This page will document the impacts for each goal within the Scale In Use Case
Goal: Manual and Automatic Scale In
APPC
- ConfigScaleIn
- APPC will support a new LCM action ConfigScaleIn
- APPC will need to support accepting a new ConfigScaleIn request from MSO
- APPC will accept the payload sent from MSO. Included in the request will be the VF Module ID to be removed.
- APPC will send the ConfigScaleOut request to the VNF via REST API
- Pre Action Phase
- Need to decide what tasks we will execute in this phase so that we can write the requirements "How"
- Post Action Phase
- Need to decide what tasks we will execute in this phase so that we can write the requirements "How"
- Distribute_Traffic
- APPC will accept and process a DistributeTraffic request from MSO via DMaaP
- DistributeTraffic action will be enhanced to specify a VM as the target
- Quiesce_traffic for VNFCs
- APPC will accept and process a QuiesceTraffic request from MSO via DMaaP
QuiesceTraffic action will be enhanced to specify a VM as the target
CLAMP
- Scale In Closed Loop
- Guard Policies
- Create Guard Policy to remove last VM added to in the pool. (Assume: That the Base Module or any VM within the Base Module cannot be scaled)
DCAE
- Scale In Trigger
- Support creating a Threshold Alert (TA) when capacity needs to be reduced
- Send the TA to Policy
OOF
- Scale In Target (Set up meeting with Policy, OOF, SO)
Policy
- Scale In Policy
- Support sending Operational Policy request via DMaaP to SO
- Create Operational Policy for a Scale In Request
- Guard Policies
- Accept Guard Policy from CLAMP for Scale In operations. This request should specify the VM(s) to be removed
Scale In Targetmonitoring policies
SDC
- Import Scaling Building Blocks to Catalog (This assumes WF designer will be used)
- Add Scale In Building Block to SDC Catalog
- Add any new BB (TBD based on finalized Scale In flow) to the Catalog
- ability to build scaling workflows
SDNC
- ConfigScaleIn
- SDNC will support a new LCM action ConfigScaleIn
- SDNC will need to support accepting a new ConfigScaleIn request from MSO
- SDNC will accept the payload sent from MSO. Included in the request will be the VF Module ID to be removed.
- APPC will send the ConfigScaleOut request to the VNF via REST API
- Pre Action Phase
- Need to decide what tasks we will execute in this phase so that we can write the requirements "How"
- Post Action Phase
- Need to decide what tasks we will execute in this phase so that we can write the requirements "How"
- Distribute_Traffic
- SDNC will accept and process a DistributeTraffic request from MSO via DMaaP
- DistributeTraffic action will be enhanced to specify a VM as the target
- Quiesce_traffic for VNFCs
- SDNC will accept and process a QuiesceTraffic request from MSO via DMaaP
- QuiesceTraffic action will be enhanced to specify a VM as the target
Design Time Requirements:
Run Time Requirements:
SO
- Scale In Workflow
- Support a new Scale In Building Block.
- Support a sending and receiving messages from Policy and VID via DMaaP
- Accept a Closed Loop (Policy) or Open Loop(VID) request to Scale In a module
- Support sending a Scale In Request to the Controller. This request will include the VF-Modules/VM(s) that will be deleted
Scale In Target- Support Pre Action Phase
- Same comment as previous
- Support Post Action Phase
- Same comment as previous
- DistributeTraffic Action. T
- Enhance the DistributeTraffic action at a VM level and send to the Controller. This assumes that the action has been implemented and tested in Casablanca release. The necessary config parameters will be passed with the request to the Controller
- Call QuiesceTraffic (TBD if this action will be use din this workflow)
Scaling Building Blocks
VID
- UI enhancements
- Support new field to specify which VM(s) to remove in the Scale In Request to SO
- Is VID going to call policy to determine which VM to remove or will a user enter the information on the GUI
- Support Common DMaaP interface to send request to SO
Goal: Updates to Manual and Auto Scale Out
APPC
- Pre Action phase for Scale Out
- Post Action Phase for Scale Out
SDNC
- Pre Action phase for Scale Out
- Post Action Phase for Scale Out
SO
- Add pre action phase to Scale Out Workflow
- Add Post action phase to Scale Out Workflow
Goal: Auto VNF Configuration
APPC
- Adopt CDS for use in Auto Configuration
- Change ConfigScaleOut to support Auto Configuration
SDNC
- Adopt CDS for use in Auto Configuration
- Change ConfigScaleOut to support Auto Configuration
SO
- Change APPC/SDNC API usage to adopt Auto Configuration
Goal: Homing and Capacity Check
OOF
- Support a Homing and Capacity Check Function
SO
- Call Homing and Capacity API on OOF
Goal: Controller_Type Lookup
SO
- Utilize new Controller_Lookup Function