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Dom0 setup
all packages have been installed with the apt default settings of installing recommended packages but not installing suggested packages
updated /etc/apt/sources.list with this content:
deb http://ftp.us.debian.org/debian/ squeeze main non-free contrib
deb-src http://ftp.us.debian.org/debian/ squeeze main non-free contrib
deb http://security.debian.org/ squeeze/updates main contrib non-free
deb-src http://security.debian.org/ squeeze/updates main contrib non-free
deb http://ftp.us.debian.org/debian/ squeeze-updates main contrib non-free
deb-src http://ftp.us.debian.org/debian/ squeeze-updates main contrib non-free
deb http://backports.debian.org/debian-backports squeeze-backports main
deb-src http://backports.debian.org/debian-backports squeeze-backports main
the backports are there only for selected packages. there’s no preference set to prefer backports for certain things.
Right now that list of packages is:
- linux-image-3.2.0-0.bpo.3-amd64
- firmware-linux-free
- firmware-linux-nonfree
as installed through: $ apt-get install -t squeeze-backports linux-image-3.2.0-0.bpo.3-amd64 \ firmware-linux-free firmware-linux-nonfree
In the future, we might also want to install additional backported packages, such as munin-node, given how superior munin 2.0 is to older versions.
cause SSHing to the wrong host is easy
so rafl won’t be a sad sysadmin
for firewalling, dnat, masquerading
for backups
so rafl can has his german LC_CTYPE without perl and some other bits whining about it not being available.
as updated via dpkg-reconfigure locales and selecting de_DE.UTF-8 in addition to the other selected locales. No default locale was chosen.
the firewall configuration for this is all self-contained in /etc/shorewall
to enable the firewall on boot, /etc/default/shorewall has been modified to
contain startup=1
This setup assumes only one public IP address and VMs behind a NAT.
In /etc/network/interfaces, add
auto vir-sc2
iface vir-sc2 inet static
address 10.10.23.1
netmask 255.255.255.0
bridge_stp off
bridge_fd 0
pre-up brctl addbr vir-sc2
post-down brctl delbr vir-sc2
net.ipv4.ip_forward=1 in /etc/sysctl.conf
Have a pool definition in some xml file:
<pool type="logical">
<name>cpan2</name>
<target>
<path>/dev/cpan2</path>
</target>
</pool>The name and target path will need to correspond to an existing LVM volume
group. If there is no volume group yet, you’ll need to either assemble it
yourself or provide <source /> information on how to assemble it.
$ virsh pool-define $PATH_TO_POOL_XML_FILE # create pool in libvirt $ virsh pool-start cpan2 # start the pool. might hang while udev settles.
$ virsh pool-autostart cpan2 # start the pool on boot
After this, the configuration for this is contained in etc/libvirt/storage. However, one can’t just create that directory using puppet or whatever, as the VGs UUID will be different for different hosts.
The libvirt network abstraction in the version of libvirt in debian squeeze isn’t terribly smart. Until we’re upgrading to a new libvirt, we’re gonna maintain the network bits of this manually, and not through libvirt.
The configuration of this is covered earlier in this document. No libvirt configuration is required.
kernel/mm/ksm/run = 1 in /etc/sysfs.conf
NOTE: be sure to change the host name and the network adapter’s mac address to something unique.
$ virt-install -n sc2-n1 -r 32768 –vcpus 4 \ -l http://ftp.us.debian.org/debian/dists/squeeze/main/installer-amd64/ \ –network bridge=vir-sc2,model=virtio,mac=00:50:56:00:3E:50 –nographics \ –serial pty -x ‘console=ttyS0 priority=low’ \ –disk pool=cpan2,bus=virtio,sparse=false,size=300 \ –os-type=linux –os-variant=debiansqueeze
then, add the static ip address you configured in the installer to the host
machine’s /etc/hosts:
10.10.23.2 sc2-n1.metacpan.org sc2-n1 n1