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|Once installed, the OpenStack Manila CSI Driver Operator and ManilaDriver automatically create the required storage classes for all available Manila share types needed for dynamic provisioning.
The Cluster Storage Operator installs a default storage class. This storage class is owned and controlled by the Operator. It cannot be deleted or modified beyond defining annotations and labels. If different behavior is desired, you must define a custom storage class.
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The following sections describe the basic definition for a
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`StorageClass` object and specific examples for each of the supported plugin types.
Config map:: A config map provides a way to inject configuration data into pods. You can reference the data stored in a config map in a volume of type `ConfigMap`. Applications running in a pod can use this data.
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Ephemeral storage::
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Pods and containers can require temporary or transient local storage for their operation. The lifetime of this ephemeral storage does not extend beyond the life of the individual pod, and this ephemeral storage cannot be shared across pods.
Fiber channel:: A networking technology that is used to transfer data among data centers, computer servers, switches and storage.
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FlexVolume:: FlexVolume is an out-of-tree plugin interface that uses an exec-based model to interface with storage drivers. You must install the FlexVolume driver binaries in a pre-defined volume plugin path on each node and in some cases the control plane nodes.
iSCSI:: Internet Small Computer Systems Interface (iSCSI) is an Internet Protocol-based storage networking standard for linking data storage facilities.
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An iSCSI volume allows an existing iSCSI (SCSI over IP) volume to be mounted into your Pod.
NFS:: A Network File System (NFS) that allows remote hosts to mount file systems over a network and interact with those file systems as though they are mounted locally. This enables system administrators to consolidate resources onto centralized servers on the network.
A provider of agnostic persistent storage for OpenShift Container Platform supporting file, block, and object storage, either in-house or in hybrid clouds
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Static provisioning:: A cluster administrator creates a number of PVs. PVs contain the details of storage. PVs exist in the Kubernetes API and are available for consumption.
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Storage:: {product-title} supports many types of storage, both for on-premise and cloud providers. You can manage container storage for persistent and non-persistent data in an {product-title} cluster.
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Storage:: {product-title} supports many types of storage, both for on-premise and cloud providers. You can manage container storage for persistent and non-persistent data in
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a {product-title} cluster.
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an {product-title} cluster.
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Storage class:: A storage class provides a way for administrators to describe the classes of storage they offer. Different classes might map to quality of service levels, backup policies, arbitrary policies determined by the cluster administrators.
VMware vSphere’s Virtual Machine Disk (VMDK) volumes:: Virtual Machine Disk (VMDK) is a file format that describes containers for virtual hard disk drives that is used in virtual machines.
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To create CSI-provisioned persistent volumes that mount to these supported storage assets, {product-title} installs the necessary CSI driver Operator, the CSI driver, and the required storage class by default. For more details about the default namespace of the Operator and driver, see the documentation for the specific CSI Driver Operator.
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[IMPORTANT]
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The AWS EFS and GCP Filestore CSI drivers are not installed by default, and must be installed manually. For instructions on installing the AWS EFS CSI driver, see link:https://access.redhat.com/documentation/en-us/openshift_dedicated/4/html/storage/using-container-storage-interface-csi#osd-persistent-storage-aws-efs-csi[Setting up AWS Elastic File Service CSI Driver Operator]. For instructions on installing the GCP Filestore CSI driver, see link:https://access.redhat.com/documentation/en-us/openshift_container_platform/4.13/html/storage/using-container-storage-interface-csi#persistent-storage-csi-google-cloud-file-overview[Google Compute Platform Filestore CSI Driver Operator].
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The following table describes the CSI drivers that are
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installed with {product-title}
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supported by {product-title}
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and which CSI features they support, such as volume snapshots and resize.
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[IMPORTANT]
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If your CSI driver is not listed in the following table, you must follow the installation instructions provided by your CSI storage vendor to use their supported CSI features.
In addition to the drivers listed in the following table, ROSA functions with CSI drivers from third-party storage vendors. Red Hat does not oversee third-party provisioners or the connected CSI drivers and the vendors fully control source code, deployment, operation, and Kubernetes compatibility. These volume provisioners are considered customer-managed and the respective vendors are responsible for providing support. See the link:https://docs.openshift.com/rosa/rosa_architecture/rosa_policy_service_definition/rosa-policy-responsibility-matrix.html#rosa-policy-responsibilities_rosa-policy-responsibility-matrix[Shared responsibilities for {product-title}] matrix for more information.
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