bbfdeb84f0
This changeset provides pause and resume actions to the ceph charm. The pause action issues a 'ceph osd out <local_id>' for each of the ceph osd ids that are on the unit. The action does not stop the ceph osd processes. Note that if the pause-health action is NOT used on the ceph-mon charm then the cluster will start trying to rebalance the PGs accross the remaining OSDs. If the cluster might reach its 'full ratio' then this will be a breaking action. The charm does NOT check for this eventuality. The resume action issues a 'ceph osd in <local_id>' for each of the local ceph osd process on the unit. The charm 'remembers' that a pause action was issued, and if successful, it shows a 'maintenance' workload status as a reminder. Change-Id: I9f53c9c6c4bb737670ffcd542acec0b320cc7f6a
Overview
Ceph is a distributed storage and network file system designed to provide excellent performance, reliability, and scalability.
This charm deploys additional Ceph OSD storage service units and should be used in conjunction with the 'ceph' charm to scale out the amount of storage available in a Ceph cluster.
Usage
The charm also supports specification of the storage devices to use in the ceph cluster::
osd-devices:
A list of devices that the charm will attempt to detect, initialise and
activate as ceph storage.
This this can be a superset of the actual storage devices presented to
each service unit and can be changed post ceph-osd deployment using
`juju set`.
For example::
ceph-osd:
osd-devices: /dev/vdb /dev/vdc /dev/vdd /dev/vde
Boot things up by using::
juju deploy -n 3 --config ceph.yaml ceph
You can then deploy this charm by simple doing::
juju deploy -n 10 --config ceph.yaml ceph-osd
juju add-relation ceph-osd ceph
Once the ceph charm has bootstrapped the cluster, it will notify the ceph-osd charm which will scan for the configured storage devices and add them to the pool of available storage.
Contact Information
Author: James Page james.page@ubuntu.com Report bugs at: http://bugs.launchpad.net/charms/+source/ceph-osd/+filebug Location: http://jujucharms.com/charms/ceph-osd