Juju Charms Collection
mysql package

Code review comment for lp:~openstack-charmers/charms/precise/mysql/ha-support

  1. Precise Pangolin (12.04)
  2. ha-support
  3. Merge into trunk
Revision history for this message
Andres Rodriguez (andreserl) wrote :

Hi Marco,

To answer your question, no, it is not required to be unique per MySQL deployment. So the way this works is that SERVICE_NAME creates a pool on which the rbd-name (which is used to create the image) is created. So for example I deploy 3 mysql units against 1 ceph for HA (juju deploy mysql -n) they all need access to the same image (hence the same pool).

Now, however, if I deploy X mysql services (with various units) as mysqlX, mysqlY, etc (juju deploy mysql mysqlX && juju deploy mysql mysqlY) against 1 ceph, each mysqlX service will have to access to a corresponding 'pool' where the image rbd-name is created. So there would be 2 pools of images 'mysqlx', 'mysqly' each with an image called 'mysql1'.

Hope this helps.

Regards.

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