drbd-devstack/README.rst
Ian Wienand 2d4295d3ab Replace openstack.org git:// URLs with https://
This is a mechanically generated change to replace openstack.org
git:// URLs with https:// equivalents.

This is in aid of a planned future move of the git hosting
infrastructure to a self-hosted instance of gitea (https://gitea.io),
which does not support the git wire protocol at this stage.

This update should result in no functional change.

For more information see the thread at

 http://lists.openstack.org/pipermail/openstack-discuss/2019-March/003825.html

Change-Id: I7f99eb9daa23d750890452b718151a0dd860117c
2019-03-24 20:33:31 +00:00

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=============
drbd-devstack
=============
DRBD installation helper for DevStack.
* Free software: Apache license
This plugin helps to install the DRBD backend for Cinder
(and, later on, Nova) in a devstack install.
Usage
-----
Put some lines similar to these in your `local.conf`:
enable_plugin drbd-devstack https://git.openstack.org/openstack/drbd-devstack
CINDER_ENABLED_BACKENDS=drbd:drbdmanage
A few environment variables can be set to modify the behaviour:
* `CINDER_DRBD_NO_STORAGE` means `--no-storage`
* `CINDER_DRBD_NO_CV` gets translated to `--no-control-volume`.
This is allowed only for additional nodes, and not the initial drbdmanage node that *has* to create a control volume.
* `CINDER_DRBD_USE_DRBD_PROTOCOL` makes the driver use the DRBD protocol to provide storage to the Nova nodes.
Secondary nodes are detected by having `$SERVICE_HOST` unequal to `$HOST_IP`, and therefore register themselves as additional nodes in drbdmanage.