We are always happy to list users who run cStor in production, check out our existing adopters, and their feedbacks.
The new cStor Operators support the following Operations on cStor pools and volumes:
Collection of enhanced Kubernetes Operators for managing OpenEBS cStor Data Engine. At a high-level, cstor operators consist of following components.
An OpenEBS admin/user can use CSPC(CStorPoolCluster) API (YAML) to provision cStor pools in a Kubernetes cluster. As the name suggests, CSPC can be used to create a cluster of cStor pools across Kubernetes nodes. It is the job of cspc-operator to reconcile the CSPC object and provision CStorPoolInstance(s) as specified in the CSPC. A cStor pool is provisioned on node by utilising the disks attached to the node and is represented by CStorPoolInstance(CSPI) custom resource in a Kubernetes cluster. One has freedom to specify the disks that they want to use for pool provisioning.
CSPC API comes with a variety of tunables and features and the API can be viewed for here
Once a CSPC is created, cspc-operator provision CSPI CR and pool-manager deployment on each node where cStor pool should be created. The pool-manager deployment watches for its corresponding CSPI on the node and finally executes commands to perform pool operations e.g pool provisioning.
More info on cStor Pool CRs can be found here.
Note: It is not recommended to modify the CSPI CR and pool-manager in the running cluster unless you know what you are trying to do. CSPC should be the only point of interaction.
Once the CStor pool(s) get provisioned successfully after creating CSPC, admin/user can create PVC to provision csi CStor volumes. When a user creates PVC, CStor CSI driver creates CStorVolumeConfig(CVC) resource, managed and reconciled by the cvc-controller which creates different volume-specific resources for each persistent volume, later managed by their respective controllers, more info can be found here.
The cStor operators work in conjunction with the cStor CSI driver to provide cStor volumes for stateful workloads.
K8S : 1.21+
If you want to raise any issue for cstor-operators please do that at openebs/openebs.
OpenEBS welcomes your feedback and contributions in any form possible.
Please read the community code of conduct here.