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Managing your cloud resources with OpenStack/en: Difference between revisions
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Managing your cloud resources with OpenStack/en (view source)
Revision as of 21:16, 25 January 2019
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=Working with Volumes= | =Working with Volumes= | ||
A volume provides storage which is not destroyed when a VM is terminated. On Compute Canada clouds, volumes use [https://en.wikipedia.org/wiki/Ceph_(software) Ceph] storage with a 3-fold replication factor to provide safety against hardware failure. More documentation about OpenStack volumes can be found [https://docs.openstack.org/cinder/latest/cli/cli-manage-volumes.html here] | A volume provides storage which is not destroyed when a VM is terminated. On Compute Canada clouds, volumes use [https://en.wikipedia.org/wiki/Ceph_(software) Ceph] storage with either a 3-fold replication factor or [https://en.wikipedia.org/wiki/Erasure_code erasure codes] to provide safety against hardware failure. On arbutus the ''Deault'' volume type uses erasure codes to provide data saftey while reducing the extra storage costs of 3-fold replication while the ''OS or Database'' volume type still uses the 3-fold replication factor. The More documentation about OpenStack volumes can be found [https://docs.openstack.org/cinder/latest/cli/cli-manage-volumes.html here] | ||
==Creating a Volume== | ==Creating a Volume== | ||
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==Accessing a Volume from a VM== | ==Accessing a Volume from a VM== | ||
[[File:Manage_attachments_EN.png|400px|thumb| Managing attachments command in Actions menu (Click for larger image)]] | [[File:Manage_attachments_EN.png|400px|thumb| Managing attachments command in Actions menu (Click for larger image)]] | ||
To access the volume you must first '''attach''' it to a running VM. This is analogous to inserting a USB key or plugging an external drive into your personal computer. You can attach a volume from the | To access the volume you must first '''attach''' it to a running VM. This is analogous to inserting a USB key or plugging an external drive into your personal computer. You can attach a volume from the Volumes page. | ||
* At the right-hand end of the line describing the volume | * At the right-hand end of the line describing the volume is the Actions column; from the dropdown menu, select "Manage Attachments". | ||
* In the "Attach To Instance" | * In the "Attach To Instance" dropdown menu, select a VM. | ||
* Click the blue "Attach Volume" button. | * Click the blue "Attach Volume" button. | ||
The process should complete in a few seconds. Then the | The process should complete in a few seconds. Then the Volumes page will show the newly created volume attached to your selected VM on <code>/dev/vdb</code> or some similar location. | ||
==Formatting and Mounting an Empty Volume== | ==Formatting and Mounting an Empty Volume== | ||