Hi all.
I use Cobbler to manage my PXE boot. I would like to extend my use to manage
VM deployment with Koan. But I have a problem related to network and my VM
can't boot. I have already posted on Cobbler mailing-list but it's probably
on kvm/libvirt side...
I am on Fedora 10 with Cobbler 1.6.4 and Koan 1.6.3 (latest available from
stable repos), and libvirt 0.5.1-2.fc10. I would like to create VMs using
KVM thus I have imported FC10 DVD, added Everything and Updates repos and
created a host using the profile created during import. The system has the
following properties :
root# cobbler system report vmtest
system : vmtest
profile : fedora-core-10-x86_64
comment :
created : Fri May 8 13:43:40 2009
gateway : 192.168.1.254
hostname : vmtest
image :
kernel options : {}
kernel options post : {}
kickstart : <<inherit>>
ks metadata : {}
mgmt classes : []
modified : Sat May 23 18:42:59 2009
name servers : []
name servers search : []
netboot enabled? : True
owners : ['admin']
redhat mgmt key : <<inherit>>
redhat mgmt server : <<inherit>>
server : <<inherit>>
template files : {}
virt cpus : <<inherit>>
virt file size : <<inherit>>
virt path : <<inherit>>
virt ram : <<inherit>>
virt type : <<inherit>>
power type : ipmitool
power address :
power user :
power password :
power id :
interface : eth0
mac address : ff:00:00:01:00:00
bonding :
bonding_master :
bonding_opts :
is static? : True
ip address : 192.168.1.201
subnet : 255.255.255.0
static routes : []
dns name : vmtest.local
dhcp tag :
virt bridge : br0
As you can see, I use a bridged network with a real bridge create with the
method described on the wiki (eth0 is the real interface and br0 the
bridge).
Then I create the VM using : koan --server=cobbler.evenit.info --virt
--system=vmtest
The VM is correctly created and started : kernel and initrd are correctly
set, virtual hard drive is right and network interface seems right.
root# ps -edf | grep kvm
root 19484 23655 67 21:54 ? 00:00:06 /usr/bin/qemu-kvm -S -M pc
-m 256 -smp 1 -name vmtest -monitor pty -no-reboot -boot c -kernel
/var/lib/libvirt/boot/virtinst-vmlinuz.omv9yr -initrd
/var/lib/libvirt/boot/virtinst-initrd.img.Ufj-qc -append ks=
http://cobbler.evenit.info/cblr/svc/op/ks/system/vmtest ksdevice=link
kssendmac lang= text method=
http://cobbler.evenit.info:80/cblr/links/fedora-core-10-x86_64/<http://cobbler.evenit.info/cblr/links/fedora-core-10-x86_64/>-drive
file=/var/lib/libvirt/images/vmtest-disk0,if=virtio,index=0,boot=on
-net nic,macaddr=ff:00:00:01:00:00,vlan=0,model=virtio -net
tap,fd=14,script=,vlan=0,ifname=vnet0 -serial pty -parallel none -usb -vnc
127.0.0.1:0 -k en-us
But, when I open the VM display with virt-manager, I see that installation
can't start as DHCP is not answering... There's no trace of the DHCP
requests on DHCP server and vnet0 seems to have no trafic :
[r...@lilith ~]# netstat -i
Table d'interfaces noyau
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP
TX-OVR Flg
br0 1500 0 173524 0 0 0 261005 0
0 0 BMRU
eth0 1500 0 173589 0 0 0 260909 0
0 0 BMPRU
lo 16436 0 29105 0 0 0 29105 0
0 0 LRU
vnet0 1500 0 0 0 0 0 1 0
0 0 BMRU
As far as I can see, it seems vnet0 doesn't forward its trafic to br0 like
there's no link.
I have also seen that the vnet0 interface seen from host (opposed to guest)
doesn't have the MAC address asked for vnet0, but this may be normal.
--
Fabien
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