Configure workspaces to use s3 storage class in tekton
The issue is in the way the volumeClaimTemplate is defined. If you run kubectl get storageclass and look in the name column you will note that one has the text (default). In the absence of declaring a the storage class, the default will be chosen. To fix this set the spec.workspaces.volumeClaimTeamplte.spec.storageClassName field.
I am using IBM Cloud (for example), so I would (using the output of kubectl get storageclass) set storageClassName to "ibmc-s3fs-standard-regional":
workspaces: - name: output volumeClaimTemplate: spec: accessModes: - ReadWriteOnce resources: requests: storage: 1Gi storageClassName: "ibmc-s3fs-standard-regional"