How to avoid downtime when resizing virtual machines

Posted by Ivan Buttinoni on Server Fault See other posts from Server Fault or by Ivan Buttinoni
Published on 2013-10-28T22:06:17Z Indexed on 2013/10/29 3:58 UTC
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linux

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virtualization

Many IaaS provider offer dynamic upgrade/downgrade of RAM and cores.

Usually a Linux VM has to be rebooted to apply these changes.

Sometimes, things like VMware tools or other guest services are well integrated so the upgrades to resources are immediately available, but the downgrades still need reboot.

How can I solve this issue, so that when downgrading resources I do not have to reboot my guests?

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