GKE Using gcePersistentDisk

2
votes

I am trying trying to use a persistent disk from GCE on a GKE project.

Here are the steps I used:

gcloud compute disks create --size 50GB XXX

And here is the response:

WARNING: You have selected a disk size of under [200GB]. This may result in poor I/O performance. For more information, see: https://developers.google.com/compute/docs/disks#performance. Created [https://www.googleapis.com/compute/v1/projects/XXX/zones/us-central1-a/disks/DISKNAME]. NAME ZONE SIZE_GB TYPE STATUS DISKNAME us-central1-a 50 pd-standard READY

New disks are unformatted. You must format and mount a disk before it can be used. You can find instructions on how to do this at:

https://cloud.google.com/compute/docs/disks/add-persistent-disk#formatting

Here is a sniped of my deployment file:

volumeMounts: - mountPath: /data/db name: GKEDISK - mountPath: /data/configdb name: GKEDISK restartPolicy: Always volumes: - name: GKEDISK gcePersistentDisk: pdName: DISKNAME

fsType: ext4

Questions:

1) Do I need to format the disk myself or will GKE do this for me based on the fsType I selected?

2) After I create the disk, I can see it on gcloud, but kubectl get persistentvolumes returns "No Resources Found". Are there any extra steps that need to be execute to allow for GKE to see the disk created on GCE?

1
kubernetesgoogle-kubernetes-engine

1 Answers

1
votes

If you go the manual route, you need to both create the disk in gcloud AND create PV in kubernetes.

Although, why not make use of the flexibility kube gives you with this cloud provider and stick with dynamic PV provisioning ? That way you just create a PVC and the volume/pv is created for you "magically".