Public bug reported:
My question is the following (maybe a feature request, I do no how to
create one) :
Imagine a service like GlusterFS requiring to migrate data from removed
bricks before shuting-down the node(s) that will be removed from the
cluster.
gluster/0 with volume1
gluster/1 with volume2 (replica=2)
gluster/2 with volume2 (replica=2)
How exactly juju triggers the hooks of the units of that service ?
I imagine that all units are aware of the departure of gluster/2 if we remove
gluster/2.
A good feature will be to have, as user, a way to express our desire to
scale-down the service without specifying one particular unit, unlike
juju remove-unit.
Another will be, as unit of the service, a way to "decide" to cancel or
warn the user helped by juju. For example, if the user uses juju remove-
unit gluster/0 it will loose all data of volume1 !
Kind Regards,
David
** Affects: juju (Ubuntu)
Importance: Undecided
Status: New
** Tags: juju remove-unit
** Summary changed:
- A command to scale-out a service safely.
+ A command to scale-down a service safely.
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https://bugs.launchpad.net/bugs/1183508
Title:
A command to scale-down a service safely.
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