Singularity .sif image not found using local.file prefix

[gensweinb]

What are the steps to reproduce this issue?

1. …create deployment (test.yaml) using local.file prefix for container 'image' (image: local.file/local/home/user1/testapp.sif) as per CRI documentation (Thirdly, aiming HPC users needs, Singularity-CRI makes it possible to leverage pre-pulled SIF images to launch pods.
   To use this feature, specify local.file prefix before full SIF image path on host and Singularity-CRI will do the rest.)
2. …kubectl apply -f test.yaml
3. …

What happens?

… Warning Failed 4s (x2 over 18s) kubelet Failed to pull image “local.file/local/home/user1/testapp.sif”: rpc error: code = Internal desc = could not pull image: could not fetch local SIF info: could not open sif image: open /local/home/user1/testapp.sif: no such file or directory.

What were you expecting to happen?

… deployment to be created using the .sif image (I can run it from the command line on the kubernetes cluster)

Any logs, error output, comments, etc?

(If it’s long, please paste a link to the full output here.)
...

Environment?

Cluster information:
Kubernetes version: v1.19.3
Cloud being used: bare-metal
Installation method: manual
Host OS: ubuntu 18.04
CNI and version:
CRI and version: singularity-cri 1.13

I labelled the nodes using:
kubectl label no runtime=singularity

apiVersion: apps/v1
kind: Deployment
metadata:
name: testapp
spec:
replicas: 2
selector:
matchLabels:
app: testapp
template:
metadata:
labels:
app: testapp
spec:
nodeSelector:
runtime: singularity
containers:

• name: testapp
  image: local.file/local/home/user1/testapp.sif
  ports:
• containerPort: 8080

apiVersion: v1
kind: Service
metadata:
name: testapp
spec:
type: NodePort
ports:

• port: 80
  targetPort: 8080
  selector:
  app: testapp

Failed to pull image “local.file/local/home/user1/testapp.sif”: rpc error: code = Internal desc = could not pull image: could not fetch local SIF info: could not open sif image: open /local/home/user1/testapp.sif: no such file or directory.