curve-operator(v1.0.0) Roadmap

[caoxianfei1]

Curve Operator(v1.0.0) Roadmap(Curvebs)

Feature	Priority	Description
Create cluster	P0	Create a Curve cluster with the ability of the K8s declarative API.
Delete cluster	P0	Delete a Curve cluster with the ability of the K8s declarative API.
Update cluster	P1	Update the cluster specification according to the cluster declaration setting. For example, add or remove ChunkServer services.
Cluster monitor	P1	Deploy visual monitoring system to realize clustering including Prometheus and Grafana services.
Upgrade Cluster	P1	Upgrade version of curve cluster on K8s if user modify the version information spec in the cluster declaration yaml file.
Migrate service	P2	Migrate services in a cluster is accomplished by modifying the cluster declaration file.
Cluster scaling	P2	Scaling cluster based on declarative modify Settings.
Disk discovery	P2	Determine disk automatically based on all disks filter rule in the nodes that has joined the cluster.
Manage more than one cluster	P2	Achieve multi-cluster management according to the creation of different CR resources.
Diagnosis recovery	TODO（hard）	A variety of fault diagnosis and recovery . For example, monitoring disk failure and bad disk handling.

Deployment and application

You will find below services after deployment：

$ kubectl get pod -n curvebs

  curve-etcd-axxx
  curve-etcd-bxxx
  curve-etcd-cxxx
  curve-mds-axxx
  curve-mds-bxxx
  curve-mds-cxxx
  curve-chunkserver-a
  curve-chunkserver-b
  curve-chunkserver-c
  curve-chunkserver-d
  curve-chunkserver-e
  curve-snapshotclone-axxx
  curve-snapshotclone-bxxx
  curve-snapshotclone-cxxx
  curve-csi-controller-xxx
  curve-csi-node-axxx
  curve-csi-node-bxxx
  curve-csi-node-cxxx

Apply the curve storage service

Step 1. Create storage class of curve

allowVolumeExpansion: true
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: curve
parameters:
  user: k8s
  cloneLazy: "true"
provisioner: curve.csi.netease.com
reclaimPolicy: Delete
volumeBindingMode: Immediate

Step 2. Provision dynamic volume by a PersistentVolumeClaim (PVC)

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: curve-pvc
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 20Gi
  storageClassName: curve

Step 3. Create a pod that use above PVC

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: curve-pvc
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: curve