TFTP does "go, stop, go, stop, go, stop".
> > >
> > > What is needed is 'dhcp option 209'
> > >
> > > See
> > >
> http://www.syslinux.org/wiki/index.php/PXELINUX#Can_I_send_information_to_PXELINUX_via_special_options_in_the_DHCP_response.3F
> > > for a clue. Yes, this terse answer is the best I can offer now.
> > >
> > >
> > How does this look?
>
> What I see is that we are also there.
> There is some magic missing. ( pun intented :-) )
>
> >
> > #ddns-update-style ad-hoc;
> > ddns-update-style none;
> > log-facility local7;
> > deny unknown-clients;
> > non-authoritative;
> > #option domain-name "example.com";
> > #option domain-name-servers ns1.example.com;
>

Ok. I will make the arrangement on the server to serve the linux-install
via web and add the above magic line into my dhcpd.conf as suitable to my
environment. Thanks!



> > option subnet-mask 255.255.255.0;
> > default-lease-time 600;
> > max-lease-time 7200;
> > #allow bootp;
> > #allow booting;
> > option ip-forwarding    false;  # No IP forwarding
> > option mask-supplier    false;  # Don't respond to ICMP Mask req
> > server-name "dhcp209l";
> > next-server 192.168.0.100;
> > option space pxelinux;
> > option pxelinux.magic      code 208 = string;
> > option pxelinux.configfile code 209 = text;
> > option pxelinux.pathprefix code 210 = text;
> > option pxelinux.reboottime code 211 = unsigned integer 32;
> >
> > subnet 192.168.0.0 netmask 255.255.255.0 {
> >   range 192.168.0.1 192.168.0.88;
> >   option routers 192.168.0.100;
> > }
> >
> > host rhelclient {
> >   next-server 192.168.0.100;
> >   filename "linux-install/lpxelinux.0";
>     option pxelinux.magic f1:00:74:7e;
> >   option pxelinux.configfile "linux-install/pxelinux.cfg/default";
>     option pxelinux.pathprefix "http://a.web.server/path/to/linux-install/
> ";
> >   hardware ethernet 08:00:27:E7:34:E9;
> >   fixed-address 192.168.0.88;
>     option host-name "dhcp209l" ;
> >
> > I was able to stop and start dhcpd fine,
> > with above configuration in dhcpd.conf.
>
> Okay, that means "the _syntax_ in configuration file is valid."
>
> Edit the dhcpd config again, proces my changes from above.
> Start-Stop[1] dhcpd to get the changes active[2].
>

Will do.


>
> > I changed server-name to dhcp209l and updated /etc/hosts with new host
> > entry of this name with ip of eth1.
>
> Ack[3].
>
>
> Now netboot the client again.
> It should shift from TFTP to HTTP.
>
> Please report your milage.
>

Okay.

>
>
> > upen,
> > emerge -uD life (Upgrade Life with dependencies)
>
>
> Groeten
> Geert Stappers
> Enjoying life with "apt" and other Debian goodies
>

I am still upgrading..Lol..


> [1] IIRC has ISC-dhcpd no reload option
> [2] it is also a syntax validation check
> [3] Seen the remark on update of /etc/hosts and something with eth1
> --
> Leven en laten leven
>

Thank you all.
Upen