58f7582c63
Not as many of these as I thought there would be. Also, yes, the change to 'nova.conf.compute' is a doc change :) Change-Id: I27626984ce94544bd81d998c5fdf141875faec92 Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
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Resize
Resize (or Server resize) is the ability to change the flavor of a server, thus allowing it to upscale or downscale according to user needs. For this feature to work properly, you might need to configure some underlying virt layers.
This document describes how to configure hosts for standard resize.
For information on cross-cell resize <Cross-Cell Resize>, refer to
/admin/configuration/cross-cell-resize.
Virt drivers
This section needs to be updated for other virt drivers, shared storage considerations, etc.
KVM
Resize on KVM is implemented currently by transferring the images between compute nodes over ssh. For KVM you need hostnames to resolve properly and passwordless ssh access between your compute hosts. Direct access from one compute host to another is needed to copy the VM file across.
Cloud end users can find out how to resize a server by reading /user/resize.
Automatic confirm
There is a periodic task configured by configuration option
:oslo.configresize_confirm_window (in seconds). If this value
is not 0, the nova-compute service will check whether
servers are in a resized state longer than the value of
:oslo.configresize_confirm_window and if so will automatically
confirm the resize of the servers.