Chris’ World

Toooold yaaaaa befooooooore
I never liked Ubuntu (especially their colour scheme *g*), but XEN always worked well for me on RedHat. Sadly RedHat now also decided to support KVM

Maybe we should go commercial and try VMWare ESX or something like that for server virtualization?

thanks. works. but why isn’t this a good idea?

because you don’t get security updates by simply installing a package. Plus these packages were intended for debian but ubuntu.

Backport Intrepid Xen 3.3 Hypervisor to Ubuntu Hardy Dom0 (2.6.24-21-xen)
http://lxer.com/module/newswire/view/112045/index.html

@Boris
thanks for the hint!

Getting your stuff to work downloaded and installed:-
Xen 3.3 Hypervisor from repos plus
linux-modules-2.6.26-1-xen-amd64_2.6.26-12_amd64.deb
inux-image-2.6.26-1-xen-amd64_2.6.26-12_amd64.deb
Reboot.
eth1,peth1 show up same IP-address via ifconfig.
Network access to the Net via ADSL Modem is dead.
I had to comment out all xen-bridge definitions in
/etc/xen/xend-config.sxp and manually define bridge in /etc/network/interfaces:-

# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth1
iface eth1 inet dhcp

auto br0
iface br0 inet static
address 192.168.1.45
network 192.168.0.0
netmask 255.255.255.0
broadcast 192.168.1.255
gateway 192.168.1.1
bridge_ports eth1
bridge_fd 9
bridge_hello 2
bridge_maxage 12
bridge_stp off

Reboot.Only at this point i’ve got networking done on Xen 3.3 Ubuntu Intrepid Server Dom0 (kernel 2.6.26-1-xen-amd64).

root@IntrepidSRV:~# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.001e8c25cca5 no eth1
pan0 8000.000000000000 no

root@IntrepidSRV:~# ifconfig

br0 Link encap:Ethernet HWaddr 00:1e:8c:25:cc:a5
inet addr:192.168.1.45 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21e:8cff:fe25:cca5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10387 errors:0 dropped:0 overruns:0 frame:0
TX packets:9072 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:23709253 (23.7 MB) TX bytes:937257 (937.2 KB)

eth0 Link encap:Ethernet HWaddr 00:1e:8c:25:d9:23
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:17

eth1 Link encap:Ethernet HWaddr 00:1e:8c:25:cc:a5
inet6 addr: fe80::21e:8cff:fe25:cca5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:55382 errors:0 dropped:0 overruns:0 frame:0
TX packets:39418 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:80800515 (80.8 MB) TX bytes:2916410 (2.9 MB)
Interrupt:16 Base address:0×6c00

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:22797 errors:0 dropped:0 overruns:0 frame:0
TX packets:22797 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:117429741 (117.4 MB) TX bytes:117429741 (117.4 MB)

wlan0 Link encap:Ethernet HWaddr 00:15:af:51:c2:c0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

wmaster0 Link encap:UNSPEC HWaddr 00-15-AF-51-C2-C0-00-00-00-00-00-00-00-00-00-00
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

@Boris
thanks again. haven’t noticed that there is a new minor version of the linux image. i’ll update the post now

it’s me again… your admin

@Boris
I replied to your post on your blog.

Hi, you have twice the dpkg for the modules package.

Thanks for tips!

I was equally disappointed that Ubuntu dropped support for Xen. I was also very annoyed to run into several bugs in the 2.6.24-22-xen kernel from Hardy. Thanks for the tip on installing the kernel from Debian!

Hi, thanks for posting this article. Do you know where I can find more information on this. Thanks

I try with Karmic and don’t work, someone have tried with Karmic?

Me! And does not work with Karmic neither with Intrepid. I just got to work with Ubuntu Hardy and the kernel-xen-blablabla… on the officials repositories. =/

But with CentOS , it’s ran like a charm.

@frankabel

Hi Chris,

I followed the steps, but when I rebooted to launch the Xen modified Kernel, it shows up : error: You need to load the Kernel first.
Am I doing something wrong ?

Thanks,
Vivek

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s /boot/grub/grubenv ]; then
have_grubenv=true
load_env
fi
set default=”0″
if [ ${prev_saved_entry} ]; then
saved_entry=${prev_saved_entry}
save_env saved_entry
prev_saved_entry=
save_env prev_saved_entry
fi
insmod ext2
set root=(hd0,7)
search –no-floppy –fs-uuid –set 0e870eb0-05b5-4d16-8af9-81bb2f9c3737
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640×480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don’t
# understand terminal_output
terminal gfxterm
fi
fi
if [ ${recordfail} = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/white
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry “Ubuntu, Linux 2.6.31-14-generic-pae” {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,7)
search –no-floppy –fs-uuid –set 0e870eb0-05b5-4d16-8af9-81bb2f9c3737
linux /boot/vmlinuz-2.6.31-14-generic-pae root=UUID=0e870eb0-05b5-4d16-8af9-81bb2f9c3737 ro quiet splash
initrd /boot/initrd.img-2.6.31-14-generic-pae
}
menuentry “Ubuntu, Linux 2.6.31-14-generic-pae (recovery mode)” {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
insmod ext2
set root=(hd0,7)
search –no-floppy –fs-uuid –set 0e870eb0-05b5-4d16-8af9-81bb2f9c3737
linux /boot/vmlinuz-2.6.31-14-generic-pae root=UUID=0e870eb0-05b5-4d16-8af9-81bb2f9c3737 ro single
initrd /boot/initrd.img-2.6.31-14-generic-pae
}
menuentry “Ubuntu, Linux 2.6.26-1-xen-686″ {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,7)
search –no-floppy –fs-uuid –set 0e870eb0-05b5-4d16-8af9-81bb2f9c3737
linux /boot/vmlinuz-2.6.26-1-xen-686 root=UUID=0e870eb0-05b5-4d16-8af9-81bb2f9c3737 ro quiet splash
initrd /boot/initrd.img-2.6.26-1-xen-686
}
menuentry “Ubuntu, Linux 2.6.26-1-xen-686 (recovery mode)” {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
insmod ext2
set root=(hd0,7)
search –no-floppy –fs-uuid –set 0e870eb0-05b5-4d16-8af9-81bb2f9c3737
linux /boot/vmlinuz-2.6.26-1-xen-686 root=UUID=0e870eb0-05b5-4d16-8af9-81bb2f9c3737 ro single
initrd /boot/initrd.img-2.6.26-1-xen-686
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry “Memory test (memtest86+)” {
linux16 /boot/memtest86+.bin
}
menuentry “Memory test (memtest86+, serial console 115200)” {
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry “Windows NT/2000/XP (on /dev/sda3)” {
insmod fat
set root=(hd0,3)
search –no-floppy –fs-uuid –set e47a-f974
drivemap -s (hd0) ${root}
chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the ‘exec tail’ line above.
### END /etc/grub.d/40_custom ###

Just to update, I had installed Ubuntu Enterprise Cloud (which comes with Ubuntu 9.10 Karmic). I needed the Xen hypervisor instead of KVM, and hence I followed your steps to have the Dom0 Kernel.