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NooBaa Operator /

BucketClass CRD

NooBaaBucket CRD represents a class for buckets that defines policies for data placement, namespace, replication policy and more.

Data placement capabilities are built as a multi-layer structure, here are the layers bottom-up:

  • Spread Layer - list of backing-stores, aggregates the storage of multiple stores.
  • Mirroring Layer - list of spread-layers, async-mirroring to all mirrors, with locality optimization (will allocate on the closest region to the source endpoint), mirroring requires at least two backing-stores.
  • Tiering Layer - list of mirroring-layers, push cold data to next tier.

Namespace policy: A namespace bucket-class will define a policy for namespace buckets. Namespace policy will require a type, the type's value can be one of the following: single, multi, cache.

Namespace policy of type single will require the following configuration:

  • Resource - a single namespace-store, defines the read and write target of the namespace bucket.

Namespace policy of type multi will require the following configuration:

  • Read Resources - list of namespace-stores, defines the read targets of the namespace bucket.
  • Write Resource - a single namespace-store, defines the write target of the namespace bucket.

Namespace policy of type cache will require the following configuration:

  • Hub Resource - a single namespace-store, defines the read and write target of the namespace bucket.
  • TTL - defines the TTL of the cached data.

Replication policy: A bucket-class will define a replication policy when an admin would like to replicate objects within noobaa bucket to another noobaa bucket (source/destination buckets can be regular/namespace buckets).

Replication policy will require the content of a JSON file which defines array of rules.

  • Each rule is an object contains rule_id, destination bucket and optional filter object that contains prefix field.
  • When a filter with prefix is defined - only objects keys that match prefix, will be replicated.

Constraints: A backing-store name may appear in more than one bucket-class but may not appear more than once in a single bucket-class. The operator cli currently only supports a single tier placement-policy for a bucket-class. Upon creating regular buckets, the user will first need to create a placement-bucketclass which contains placemant policy. Upon creating namespace buckets, the user will first need to create a namespace-bucketclass which contains namespace policy. A namespace bucket class of type cache must contain both Placement-policy or Namespace-policy. A namespace bucket class of type single/multi must contain Namespace-policy. YAML must be used to create a bucket-class with a placement-policy that has multiple tiers. Placement-policy is case sensitive and should be of value (Mirror|Spread). Namespace-policy is case sensitive.

For more information on using bucket-classes from S3 see S3 Account.

Definitions

Reconcile

  • The operator will verify that bucket-class is valid - i.e. that the backing-stores exist and can be used.
  • Changes to a bucket-class spec will be propagated to buckets that were instantiated from it.
  • Other than that the bucket-class is passive, just waiting there for new buckets to use it.

Read Status

Here is an example of healthy status:

apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  name: noobaa-default-class
  namespace: noobaa
spec:
  ...
status:
  conditions:
  - lastHeartbeatTime: "2019-11-05T13:50:50Z"
    lastTransitionTime: "2019-11-07T07:03:58Z"
    message: noobaa operator completed reconcile - bucket class is ready
    reason: BucketClassPhaseReady
    status: "True"
    type: Available
  - lastHeartbeatTime: "2019-11-05T13:50:50Z"
    lastTransitionTime: "2019-11-07T07:03:58Z"
    message: noobaa operator completed reconcile - bucket class is ready
    reason: BucketClassPhaseReady
    status: "False"
    type: Progressing
  - lastHeartbeatTime: "2019-11-05T13:50:50Z"
    lastTransitionTime: "2019-11-05T13:50:50Z"
    message: noobaa operator completed reconcile - bucket class is ready
    reason: BucketClassPhaseReady
    status: "False"
    type: Degraded
  - lastHeartbeatTime: "2019-11-05T13:50:50Z"
    lastTransitionTime: "2019-11-07T07:03:58Z"
    message: noobaa operator completed reconcile - bucket class is ready
    reason: BucketClassPhaseReady
    status: "True"
    type: Upgradeable
  phase: Ready

Example

Here are some examples of the cli/YAML usage and BucketClass CRs for the different bucket-class configurations:

Single tier, single backing-store, placement Spread:

noobaa -n noobaa bucketclass create placement-bucketclass bc --backingstores bs --placement Spread
apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  labels:
    app: noobaa
  name: bc
  namespace: noobaa
spec:
  placementPolicy:
    tiers:
    - backingStores:
      - bs
      placement: Spread

Single tier, two backing-stores, placement Spread:

noobaa -n noobaa bucketclass create placement-bucketclass bc --backingstores bs1,bs2 --placement Spread
apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  labels:
    app: noobaa
  name: bc
  namespace: noobaa
spec:
  placementPolicy:
    tiers:
    - backingStores:
      - bs1
      - bs2
      placement: Spread

Single tier, two backing-store, placement Mirror:

noobaa -n noobaa bucketclass create placement-bucketclass bc --backingstores bs1,bs2 --placement Mirror
apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  labels:
    app: noobaa
  name: bc
  namespace: noobaa
spec:
  placementPolicy:
    tiers:
    - backingStores:
      - bs1
      - bs2
      placement: Mirror

Two tiers (not yet supported via operator cli), single backing-store per tier, placement Spread in tiers:

apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  labels:
    app: noobaa
  name: bc
  namespace: noobaa
spec:
  placementPolicy:
    tiers:
    - backingStores:
      - bs1
      placement: Spread
    - backingStores:
      - bs2
      placement: Spread

Two tiers (not yet supported via operator cli), two backing-store per tier, placement Spread in first tier and Mirror in second tier:

apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  labels:
    app: noobaa
  name: bc
  namespace: noobaa
spec:
  placementPolicy:
    tiers:
    - backingStores:
      - bs1
      - bs2
      placement: Spread
    - backingStores:
      - bs3
      - bs4
      placement: Mirror

Namespace bucketclass:

noobaa -n noobaa bucketclass create namespace-bucketclass single bc --resource azure-blob-ns
apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  labels:
    app: noobaa
  name: bc
  namespace: noobaa
spec:
  namespacePolicy:
    type: Single
    single: 
      resource: azure-blob-ns

Namespace bucketclass:

noobaa -n noobaa bucketclass create namespace-bucketclass multi bc --write-resource aws-s3-ns --read-resources aws-s3-ns,azure-blob-ns 
apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  labels:
    app: noobaa
  name: bc
  namespace: noobaa
spec:
  namespacePolicy:
    type: Multi
    multi:
      writeResource: aws-s3-ns 
      readResources:
      - aws-s3-ns
      - azure-blob-ns

Namespace bucketclass:

noobaa -n noobaa bucketclass create namespace-bucketclass cache bc --hub-resource ibm-cos-ns --ttl 36000 --backingstores noobaa-default-backing-store
apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  labels:
    app: noobaa
  name: bc
  namespace: noobaa
spec:
  namespacePolicy:
    type: Cache
    cache:
      caching:
        ttl: 36000
      hubResource: ibm-cos-ns 
  placementPolicy:
    tiers:
    - backingStores:
      - noobaa-default-backing-store

Namespace bucketclass with replication to first.bucket:

/path/to/json-file.json is the path to a JSON file which defines the replication policy

noobaa -n noobaa bucketclass create namespace-bucketclass single bc --resource azure-blob-ns --replication-policy=/path/to/json-file.json
apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
  labels:
    app: noobaa
  name: bc
  namespace: noobaa
spec:
  namespacePolicy:
    type: Single
    single: 
      resource: azure-blob-ns
  replicationPolicy: [{ "rule_id": "rule-1", "destination_bucket": "first.bucket", "filter": {"prefix": "ba"}}]