API: Allow user to specify image to use during rescue
Current workflow:
When a rescue is done on an instance, the image_base_ref in the instance_meta_data is used.
In the case where this attribute is not populated, the custom image_ref is used instead.
Problem faced:
The custom image used might be corrupt, leading to errors, or too large, leading to timeouts.
Also, if the base image is deleted, the image ref on the instance_
The user should be allowed to specify which image is to be used for rescue. (could be a default base image or a custom image).
Sample API for specifying image to be used to rescue an instance:
POST: /v2/d1b123/
This would use image with ref "a88ddc123" to rescue instance with uuid "7d14f8123"
Scenarios:
Case 1: If image_ref is specified as part of the rescue request, that image will be used.
Case 2: If image_ref is not specified as part of the rescue request, image_base_
Blueprint information
- Status:
- Complete
- Approver:
- John Garbutt
- Priority:
- Low
- Drafter:
- Aditi Raveesh
- Direction:
- Approved
- Assignee:
- Aditi Raveesh
- Definition:
- Approved
- Series goal:
- Accepted for juno
- Implementation:
-
Implemented
- Milestone target:
-
2014.2
- Started by
- John Garbutt
- Completed by
- John Garbutt
Related branches
Related bugs
Sprints
Whiteboard
This makes sense to me, especially to account for the case of a base image being deleted. I think a default base image based on os_type is out of scope for what you've described. If you amend this to just be about optionally passing in an image for rescue I'm ok with this. --alaski
I agree, seems like the scope has been reduced now, approving --johnthetubaguy
Gerrit topic: https:/
Addressed by: https:/
Allow user to specify image to use during rescue
Addressed by: https:/
Allow user to specify image to use during rescue - V2 API changes
Apologies, this missed the deadline for Feature Freeze. Please rebase patches as soon as Juno opens, and we will try to get this in during that period. --johnthetubaguy (5th March 2014)
Addressed by: https:/
Allow user to specify image to use during rescue - V3 API changes
Unapproved - please re-submit via nova-spec --johnthetubagy (20th March 2014)
Addressed by: https:/
Proposed blueprint to allow image to be passed during rescue.
This now has an approved nova-spec, and code up for review. It can probably be targeted for Juno-1 and approved. --johnthetubaguy
Merged patches
============
Addressed by: https:/
Allow user to specify image to use during rescue
Addressed by: https:/
Allow user to specify image to use during rescue - V2 API changes
Patches to review...
================
Addressed by: https:/
Allow user to specify image to use during rescue - V3 API changes
Bumping to j-2 because not all code has merged in time for j-1. --mikalstill (11th June 2014)
