feat: apply one or more resources against a group of nodes

[AmitKumarDas]

ProblemStatement: As a SRE admin, I want to apply resource(s) of a given Kind against a group of nodes based on node selector / labels. For example, I want to run a Pod each on Nodes N1, N2 & N3.

[AmitKumarDas]

Draft Design

kind: Recipe
spec:
  tasks:
  - applyNodeGroup:
    nodeSelector:
      key: value
    state:
      kind: Pod
      metadata:
        name:
        namespace:
      spec:

NOTE

• Considering running a Pod across a group of Nodes
  • When a new node gets added a new Pod should run on that Node
  • When an existing node is removed from the label selector group, corresponding Pod should be deleted
  • When no node matches the label selector group, no Pods should be created
• Actions createNodeGroup & deleteNodeGroup may need to be implemented separately from applyNodeGroup action