Open Stack

Hi,


We discovered the use of qemu-guest-agent in openstack,Set hw_qemu_guest_agent=yes to the metadata parameter on the image.
https://docs.openstack.org/mitaka/config-reference/compute/hypervisor-kvm.html


Meanwhile, the application of qemu-guest-agent in cloud scenarios is investigated. It is found that Qemu-guest-Agent can be used for guest os performance monitoring, snapshot backup, and guest OS-level failover.
But these things can be done in openstack with prometheus and  instance backup,There may be some differences between them.


Sorry, I am not familiar with how hw_qemu_guest_agent is used in openstack, and I do not know the operations that can be performed on guest os in openstack by configuring hw_qemu_guest_agent.
Only through qemu official know some of the effects.I want to clarify the use of hw_qemu_guest_agent. Other components of openstack, such as the prometheus service, can be used instead.
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