Support scaling Kubernetes worker nodes with Mgmt driver

Registered by Yoshito Ito on 2020-09-15

In this spec, the scaling operation is supported after deploying a Kubernetes
cluster with MgmtDriver as VNF Lifecycle Management Interface in ETSI
NFV-SOL003 v2.6.1 [1]. When scaling-out/in a worker node, not only the default
scale operation but also the "scale_start" or "scale_end" operation of VNF
Lifecycle Interface in ETSI NFV-SOL001 v2.6.1 [2] is needed to join/remove a
worker node.

When adding a new worker node, deploying the worker node VM, installation of
Kubernetes related softwares, and applying the required configuration to join
the cluster. Also, when removing a worker node from the cluster, the
evacuation of Pod may be required not to interrupt the existing applications.

[1] https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/003/02.06.01_60/gs_NFV-SOL003v020601p.pdf
[2] https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/001/02.06.01_60/gs_NFV-SOL001v020601p.pdf

Blueprint information

Status:
Not started
Approver:
None
Priority:
Undefined
Drafter:
Yoshito Ito
Direction:
Needs approval
Assignee:
Yoshito Ito
Definition:
New
Series goal:
Proposed for wallaby
Implementation:
Unknown
Milestone target:
milestone icon wallaby-2

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