And we come to my initial attempts.
In fact I initially tried to do that, and configured tftpd in xinetd
but I got the same result, so I asked myself if I had to use tftpboot
embedded in Qemu or not.
So, resuming.
- Configured a default bridged nertwork named virbr0 on the host (that
gives ip addresses from 192.168.122.2 - 192.168.122.100), so that
[root@virtfed ~]# ifconfig virbr0
virbr0 Link encap:Ethernet HWaddr 5E:31:5B:33:F9:5A
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
- Configured tftpserver on the host.
- From a guest that has its virtual network device on virbr0 I can do
[root@mindy ~]# tftp 192.168.122.1
tftp> get pxelinux.0
tftp> quit
[root@mindy ~]# ll pxelinux.0
-rw-r--r-- 1 root root 15702 Jun 18 12:05 pxelinux.0
So tftp works on the host. In its messages I get:
Jun 18 11:59:10 virtfed xinetd[2962]: START: tftp pid=3033 from=192.168.122.102
- Trying to create a guest from virt-manager with these steps:
first window I specify guest name and select the option "Network Boot (PXE)
(I can select also Local install media, while the option "Network
install" is greyed out.... is this correct?)
second window I select OS Type=Linux and Version=generic2.6 kernel
third window memory and cpu
fourth window I specify a pre-existing storage (LV on a dedicated VG)
fifth window I do not change anything (I see that are selected virtual
network default virt_type=kvm and os type x86_64, that are ok for me)
I select finish and I get the console window for the guest
The network boot begins and I get this loop
Searching for a Server (DHCP)....
Me: 192.168.122.35, DHCP: 192.168.122.1, TFTP: 192.168.122.1, Gateway
192.168.122.1
No filename
<sleep>
<abort>
probing pci nic...
Probing isa nic...
<sleep>
Boot from (N)etwork or (Q)uit?
probing pci nic...
[rtl8139] - ioaddr 0XC100, irq 11, addr 54:52:00:45:F8:17 100Mbps half-duplex
And no tftp request in /var/log/messages on the host....
So I now notice that dhcpd service is provided by dnsmasq on the
host... that probably is started by libvirtd?
because
[root@virtfed ~]# chkconfig --list dnsmasq
dnsmasq 0:off 1:off 2:off 3:off 4:off 5:off 6:off
And probably the missing part is telling dnsmasq to enable its
embedded tftp-server (or anyway tell it to use an external one...)
So the question is: can I configure this instance of dnsmasq to enable
its tftp server?
I can do it in /etc/dnsmasq.conf, but it seems that dnsmasq is started
without a config file:
nobody 2428 1 0 13:14 ? 00:00:00 /usr/sbin/dnsmasq
--strict-order --bind-interfaces
--pid-file=/var/run/libvirt/network/default.pid --conf-file=
--listen-address 192.168.122.1 --except-interface lo --dhcp-range
192.168.122.2,192.168.122.100
How to glue the several components...?
Thanks,
Gianluca
On Wed, Jun 17, 2009 at 2:37 PM, Cole Robinson<crobinso@xxxxxxxxxx> wrote:
>You should be able to use a regular PXE server on your network.
>
> Thanks,
> Cole
>
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