[openstack-dev] [Fuel] [Fuel UI] Node role list grouping

Julia Aranovich jkirnosova at mirantis.com
Fri Jan 29 08:55:00 UTC 2016

Hi folks,

Our team has started a redesign of node roles panel [1] on Add Nodes/Edit
Roles screens in Fuel UI.
Currently, node roles panel takes a big part of the screen and User have to
scroll down to node list to check nodes and then scroll up again to check
roles. This becomes more actual for desktops with a small screen.

And we faced with the question of grouping new role containers in the
panel. There is out initial suggestion [2]:

[image: role-list-grouping-1.png]

   - the first group (the first line on the screenshot) is roles which are
   required or recommended for deployment (controller, compute, cinder, etc.).
   - the second group is optional roles which are not mandatory for
   deployment (base-os, virt, etc.)
   - the last group is roles which are unavailable at the moment because of
   some restrictions. For example, mongo role can not be assigned to a node if
   ceilometer setting is not enabled on Settings tab

BUT there is also a suggestion [3] (see comment #6) to add a new role
'category' attribute into its yaml description [4] that will reflect the
role function.
For example, cinder, ceph-osd, cinder-vmware roles are from Storage
category; compute, ironic are Compute and so on.
This new 'category' attribute will also allow proper calculating of an
environment capacity: it does not make sense to count CPU and RAM of
non-compute nodes or HDD of non-storage nodes.

So, we have an initial proposal for such a grouping by a role category:

CONTROLLER: controller
COMPUTE: compute, virt, compute-vmware, ironic
STORAGE: cinder, cinder-block-device, cinder-vmware, ceph-osd
OTHER: base-os, mongo

And we ask your help to review this grouping, i.e. to define the list of
possible role categories and to distribute the roles between these

Best regards,

P.S. We also should take into account, that Fuel plugins can also provide
their own roles.

[1] https://blueprints.launchpad.net/fuel/+spec/redesign-of-node-roles-panel
[2] http://s22.postimg.org/x8ry0lm1t/Screenshot_from_2016_01_26_17_49_24.png
[3] https://bugs.launchpad.net/fuel/+bug/1375750
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