How to configure MAAS to be able to boot virtual machines
Solution 1
In maas 1.2 through 1.8 the virsh power type requires only the Address and Power ID.
MAAS 1.2-1.4 Screenshot
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://[email protected]/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 [email protected]
As the maas user, test virsh commands against libvirt at 10.0.0.2:
$ sudo -u maas virsh -c qemu+ssh://[email protected]/system list --all
Solution 2
Driver and Username are not required for virsh. They will be deleted eventually.b
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dhojgaard
Love the free beer "Ubuntu", nah just kidding, actually love the freedom philosophy. "We had nothing, we give what we gained for free"
Updated on September 18, 2022Comments
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dhojgaard over 1 year
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?
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Admin almost 11 yearsi am trying to get that kvm and maas , please explain how you setup all the things to get working
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bigjools over 10 yearsI'm putting this answer in the official MAAS docs. Thanks!
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monokrome over 9 yearsBut what do you do if
virsh -c qemu:///system list --all
is an empty result set? -
dimitern over 9 yearsRunning
virsh -c qemu:///system list --all
on the 10.0.0.2 machine is equivalent to runningvirsh -c qemu+ssh://[email protected]/system list --all
on another machine, provided the "ubuntu" user on 10.0.0.2 is added to the "libvirtd" group (i.e. can access running KVM nodes) and has an authorized SSH key to allow you to connect to [email protected] without a password. -
qris almost 9 yearsYour KVM virtual machines might be owned by the root account, not a normal user. Then you need to connect using
qemu+ssh://[email protected]/system
instead, and the SSH key needs to allow passwordless access toroot
, not theubuntu
user. Needless to say, this is rather insecure :)