Hi Dionysis,
The only recommended way to change resources managed by OpenStack
services is through the services API.
In your case you should explore the Nova API to find the operation that
provides the change you are looking for to apply.
Best,
Thanassis
Thanassis Parathyras
StackMasters - The European OpenStack Integration Company
www.stackmasters.eu
On 30/11/2015 3:04 μμ, Drakopoulos, Dionisis (Nokia - GR/Athens) wrote:
Good afternoon to all!
As I have read, NOVA interacts with QEMU/KVM through libvirt virtualization
API. Virtual Machine instances are defined in libvirt by the use of an XML file
which lives in /etc/libvirt/qemu/ path of each compute node.
Based on the following Launchpad bug (link below), starting from OpenStack Nova 2013.1 release, let
me quote: " There's no reason to ever use the the XML files stored in the instances directory;
it is there for operational purposes only." and "This will undo any one-off/by-hand
changes in favor of absolute consistency with the database, which is preferred.".
https://bugs.launchpad.net/nova/+bug/1081373
So, the question is simple. What operation to follow in order to permanently
change instance metadata by editing this XML file? Or else, edit Nova database
records?
Thank you in advance!
Dionisis (Dennis) Drakopoulos
OMP MP SW Engineer/SyVe/Maintenance/SL
MBB OMP MP R&D 14 GR
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