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Is it necessary and mandatory to install cinder or swift?

asked 2017-05-19 05:56:22 -0500

trinh.quang gravatar image

Hi every body I am new user. I installed openstack version newton in 2 nodes: controller node and compute node I do not install cinder nor swift And I still can create instances Is it necessary and mandatory to install cinder or swift? Thanks all

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No, they are not mandatory. The default is that nova uses file based storage for instances: the base image is copied to the compute node into /var/lib/nova/instances/_base/, then a diff for each instance launched from this base image is stored under /var/lib/nova/instances/<instance_uuid>/disk

eblock gravatar imageeblock ( 2017-05-22 04:50:43 -0500 )edit

disk details:

root@compute:~ # file /var/lib/nova/instances/<INSTANCE>/disk
/var/lib/nova/instances/<INSTANCE>/disk: QEMU QCOW Image (v3), has backing file (path /var/lib/nova/instances/_base/<BASEIMAGE>)
eblock gravatar imageeblock ( 2017-05-22 04:52:31 -0500 )edit

But if you don't have cinder or swift installed, you won't be able to provide block storage for your instances. See the docs for details.

eblock gravatar imageeblock ( 2017-05-22 04:57:15 -0500 )edit

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answered 2017-05-22 08:48:13 -0500

updated 2017-05-22 08:48:42 -0500

Like mentioned in the comments. Openstack itself works well without cinder & swift.

But, certain features will be not available.

If you let us know what your goals are we may can help you with the decision if you need cinder/swift or not.

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Asked: 2017-05-19 05:56:22 -0500

Seen: 189 times

Last updated: May 22 '17