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Attempting to build the documentation with "tox -e docs" results in a failure due to several lint errors. This patch fixes those errors so that the docs build successfully. The 'docs' target is also added to the 'linters' target chain so that the doc8 linting is executed as part of the lint checks to ensure that these issues don't re-occur. Change-Id: I9e1bf2cabe9a0591963d1afadbeb24cb614e0b27
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Home OpenStack-Ansible Installation Guide
Storage architecture
OpenStack Ansible supports Block Storage (cinder) and Object Storage (swift).
Block storage (cinder)
Important
The actual Block Storage service is not handled by OpenStack Ansible. The exception to this is the LVM backend storage on physical hosts.
When using LVM, you have separate physical hosts with the volume groups that cinder volumes will use. For any other external cinder storage including Ceph, EMC, NAS, and NFS, set up a container inside one of the infra hosts.
Note
cinder_volumes do not run in HA active/active mode. This is not to be set up on
multiple hosts. If you have multiple storage backends, set up one per
volumes container. For more information: https://specs.openstack.org/openstack/cinder-specs/specs/mitaka/cinder-volume-active-active-support.html.
Networking for Block Storage (cinder)
Configure cinder-api infra hosts with
br-storage for storage requests and br-mgmt
for API requests. cinder-volumes hosts require
br-storage.
Object Storage (swift)
Networking for Object Storage (swift)
Ensure the proxy hosts for swift are on br-mgmt and
br-storage. br-storage handles the retrieval
and upload of objects to the storage nodes. br-mgmt handles
the API requests.
Ensure storage hosts are on br-storage. When using
dedicated replication, also ensure storage hosts are on
br-repl. br-storage handles the transfer of
objects from the storage hosts to the proxy and vice-versa.
br-repl handles the replication of objects between storage
hosts, and is not needed by the proxy containers.
br-repl is optional. Replication occurs over the
br-storage interface when there is no br-repl
replication bridge.