Google Compute Engine Persistent Disk CSI Driver

WARNING: Manual deployment of this driver to your GKE cluster is not recommended. Instead users should use GKE to automatically deploy and manage the GCE PD CSI Driver (see GKE Docs).

DISCLAIMER: Manual deployment of the driver to your cluster is not officially supported by Google.

The Google Compute Engine Persistent Disk CSI Driver is a CSI Specification compliant driver used by Container Orchestrators to manage the lifecycle of Google Compute Engine Persistent Disks.

Project Status

Status: GA Latest stable image: registry.k8s.io/cloud-provider-gcp/gcp-compute-persistent-disk-csi-driver:v1.17.2

Test Status

Kubernetes Integration

Driver Version	Kubernetes Version	Test Status
HEAD Latest	HEAD
HEAD stable-master	HEAD (Migration ON)

CSI Compatibility

This plugin is compatible with CSI versions v1.2.0, v1.1.0, and v1.0.0

Kubernetes Version Recommendations

The latest stable of this driver is recommended for the latest stable Kubernetes version. For previous Kubernetes versions, we recommend the following driver versions.

Kubernetes Version	PD CSI Driver Version
HEAD	v1.13.x
1.29	v1.12.x
1.28	v1.12.x
1.27	v1.10.x

The manifest bundle which captures all the driver components (driver pod which includes the containers csi-provisioner, csi-resizer, csi-snapshotter, gce-pd-driver, csi-driver-registrar; csi driver object, rbacs, pod security policies etc) for the lastest stable release can be picked up from the master branch overlays directory.

Known Issues

See Github Issues

Plugin Features

CreateVolume Parameters

Parameter	Values	Default	Description
type	Any PD type (see GCP documentation), eg `pd-ssd` `pd-balanced`	`pd-standard`	Type allows you to choose between standard Persistent Disks or Solid State Drive Persistent Disks
replication-type	`none` OR `regional-pd`	`none`	Replication type allows you to choose between Zonal Persistent Disks or Regional Persistent Disks
disk-encryption-kms-key	Fully qualified resource identifier for the key to use to encrypt new disks.	Empty string.	Encrypt disk using Customer Managed Encryption Key (CMEK). See GKE Docs for details.
labels	`key1=value1,key2=value2`		Labels allow you to assign custom GCE Disk labels.
provisioned-iops-on-create	string (int64 format). Values typically between 10,000 and 120,000		Indicates how many IOPS to provision for the disk. See the Extreme persistent disk documentation for details, including valid ranges for IOPS.
provisioned-throughput-on-create	string (int64 format). Values typically between 1 and 7,124 mb per second		Indicates how much throughput to provision for the disk. See the hyperdisk documentation for details, including valid ranges for throughput.
resource-tags	`<parent_id1>/<tag_key1>/<tag_value1>,<parent_id2>/<tag_key2>/<tag_value2>`		Resource tags allow you to attach user-defined tags to each Compute Disk, Image and Snapshot. See Tags overview, Creating and managing tags.

Topology

This driver supports only one topology key: topology.gke.io/zone that represents availability by zone (e.g. us-central1-c, etc.).

CSI Windows Support

GCE PD driver starts to support CSI Windows with [CSI Proxy] (https://github.com/kubernetes-csi/csi-proxy). It requires csi-proxy.exe to be installed on every Windows node. Please see more details in CSI Windows page (docs/kubernetes/user-guides/windows.md)

Features in Development

Feature	Stage	Min Kubernetes Master Version	Min Kubernetes Nodes Version	Min Driver Version	Deployment Overlay
Snapshots	GA	1.17	Any	v1.0.0	stable-1-21, stable-1-22, stable-1-23, stable-master
Clones	GA	1.18	Any	v1.4.0	stable-1-21, stable-1-22, stable-1-23, stable-master
Resize (Expand)	Beta	1.16	1.16	v0.7.0	stable-1-21, stable-1-22, stable-1-23, stable-master
Windows*	GA	1.19	1.19	v1.1.0	stable-1-21, stable-1-22, stable-1-23, stable-master

* For Windows, it is recommended to use this driver with CSI proxy v0.2.2+. The master version of driver requires disk v1beta2 group, which is only available in CSI proxy v0.2.2+

Future Features

See Github Issues

Driver Deployment

As part of the deployment process, the driver is deployed in a newly created namespace by default. The namespace will be deleted as part of the cleanup process.

Controller-level and node-level deployments will both have priorityClassName set, and the corresponding priority value is close to the maximum possible for user-created PriorityClasses.

Notes on filesystems

As noted in GCP PD documentation, ext4 and xfs are officially supported. btrfs support is experimental:

As of writing, Ubuntu VM images support btrfs, but COS does not.
Early testers have observed CSI driver OOMs when mounting larger (1TiB+) btrfs volumes under default memory constraints. The default constraint, as of writing, is 50MiB.

Further Documentation

Local Development

For releasing new versions of this driver, googlers should consult go/pdcsi-oss-release-process.

Kubernetes

User Guides

Driver Development

License

pwschuurman/gcp-compute-persistent-disk-csi-driver

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