3143d86b69
Updates for patchset 2 review comments Changed link depth of main Planning index and added some narrative guidance Added planning/openstack as sibling of planning/kubernetes Related additions to abbrevs.txt Added max-workers substitution to accomodate StarlingX/vendor variants Signed-off-by: Ron Stone <ronald.stone@windriver.com> Change-Id: Ibff9af74ab3f2c00958eff0e33c91465f1dab6b4 Signed-off-by: Stone <ronald.stone@windriver.com>
96 lines
3.7 KiB
ReStructuredText
Executable File
96 lines
3.7 KiB
ReStructuredText
Executable File
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.. bfh1466190844731
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.. _storage-configuration-storage-by-host-type:
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======================
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Storage Configurations
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======================
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.. contents:: |minitoc|
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:local:
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:depth: 1
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---------------------------
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Storage on controller hosts
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---------------------------
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.. _storage-configuration-storage-on-controller-hosts:
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The controllers provide storage for the |prod-os|'s OpenStack Controller
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Services through a combination of local container ephemeral disk, |PVCs| backed
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by Ceph and a containerized HA mariadb deployment.
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On systems configured for controller storage with a small Ceph cluster on the
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master/controller nodes, they also provide persistent block storage for
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persistent |VM| volumes \(Cinder\), storage for |VM| images \(Glance\), and
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storage for |VM| remote ephemeral volumes \(Nova\). On All-in-One Simplex or
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Duplex systems, the controllers also provide nova-local storage for ephemeral
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|VM| volumes.
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On systems configured for controller storage, the master/controller's root disk
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is reserved for system use, and additional disks are required to support the
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small Ceph cluster. On a All-in-One Simplex or Duplex system, you have the
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option to partition the root disk for the nova-local storage \(to realize a
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two-disk controller\) or use a third disk for nova-local storage.
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.. _storage-configuration-storage-on-controller-hosts-section-N10031-N10024-N10001:
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**************************************
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Underlying platform filesystem storage
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**************************************
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To pass the disk-space checks, any replacement disks must be installed before
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the allotments are changed.
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.. _storage-configuration-storage-on-controller-hosts-section-N1010F-N1001F-N10001:
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***************************************
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Glance, Cinder, and remote Nova storage
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***************************************
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On systems configured for controller storage with a small Ceph cluster on the
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master/controller nodes, this small Ceph cluster on the controller provides
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Glance image storage, Cinder block storage, Cinder backup storage, and Nova
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remote ephemeral block storage. For more information, see :ref:`Block Storage
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for Virtual Machines <block-storage-for-virtual-machines>`.
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.. _storage-configuration-storage-on-controller-hosts-section-N101BB-N10029-N10001:
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******************
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Nova-local storage
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******************
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Controllers on |prod-os| Simplex or Duplex systems incorporate the Compute
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function, and therefore provide **nova-local** storage for ephemeral disks. On
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other systems, **nova-local** storage is provided by compute hosts. For more
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information about this type of storage, see :ref:`Storage on Compute Hosts
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<storage-on-compute-hosts>` and :ref:`Block Storage for Virtual Machines
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<block-storage-for-virtual-machines>`.
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You can add a physical volume using the system :command:`host-pv-add` command.
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.. xbooklink For more information, see Cloud Platform Storage Configuration: :ref:`Adding a Physical Volume <adding-a-physical-volume>`.
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.. _storage-on-storage-hosts:
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------------------------
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Storage on storage hosts
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------------------------
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|prod-os| creates default Ceph storage pools for Glance images, Cinder volumes,
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Cinder backups, and Nova ephemeral data.
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.. xbooklink For more information, see the :ref:`Platform Storage Configuration <storage-configuration-storage-resources>` guide for details on configuring the internal Ceph cluster on either controller or storage hosts.
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.. _storage-on-compute-hosts:
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------------------------
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Storage on compute hosts
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------------------------
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Compute-labelled worker hosts can provide ephemeral storage for |VM| disks.
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.. note::
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On All-in-One Simplex or Duplex systems, compute storage is provided using
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resources on the combined host.
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