[ovirt-devel] cloud-init metadata service

[Yaniv Kaul]

On Wed, Mar 1, 2017 at 4:53 PM Marc Young <3vilpenguin at gmail.com> wrote:

> Ive looked through what documentation I can find and i only come up on bug
> reports from years ago, but: is there anyway to get metadata about a oVirt
> server metadata from the context of a VM ? cloud-init supports a metadata
> service that sits on 169.254.169.254 to retrieve info like instance-id etc.
> This is very useful in AWS which I'm familiar with.
>

We support cloud-init via config drive, not over the network.


>
> My context is that I'd like to run some assertions against a VM and the
> test framework I'm using runs all assertions from within the VM itself. So
> If i wanted to assert that the host running my VM is "x.foo.com" I'd have
> to be able to retrieve that from within the VM. I can do that via the REST
> API but that requires me to get a REST user/pass inside the vm and feels
> hacky. The common way of doing this at openstack/aws is to curl the
> metadata service which replies with information only relevant to the
> machine asking.
>

Feels OK to me - doesn't sound too hacky to me.
You can do it via Ansible, but still need creds.
I don't remember if anything in the VM BIOS (dmidecode) will help you there
- I think not.
Y.


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