Hi,
Is there a way for the VM to identify that it is getting booted
in OpenStack?
As said in the below mail, once the VM knows it is booting in
OpenStack it will alter the boot sequence.
AWS provides signatures in the BIOS strings.
PS:
Changed the title to be more friendly.
Thanks,
Vijay V.
From: Vijay Venkatachalam [mailto:[email protected]]
Sent: Tuesday, November 26, 2013 8:58 PM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [Nova] Are BIOS strings configured in Hyper-V &
ESX similar to KVM instantiated VMs?
It is basically used to tailor the boot sequence if the VM gets booted in
OpenStack. For ex. it could do the following
1. Get IP through DHCP if booted in OpenStack
2. Read config drive or contact metadata service and init the system if
booted in OpenStack
Thanks,
Vijay V.
From: Bob Ball [mailto:[email protected]]
Sent: Tuesday, November 26, 2013 7:25 PM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [Nova] Are BIOS strings configured in Hyper-V &
ESX similar to KVM instantiated VMs?
It's not certain that this will be implemented for the XenAPI driver.
Our view is that the BIOS strings shouldn't be relied upon - the hypervisor can
clearly set them to anything so it's not really a reliable way to configure the
application. Also note that in some scenarios, such as PV guests in Xen
clouds, you will not have any BIOS to query. Finally we're not clear on the
use case here - What's the use case for needing to know whether you VM is
running under OpenStack or not?
Bob
From: Vijay Venkatachalam [mailto:[email protected]]
Sent: 26 November 2013 01:44
To: OpenStack Development Mailing List
([email protected]<mailto:[email protected]>)
Subject: [openstack-dev] [Nova] Are BIOS strings configured in Hyper-V & ESX
similar to KVM instantiated VMs?
Hi,
In a KVM instantiated VM the following signature is present in the BIOS of the
VM
The 'Manufacturer ' field in 'System Information' group is set to "OpenStack
Foundation"
This helps the VM to identify that it is getting used in an OpenStack
environment.
As far as I know XenServer is planning to set the BIOS Strings in IceHouse
release.
Is this functionality available in other Hypervisors, especially Hyper-V & ESX?
Thanks,
Vijay V.
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