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Removed duplicate abbrev definitions Signed-off-by: Rafael Jardim <rafaeljordao.jardim@windriver.com> Change-Id: I7910d9f54e158250004abd7e17a4e119f8064252 Signed-off-by: Ron Stone <ronald.stone@windriver.com>
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Storage on Controller Hosts
The controllers provide storage for the OpenStack Controller Services through a combination of local container ephemeral disk, Persistent Volume Claims backed by Ceph and a containerized HA mariadb deployment.
On systems configured for controller storage with a small Ceph cluster on the master/controller nodes, they also provide persistent block storage for persistent volumes (Cinder), storage for images (Glance), and storage for remote ephemeral volumes (Nova). On All-in-One Simplex or Duplex systems, the controllers also provide nova- local storage for ephemeral volumes.
On systems configured for controller storage, the master/controller's root disk is reserved for system use, and additional disks are required to support the small Ceph cluster. On a All-in-One Simplex or Duplex system, you have the option to partition the root disk for the nova-local storage (to realize a two-disk controller) or use a third disk for nova-local storage.
Underlying Platform Filesystem Storage
See the platform Planning <overview-of-starlingx-planning>
documentation for details.
To pass the disk-space checks, any replacement disks must be installed before the allotments are changed.
Glance, Cinder, and Remote Nova storage
On systems configured for controller storage with a small Ceph
cluster on the master/controller nodes, this small Ceph cluster on the
controller provides Glance image storage, Cinder block storage, Cinder
backup storage, and Nova remote ephemeral block storage. For more
information, see Block Storage
for Virtual Machines <block-storage-for-virtual-machines>.
Nova-local Storage
Controllers on Simplex or Duplex systems incorporate the Compute
function, and therefore provide nova- local storage for
ephemeral disks. On other systems, nova- local storage
is provided by compute hosts. For more information about this type of
storage, see Storage on Compute Hosts
<storage-on-compute-hosts> and Block Storage for Virtual Machines
<block-storage-for-virtual-machines>.