Kubernetes postgres setup on digital ocean

Question

it’s been driving me crazy for about a week now. Searched over the “whole” internet with no luck. used rexray, standard config, digital ocean setup etc.

Cannot make it working on digital ocean with block storage. Would be great if anyone could point me to some tutorial (preferable official kubernetes storage driver).

Here is my config for postgres:

          ... 
          volumeMounts:
            - name: postgres-storage
              mountPath: /var/lib/postgresql/data
      volumes:
        - name: postgres-storage
          persistentVolumeClaim:
            claimName: postgres-pv-claim

---

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: postgres-pv-claim 
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 3Gi

---

apiVersion: v1
kind: PersistentVolume
metadata:
  name: postgres-volume
spec:
  capacity:
    storage: 3Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain

Any help is highly appreciated.

Shahriar · Accepted Answer · 2018-02-04 05:42:07Z

3

Kubernetes does not support Volume plugin for DigitalOcean.

But you can use this using FlexVolume plugin as external storage.

Digital Ocean Flex Plugin
Digital Ocean External Provisioner

See this comment in a PR for DigitalOcean volume support.

If you want to use DigitalOcean block storage, see Kubernetes DigitalOcean Provisioner to setup digitalocean-flexplugin.

edited Feb 4, 2018 at 5:42

answered Feb 4, 2018 at 5:36

Shahriar

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9 Comments

Kiura Over a year ago

Hi again, @aerokite, I carefully followed the instructions on Kubernetes DigitalOcean Provisioner, still have the same error: Normal SuccessfulMountVolume 2m kubelet, node-1 MountVolume.SetUp succeeded for volume "default-token-gxvtl"

Warning  FailedMount 3s    kubelet, node-1 Unable to mount volumes for pod "busy-pod_default(7562c388-0a59-11e8-bdb8-7eb68b307981)": timeout expired waiting for volumes to attach/mount for pod "default"/"busy-pod". list of unattached/unmounted volumes=[vol1]

Shahriar Over a year ago

kubectl get pv ?

Kiura Over a year ago

kubectl get pv postgres-volume 3Gi RWO Retain Released default/postgres-pv-claim

Kiura Over a year ago

this pv was created for postgres, then I tried the example pod, didnt work with either

Hcabnettek Over a year ago

@aerokite Have you guys ever gotten this to work? I have tried for weeks and it never tries to mount. I get a weird error about a 'U' character. I opened an issue and no one responded github.com/kubernetes-incubator/external-storage/issues/761

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