Keep an instance in queue and launch later when resources are available

Registered by Ritesh Paiboina

To launch an instance critical resources like availability of RAM, v CPU's are required . In absence of RAM or v CPU , an instance cannot be launched. This makes a user to wait till the resources are available and re-try once again.

To overcome this , we planned to add a new service namely as N-queue. N-queue , which would be part of Nova, It will keep user requests of instance launch in a queue and will launch instances when the resources are available.
This gives a advantage to user not to re-try again again to wait until resources are available to launch.

Blueprint information

Status:
Not started
Approver:
John Garbutt
Priority:
Undefined
Drafter:
Ritesh Paiboina
Direction:
Needs approval
Assignee:
Ritesh Paiboina
Definition:
New
Series goal:
None
Implementation:
Unknown
Milestone target:
None

Related branches

Sprints

Whiteboard

Please submit a nova-spec for this. --johnthetubaguy

Gerrit topic: https://review.openstack.org/#q,topic:bp/instance-queue-on-insufficient-resources,n,z

Addressed by: https://review.openstack.org/170212
    Keep an instance in queue and launch later when resources are available

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