78 lines
2.6 KiB
Markdown
78 lines
2.6 KiB
Markdown
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# GCP Persistent Disk CSI Driver
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The GCP Persistent Disk CSI driver allows you to provision volumes for pods with a Kubernetes deployment over Google Cloud Platform. The CSI driver replaces to volume provioning done by the in-tree azure cloud provider which is deprecated.
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To deploy GCP Persistent Disk CSI driver, uncomment the `gcp_pd_csi_enabled` option in `group_vars/all/gcp.yml` and set it to `true`.
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## GCP Persistent Disk Storage Class
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If you want to deploy the GCP Persistent Disk storage class to provision volumes dynamically, you should set `persistent_volumes_enabled` in `group_vars/k8s-cluster/k8s-cluster.yml` to `true`.
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## GCP credentials
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In order for the CSI driver to provision disks, you need to create for it a service account on GCP with the appropriate permissions.
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Follow these steps to configure it:
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```ShellSession
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# This will open a web page for you to authenticate
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gcloud auth login
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export PROJECT=nameofmyproject
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gcloud config set project $PROJECT
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git clone https://github.com/kubernetes-sigs/gcp-compute-persistent-disk-csi-driver $GOPATH/src/sigs.k8s.io/gcp-compute-persistent-disk-csi-driver
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export GCE_PD_SA_NAME=my-gce-pd-csi-sa
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export GCE_PD_SA_DIR=/my/safe/credentials/directory
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./deploy/setup-project.sh
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```
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The above will create a file named `cloud-sa.json` in the specified `GCE_PD_SA_DIR`. This file contains the service account with the appropriate credentials for the CSI driver to perform actions on GCP to request disks for pods.
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You need to provide this file's path through the variable `gcp_pd_csi_sa_cred_file` in `inventory/mycluster/group_vars/all/gcp.yml`
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You can now deploy Kubernetes with Kubespray over GCP.
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## GCP PD CSI Driver test
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To test the dynamic provisioning using GCP PD CSI driver, make sure to have the storage class deployed (through persistent volumes), and apply the following manifest:
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```yml
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---
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kind: PersistentVolumeClaim
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apiVersion: v1
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metadata:
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name: podpvc
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spec:
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accessModes:
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- ReadWriteOnce
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storageClassName: csi-gce-pd
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resources:
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requests:
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storage: 1Gi
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---
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apiVersion: v1
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kind: Pod
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metadata:
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name: web-server
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spec:
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containers:
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- name: web-server
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image: nginx
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volumeMounts:
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- mountPath: /var/lib/www/html
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name: mypvc
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volumes:
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- name: mypvc
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persistentVolumeClaim:
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claimName: podpvc
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readOnly: false
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```
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## GCP PD documentation
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You can find the official GCP Persistent Disk CSI driver installation documentation here: [GCP PD CSI Driver](https://github.com/kubernetes-sigs/gcp-compute-persistent-disk-csi-driver/blob/master/docs/kubernetes/user-guides/driver-install.md
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)
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