Scheduling interaction for cells
In order to schedule instance builds to compute hosts Nova and the scheduler will need to take into account that hosts are grouped into cells. It is not necessary that this is apparent when Nova is requesting a placement decision.
Blueprint information
- Status:
- Complete
- Approver:
- John Garbutt
- Priority:
- High
- Drafter:
- Andrew Laski
- Direction:
- Approved
- Assignee:
- Dan Smith
- Definition:
- Approved
- Series goal:
- Accepted for ocata
- Implementation:
-
Implemented
- Milestone target:
-
ocata-3
- Started by
- Andrew Laski
- Completed by
- Matt Riedemann
Related branches
Related bugs
Sprints
Whiteboard
lets bump this one, doesn't seem likely for liberty now. --johnthetubaguy 27th August 2015
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Proposal for cells v2 scheduling interaction
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Clean up filter_
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WIP Persist the request spec during an instance boot
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WIP Populate instance_mappings during boot.
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WIP Add buildrequest db/object
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WIP Create Instance from BuildRequest if not in a cell
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Add BuildRequest object
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Create BuildRequest object during boot process
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Change populate_
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Improve unit tests for instance multiple create
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Make InstanceMapping
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Include CellMapping in InstanceMapping object
So lets stop here:
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Marking as needs code review and partial.
So the remaining patches that have a +W already get a FFE, so we can merge what we have reviewed. --johnthetubaguy 3rd March 2016
Re-opening this for Newton since it was partially implemented in Mitaka. We could create a new blueprint, but then we have to update the links in all of the patches, and the other bp dependencies, and the spec links, it just gets to be a mess, so I'm just going to re-open this and move forward. -- mriedem 20160317
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Re-propose scheduling interaction for cells
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Add BuildRequest object
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WIP Move instance creation to conductor
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Cells: Handle delete with BuildRequest
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Stop instance build if BuildRequest deleted
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Add BuildRequestList object
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WIP Pull from cell0 and build_requests for instance list
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New discover command to add new hosts to a cell
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We still have work to do here so this is getting deferred to Ocata. -- mriedem 20160901
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Add schedule_
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Tests: improve assertJsonEqual diagnostic message
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WIP Make schedule_
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WIP Return build_requests instead of instances
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Add schedule_
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Proposal for cells v2 scheduling interaction
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Add CellDatabase fixture
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Refactor two nearly useless secgroup tests
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Store security groups in RequestSpec
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Rename security_group parameter in compute.API:create
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WIP: Transform requested secgroup names to uuids
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Make RPCFixture support multiple connections
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Add NeutronSecurity
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Return list of NeutronSecurity
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WIP Multicell support for instance listing
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WIP Experimenting with CellDatabases test fixture
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Add a CellDatabases test fixture
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Reset indirection_api for each test
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Add SingleCellSimple fixture
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Add SecurityGroup.
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Fix up non-cells-aware context managers in test_db_api
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Setup CellsV2 environment in base test
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Make servers api view load instance fault from proper cell
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Fix non-parameterized service id in hypervisors sample tests
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Make the SingleCellSimple fixture a little more comprehensive
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WIP: Make api_samples tests use simple cell environment
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WIP: nova-status: implement _check_cellsv2
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Add nova-status upgrade check command framework
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Add basic placement status checking
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WIP: Make metadata server know about cell mappings
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Don't bypass cellsv1 replication if cellsv2 maps are in place
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WIP: Remove duplicate BDM validation
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WIP: Collected release notes for Ocata CellsV2
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Revert "Move instance creation to conductor"
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Fix non-parameterized service id in hypervisors sample tests
Work Items
Dependency tree
* Blueprints in grey have been implemented.
