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Example application for file and object storage

This flask application is a demo for listing, creating, viewing, and deleting files from the following storage types:

  • Local storage: either by using container storage or a PersistentVolume (recommended)
  • S3 storage from AWS or other compatible service
    • S3 NooBaa object storage from OpenShift Container Storage

Requirements

This application requires OpenShift Container Storage to be installed and configured in the OCP cluster before deploying since it uses the following storage classes provided by OCS:

For reference, OpenShift Container Storage Operator and Local Storage Operator provide the following storage classes on the OCP cluster:

  • nfs-storage
  • local-volume-class
  • ocs-storagecluster-cephfs
  • ocs-storagecluster-ceph-rbd
  • ocs-storagecluster-ceph-rgw
  • openshift-storage.noobaa.io

Install

There is a kustomization folder that contains all the resources needed to deploy the application in the three variants (ephemeral, pvc, s3, and s3-obc).

If the deployment type is s3, be sure to fill the appropriate details on the following files:

For the s3-obc there is no need to provide the Secret and ConfigMap since they are created automatically by the ObjectBucketClaim resource.

There is also a Makefile that aids in deploying and cleaning up resources,

Deploying via make

$ make deploy [TYPE=<ephemeral|pvc|s3|s3-obc>]

Deploying via oc

$ oc new project image-tool
$ oc kustomize kustomization/overlays/pvc/ | oc apply -f -

Test

Depending on the type of deployment used you can access the web interface in one of the following URLs:

TYPE URL
ephemeral https://image-tool-ephemeral-image-tool.apps.ocp4.example.com/
pvc https://image-tool-pvc-image-tool.apps.ocp4.example.com/
s3 https://image-tool-s3-image-tool.apps.ocp4.example.com/
s3-obc https://image-tool-s3-obc-image-tool.apps.ocp4.example.com/

The web page will tell you which storage type is being used.

Cleanup

Cleanup via make

$ make clean [TYPE=<ephemeral|pvc|s3|s3-obc>]

Cleanup via oc

$ oc project default
$ oc delete project/image-tool