Ubuntu: How to configure MAAS to be able to boot virtual machines



Question:

I am running a virtual (kvm) MAAS/juju setup where most of the MAAS nodes (including MAAS master) are virtual, but some are also physical nodes. The physical Dell 1950 nodes configures automatically for boot in MAAS, so when i deploy via Juju they power on automatically. My problem lies in trying to set up boot for virtual systems. I see the posibility in the MAAS for power type. I can choose virsh. But i need to fill in information i do not know. What should i fill in for Driver and Power ID?

Anyone has experience with that?


Solution:1

In maas 1.2 through 1.8 the virsh power type requires only the Address and Power ID.

MAAS 1.8 Screenshot MAAS 1.8 virsh power settings

MAAS 1.2-1.4 Screenshot MAAS 1.2-1.4 virsh power settings

The libvirt-bin package needs to be installed to get the virsh command

$ sudo apt-get -y install libvirt-bin  

the Power ID is the name of the virtual machine shown by sudo virsh list --all

The address is a normal libvirt connect string:

qemu+ssh://ubuntu@10.0.0.2/system  

or

qemu:///system  

If you want to use ssh you'll need to generate a ssh key pair for the maas user. By default there is no home directory created for the maas user.

$ sudo mkdir -p ~maas  $ sudo chown maas:maas ~maas  

Add a login shell for the maas user (we'll only need this for the ssh-copy-id command later; if you're putting ssh keys in place manually or using a different mechanism, this step isn't strictly needed):

$ sudo chsh -s /bin/bash maas  

Generate a SSH keypair as the maas user (hit enter three times to accept the default path and empty password):

$ sudo -u maas ssh-keygen  Generating public/private rsa key pair.  Enter file in which to save the key (/home/maas/.ssh/id_rsa):   Created directory '/home/maas/.ssh'.  Enter passphrase (empty for no passphrase):   Enter same passphrase again:   Your identification has been saved in /home/maas/.ssh/id_rsa.  Your public key has been saved in /home/maas/.ssh/id_rsa.pub.  

Then add the public key to ~ubuntu/.ssh/authorized_keys on the vm server so virsh can use ssh without a password:

$ sudo -u maas -i ssh-copy-id ubuntu@10.0.0.2  

As the maas user, test virsh commands against libvirt at 10.0.0.2:

$ sudo -u maas virsh -c qemu+ssh://ubuntu@10.0.0.2/system list --all  


Solution:2

Driver and Username are not required for virsh. They will be deleted eventually.b


Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
Previous
Next Post »