Comments on: Tips on Using Ganeti to Manage a KVM based Virtual Machine Cluster on Ubunty Jaunty Jackelope 9.04 http://geekfun.com/2009/07/14/tips-on-using-ganeti-to-manage-a-kvm-based-virtual-machine-cluster-on-ubunty-jaunty-jackelope-9-04/ Conservative: Someone who tries to change the future by lying about the past Sat, 19 May 2012 10:50:21 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Ganeti by gregers - Pearltrees http://geekfun.com/2009/07/14/tips-on-using-ganeti-to-manage-a-kvm-based-virtual-machine-cluster-on-ubunty-jaunty-jackelope-9-04/comment-page-1/#comment-76690 Ganeti by gregers - Pearltrees Thu, 22 Dec 2011 12:54:02 +0000 http://geekfun.com/?p=1186#comment-76690 [...] I’ve hacked up the ganeti-os-debootstrap scripts to use ubuntu’s vmbuilder script to create ubuntu VMs that do have a boot loader. I need to do a little cleanup and then I’ll share my work. Tips on Using Ganeti to Manage a KVM based Virtual Machine Cluster on Ubunty Jaunty Jackelope 9.04 |... [...] [...] I’ve hacked up the ganeti-os-debootstrap scripts to use ubuntu’s vmbuilder script to create ubuntu VMs that do have a boot loader. I need to do a little cleanup and then I’ll share my work. Tips on Using Ganeti to Manage a KVM based Virtual Machine Cluster on Ubunty Jaunty Jackelope 9.04 |… [...]

]]> By: Bookmarks for June 20th through December 13th — Somewhere out there! http://geekfun.com/2009/07/14/tips-on-using-ganeti-to-manage-a-kvm-based-virtual-machine-cluster-on-ubunty-jaunty-jackelope-9-04/comment-page-1/#comment-76075 Bookmarks for June 20th through December 13th — Somewhere out there! Tue, 13 Dec 2011 01:22:44 +0000 http://geekfun.com/?p=1186#comment-76075 [...] Tips on Using Ganeti to Manage a KVM based Virtual Machine Cluster on Ubunty Jaunty Jackelope 9.04 |... – [...] [...] Tips on Using Ganeti to Manage a KVM based Virtual Machine Cluster on Ubunty Jaunty Jackelope 9.04 |… – [...]

]]> By: herky http://geekfun.com/2009/07/14/tips-on-using-ganeti-to-manage-a-kvm-based-virtual-machine-cluster-on-ubunty-jaunty-jackelope-9-04/comment-page-1/#comment-57411 herky Sun, 06 Feb 2011 10:22:54 +0000 http://geekfun.com/?p=1186#comment-57411 Hi, kvm and the console wont work together nicely. try binding the instance to vnc (0.0.0.0) and use a vnc viewer to connect to your instance - to check for the port of your instance do gnt-instance info instanceofyours. greets Hi,

kvm and the console wont work together nicely. try binding the instance to vnc (0.0.0.0) and use a vnc viewer to connect to your instance – to check for the port of your instance do gnt-instance info instanceofyours.

greets

]]> By: Heriyono Sim http://geekfun.com/2009/07/14/tips-on-using-ganeti-to-manage-a-kvm-based-virtual-machine-cluster-on-ubunty-jaunty-jackelope-9-04/comment-page-1/#comment-45918 Heriyono Sim Mon, 02 Aug 2010 13:39:01 +0000 http://geekfun.com/?p=1186#comment-45918 These tips below will help you tremendously. Please drop a message if so. Follow: http://ganeti-doc.googlecode.com/svn/ganeti-2.1/html/install-quick.html Follow: http://ganeti-doc.googlecode.com/svn/ganeti-2.1/html/install.html Follow: http://geekfun.com/2009/07/14/tips-on-using-ganeti-to-manage-a-kvm-based-virtual-machine-cluster-on-ubunty-jaunty-jackelope-9-04/ For debootstrap: Use: ./configure --prefix=/usr --localstatedir=/var \ --sysconfdir=/etc \ --with-os-dir=/srv/ganeti/os make && make install ln -s vmlinuz-2.6.24-11-pve /boot/kernel-2.6-kvmU ln -s initrd.img-2.6.24-11-pve /boot/initrd-2.6-kvmU gnt-cluster modify -H kvm:initrd_path=/boot/kernel-2.6-kvmU gnt-cluster modify -H kvm:initrd_path=/boot/initrd-2.6-kvmU gnt-cluster modify -H kvm:vnc_bind_address = 127.0.0.1 gnt-cluster info gnt-instance add -t plain -s 1G -n qrm.kosmos.sg -o debootstrap+default mail.kosmos.sg grep -Af | grep kvm Check to see correct arguments... /usr/bin/kvm -name mail.kosmos.sg -m 128 -smp 1 -pidfile /var/run/ganeti/kvm-hypervisor/pid/mail.kosmos.sg -daemonize -boot c -drive file=/var/run/ganeti/instance-disks/mail.kosmos.sg:0,format=raw,if=virtio,boot=on -kernel /boot/vmlinuz-2.6-kvmU -initrd /boot/initrd-2.6-kvmU -append "root=/dev/vda1 ro" -vnc 127.0.0.1:3 -usbdevice tablet -serial unix:/var/run/ganeti/kvm-hypervisor/ctrl/mail.kosmos.sg.serial,server,nowait -net nic,vlan=0,macaddr=aa:00:00:df:af:51,model=virtio Note: By default virtio is used (most distro's initrd has built-in support for this). Note: Default debootstrap does not setup network. gnt-instance console mail.kosmos.sg Check: -vnc host:d By convention the TCP port is 5900+d To mount instance disk on host, Read: http://alexeytorkhov.blogspot.com/2009/09/mounting-raw-and-qcow2-vm-disk-images.html lvdisplay losetup /dev/loop0 kpartx -a /dev/loop0 mount /dev/mapper/loop0p1 /mnt/image These tips below will help you tremendously. Please drop a message if so.

Follow: http://ganeti-doc.googlecode.com/svn/ganeti-2.1/html/install-quick.html
Follow: http://ganeti-doc.googlecode.com/svn/ganeti-2.1/html/install.html
Follow: http://geekfun.com/2009/07/14/tips-on-using-ganeti-to-manage-a-kvm-based-virtual-machine-cluster-on-ubunty-jaunty-jackelope-9-04/

For debootstrap:
Use:
./configure –prefix=/usr –localstatedir=/var \
–sysconfdir=/etc \
–with-os-dir=/srv/ganeti/os
make && make install

ln -s vmlinuz-2.6.24-11-pve /boot/kernel-2.6-kvmU
ln -s initrd.img-2.6.24-11-pve /boot/initrd-2.6-kvmU
gnt-cluster modify -H kvm:initrd_path=/boot/kernel-2.6-kvmU
gnt-cluster modify -H kvm:initrd_path=/boot/initrd-2.6-kvmU
gnt-cluster modify -H kvm:vnc_bind_address = 127.0.0.1
gnt-cluster info

gnt-instance add -t plain -s 1G -n qrm.kosmos.sg -o debootstrap+default mail.kosmos.sg
grep -Af | grep kvm
Check to see correct arguments…
/usr/bin/kvm -name mail.kosmos.sg -m 128 -smp 1 -pidfile /var/run/ganeti/kvm-hypervisor/pid/mail.kosmos.sg -daemonize -boot c -drive file=/var/run/ganeti/instance-disks/mail.kosmos.sg:0,format=raw,if=virtio,boot=on -kernel /boot/vmlinuz-2.6-kvmU -initrd /boot/initrd-2.6-kvmU -append “root=/dev/vda1 ro” -vnc 127.0.0.1:3 -usbdevice tablet -serial unix:/var/run/ganeti/kvm-hypervisor/ctrl/mail.kosmos.sg.serial,server,nowait -net nic,vlan=0,macaddr=aa:00:00:df:af:51,model=virtio

Note: By default virtio is used (most distro’s initrd has built-in support for this).
Note: Default debootstrap does not setup network.

gnt-instance console mail.kosmos.sg
Check: -vnc host:d
By convention the TCP port is 5900+d

To mount instance disk on host,
Read: http://alexeytorkhov.blogspot.com/2009/09/mounting-raw-and-qcow2-vm-disk-images.html
lvdisplay
losetup /dev/loop0
kpartx -a /dev/loop0
mount /dev/mapper/loop0p1 /mnt/image

]]> By: bithive http://geekfun.com/2009/07/14/tips-on-using-ganeti-to-manage-a-kvm-based-virtual-machine-cluster-on-ubunty-jaunty-jackelope-9-04/comment-page-1/#comment-39337 bithive Mon, 22 Feb 2010 23:35:09 +0000 http://geekfun.com/?p=1186#comment-39337 I just spent two days playing with ganeti and never once got an instance to boot under Xen or KVM. I was really hoping the information on this page would make the difference but it did not. I'm giving up on ganeti for a year or two until the documentation adds sections about "what to do if things don't work perfectly", as currently there are none. I just spent two days playing with ganeti and never once got an instance to boot under Xen or KVM. I was really hoping the information on this page would make the difference but it did not.

I’m giving up on ganeti for a year or two until the documentation adds sections about “what to do if things don’t work perfectly”, as currently there are none.

]]> By: Bob http://geekfun.com/2009/07/14/tips-on-using-ganeti-to-manage-a-kvm-based-virtual-machine-cluster-on-ubunty-jaunty-jackelope-9-04/comment-page-1/#comment-35954 Bob Wed, 19 Aug 2009 17:02:57 +0000 http://geekfun.com/?p=1186#comment-35954 OK, I beat my head against this thing for a couple of days, and I think figured out what the essential problem is: Ganeti expects kvm to use virtio disks, and kvm isn't happy about that. Now, I made dozens of changes and reversions and false starts in getting to the point that the ganeti instance would boot, so I could be forgetting some other essential issue here, but I think that the following two changes beyond what you've already done will work: First, after you first initialize your cluster, execute the command: gnt-cluster modify --hypervisor-parameters kvm:root_path=/dev/sda1 Then use the following command to create your instance: gnt-instance add -t plain -s1G -n -H kvm:disk_type=ide -o debootstrap Disclosure: By the time I got to the point of making this work, I'd given up on the stock debootstrap definitions and had built a version to bootstrap a Jaunty server instance, so I haven't tested this with the stock lenny defs. FWIW, I found this helpful in building my definitions: http://www.psychocats.net/ubuntucat/creating-a-passwordless-account-in-ubuntu/ Thanks for your post, it definitely saved me a bunch of time. OK, I beat my head against this thing for a couple of days, and I think figured out what the essential problem is: Ganeti expects kvm to use virtio disks, and kvm isn’t happy about that. Now, I made dozens of changes and reversions and false starts in getting to the point that the ganeti instance would boot, so I could be forgetting some other essential issue here, but I think that the following two changes beyond what you’ve already done will work:

First, after you first initialize your cluster, execute the command:

gnt-cluster modify –hypervisor-parameters kvm:root_path=/dev/sda1

Then use the following command to create your instance:

gnt-instance add -t plain -s1G -n -H kvm:disk_type=ide -o debootstrap

Disclosure: By the time I got to the point of making this work, I’d given up on the stock debootstrap definitions and had built a version to bootstrap a Jaunty server instance, so I haven’t tested this with the stock lenny defs. FWIW, I found this helpful in building my definitions:

http://www.psychocats.net/ubuntucat/creating-a-passwordless-account-in-ubuntu/

Thanks for your post, it definitely saved me a bunch of time.

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