Stephen Finucane da224b3a05 doc: Import configuration reference
Import the following files from the former config-reference [1]:

  api.rst
  cells.rst
  fibre-channel.rst
  hypervisor-basics.rst
  hypervisor-hyper-v.rst
  hypervisor-kvm.rst
  hypervisor-lxc.rst
  hypervisor-qemu.rst
  hypervisor-virtuozzo.rst
  hypervisor-vmware.rst
  hypervisor-xen-api.rst
  hypervisor-xen-libvirt.rst
  hypervisors.rst
  index.rst
  iscsi-offload.rst
  logs.rst
  resize.rst
  samples/api-paste.ini.rst
  samples/index.rst
  samples/policy.yaml.rst
  samples/rootwrap.conf.rst
  schedulers.rst

The below files are skipped as they're already included, in slightly
different forms, in the nova documentation.

  config-options.rst
  nova-conf-samples.rst
  nova-conf.rst
  nova.conf

Part of bp: doc-migration

Change-Id: I145e38149bf20a5e068f8cfe913f90c7ebeaad36
2017-08-09 11:20:12 -04:00

958 B

Configure 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.

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 the OpenStack End User Guide <https://docs.openstack.org/user-guide/ cli_change_the_size_of_your_server.html>.

XenServer

To get resize to work with XenServer (and XCP), you need to establish a root trust between all hypervisor nodes and provide an /image mount point to your hypervisors dom0.