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instance resizing on a running vm

Hi All, Is there any way to resize one running instance based on its RAM, CPU or disk individually in the latest openstack versions?

Found one similar question on this, but it was asked years back and there was no support for this then. https://openstack.nimeyo.com/39941/openstack-change-options-cpu-ram-nic-on-already-launched-vm

But I dont want resize giving some new flavor as described here - https://ask.openstack.org/en/question/92488/how-to-increase-the-memory-of-instance-without-changing-cpu-and-disk-size/

https://ask.openstack.org/en/question/1750/can-i-scale-upscale-down-computing-resourceie-cpu-ram-disk-on-running-vm-instances-without-shutting-it-down/

any open source tools or service available now to achieve this?

thanks in advance for the replies.

best regards