storagepool idea

gistfile1.txt

# StoragePools have nodeaffinity/selectors
# OPEN ISSUE: Does StoragePool also need parameters like ssd, encryption, etc.
type: StoragePool
metadata:
  name: pool1
spec:
  nodeAffinity/Selector:
    zone: us-west1a
status:
  capacity: 
    available: 1TB
----    
type: StoragePool
metadata:
  name: pool2
spec:
  nodeAffinity/Selector:
    zone: us-west1b
status:
  capacity:
    available: 100GB
 ---
        
# StorageClass can be comprised of multiple StoragePools
# OPEN ISSUE: Can a StoragePool be part of multiple StorageClasses?
type: StorageClass
metadata:
  name: class1
parameters:
  type: ssd
storagePools:
- pool1
- pool2
---

# Pods control placement through existing pod placement primitives
type: Pod
metadata:
  name: pod1
spec:
  nodeAffinity/selector:
    zone: us-west1a
  volumes:
    claimName: pvc1
---
# Another example of pod placement strategies
type: Pod
metadata:
  name: pod1
spec:
  # Spread the pods with this label across zones
  podAntiAffinity:
    labelSelector:
      app: my-app
    topologyKey: zone
  volumes:
    claimName: pvc1
---    
type: PVC
metadata:
  name: pvc1
spec:
  storageClass: class1
  capacity:
    request: 50GB
    
---

# This is extendable to templated PVCs like StatefulSets too
type: StatefulSet
metadata:
  name: stateful-app
spec:
  podTemplate:
    # Spread the pods with this label across zones
    podAntiAffinity:
      labelSelector:
        app: my-app
      topologyKey: zone
  pvcTemplate:
  - name: pvc-a
    storageClass: class1
    capacity:
      request: 50GB
      
# If you have different types of pools available on the same node (ie HDD and SSD), make different storageclasses for them
type: StatefulSet
metadata:
  name: stateful-app
spec:
  podTemplate:
    # Spread the pods with this label across zones
    podAntiAffinity:
      labelSelector:
        app: my-app
      topologyKey: zone
  pvcTemplate:
  - name: pvc-a
    storageClass: hdd-class
    capacity:
      request: 50GB
  - name: pvc-b
    storageClass: ssd-class
    capacity:
      request: 50GB