bangmingcheng / fuel-plugin-external-ceph

external-ceph-2.0.1

Overview

This plugin allowes to use external Ceph cluster for storage of Volumes, Images, Objects and Ephemeral drives.

Requirements

Currently compatible only with Mirantis OpenStack 9.0.

Prerequisites

• Operational Ceph cluster deployed elsewhere
• Network connectivity between OpenStack nodes and Ceph cluster

The user should also consider using high-bandwidth links for communication with Ceph cluster.

Limitations

• As of 9.0 this plugin is indended to support configuring all storage to use external Ceph (Volumes, Images, Objects, Ephemeral). Other combinations of storage backends may have not been tested.
• User must configure RadosGW to use OpenStack environment's Keystone for authentication before using Object Storage.

Installing the plugin

• Copy the plugin to the Fuel node: scp external-ceph.rpm root@10.20.0.2:~
• Install the plugin: fuel plugins --install external-ceph.rpm

Configuring the plugin

• Create a new OpenStack environment
• (Important) skip the Storage tab of creation wizard
• Check "External Ceph" on Additional Services tab
• On Settings tab, in Storage group, fill in all the plugin's fields
• Add controller, compute etc nodes to the environment

Usage

From OpenStack POV there is no difference as if Ceph has been deployed locally in the OpenStack cluster.

Verification

• Image is uploaded during deployment process
• Create a volume
• Spawn an instance with Ephemeral storage
• Attach the volume to the instance
• Upload something into the object storage

Troubleshooting

Check following logs:

• /var/log/cinder/cinder-volume.log (controller)
• /var/log/glance/glance-api.log (controller)
• /var/log/nova/nova-compute.log (compute)

In case of issues with RadosGW, check radosgw logs on the Ceph cluster nodes.