Better handling of optional roles (min/default cardinality 0)

[OpenNebulaProject]

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Author Name: EOLE Team (EOLE Team)
Original Redmine Issue: 4310, https://dev.opennebula.org/issues/4310
Original Date: 2016-01-27
Original Assignee: Abel Coronado

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Hello,

I just created a service with optional roles:

<code class="javascript">
    {
      "name": "PC_admin",
      "cardinality": 0,
      "vm_template": 12780,
      "parents": [
        "Horus"
      ],
      "min_vms": 0,
      "max_vms": 5,
      "elasticity_policies": [

      ],
      "scheduled_policies": [

      ]
    },
</code>

Here is my review:

• the cloud view does not support well:
  ** the @0@ cardinality, the cursor is outside the cardinality bar
  ** it's not possible to reset the cardinality @0@
• starting the service works as expected, the optional VMs are not deployed but their status is @running@:

ROLE PC_admin
ROLE STATE          : RUNNING
PARENTS             : Horus
VM TEMPLATE         : 12780
CARDINALITY         : 0
MIN VMS             : 0
MAX VMS             : 5
NODES INFORMATION
 VM_ID NAME                    STAT UCPU    UMEM HOST                       TIME

• scaling the optional VMs works, but I can not set it to @0@

Regards.

[OpenNebulaProject]

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Original Redmine Comment
Author Name: EOLE Team (EOLE Team)
Original Date: 2016-07-19T10:19:00Z

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I tested with 5.0 and the issue is still present.

[OpenNebulaProject]

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Original Redmine Comment
Author Name: EOLE Team (EOLE Team)
Original Date: 2017-06-08T14:30:35Z

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I tested with 5.4 and things are a little better except for cloud view:

• We can define a role with @min VMs@ at @0@: attachment:flow-define-role-with-min-0-max-1.png
• The service can be deployed with a cardinality of @0@: attachment:flow-service-OK-without-VM.png
• The cloud view does not permit to scale the role, either up or down: attachment:flow-cloud-view-can-not-scale.png
• The user view permit to scale the role
  ** Scale up
  *** attachment:flow-user-view-can-scale-up.png
  *** attachment:flow-user-view-scaling-up.png
  ** Scale down
  *** attachment:flow-user-view-can-scale-down.png
  *** attachment:flow-user-view-scaling-down.png
• The user view permit to choose a value outside @min VMs@ and @max VMs@: attachment:flow-user-view-do-not-limit-scale.png

[OpenNebulaProject]

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Original Redmine Comment
Author Name: EOLE Team (EOLE Team)
Original Date: 2017-06-08T14:31:15Z

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Add missing screenshots.

[OpenNebulaProject]

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Original Redmine Comment
Author Name: EOLE Team (EOLE Team)
Original Date: 2017-06-08T14:32:40Z

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Note that the error message when I tried to scale too much is not very informative.

Regards.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. The OpenNebula Dev Team

[tinova]

Relevant for OneFlow revamp

[rsmontero]

Onflow handles this type of flows. This issue is about rendering 0 VMs roles in Sunstone/Cloud view

[sbbarragan]

PRs to merge:

• one: OpenNebula/one-ee/pull/722 OpenNebula/one-ee/pull/731 OpenNebula/one-ee/pull/1038
• doc: B OpenNebula/one#1019: Add bug to whats new docs#1428
• dev: OpenNebula/development/pull/1399 OpenNebula/development/pull/1410

[tinova]

needs testing