No files visible after mounting on Google Cloud Run

[TrieBr]

I'm following the tutorial here:

https://cloud.google.com/run/docs/tutorials/network-filesystems-fuse

I deployed my docker image to cloud run, and I can see in the logs that the filesystem is mounted successfully, but when I ls -l /mnt/my-bucket no files are enumerated. Similarly my application running in the container throws a "File not Found" error when I try to access a file that exists on the bucket.

Here is my gcfuse_fun.sh. Both the ls commands show 0 files yet my buckets both have files. I can see in the logs messages like the following:

"File system has been successfully mounted."

I confirmed that my service account has access to the buckets (uniform access).

#!/usr/bin/env bash
# Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# [START cloudrun_fuse_script]
#!/usr/bin/env bash
set -eo pipefail

# Create mount directory for service
mkdir -p $MNT_DIR_REPO
mkdir -p $MNT_DIR_ARTIFACTS

echo "Mounting GCS Fuse."
gcsfuse --debug_gcs --debug_fuse $BUCKET_REPO $MNT_DIR_REPO 
echo "Mounting completed."

echo "Mounting GCS Fuse."
gcsfuse --debug_gcs --debug_fuse $BUCKET_ARTIFACTS $MNT_DIR_ARTIFACTS 
echo "Mounting completed."

echo "Enumerating directories."
ls -l $MNT_DIR_REPO
ls -l $MNT_DIR_ARTIFACTS
# Run the web service on container startup. Here we use the gunicorn
# webserver, with one worker process and 8 threads.
# For environments with multiple CPU cores, increase the number of workers
# to be equal to the cores available.
# Timeout is set to 0 to disable the timeouts of the workers to allow Cloud Run to handle instance scaling.
exec dotnet Server.dll --urls http://0.0.0.0:80 &

# Exit immediately when one of the background processes terminate.
wait -n
# [END cloudrun_fuse_script]

[ashmeenkaur]

Hi @TrieBr,

We've seen this behaviour commonly occur when --implicit-dir flag is not used in the mount command. Please check the documentation here and evaluate if you need to add this flag.

Incase implicit-dir flag doesn't work, can you try debugging with the foreground flag as mentioned here. Please share the logs to help us debug the issue.

Also, just wanted to confirm that you're using --execution-environment gen2 flag with gcloud run deploy command?

Thanks,
Ashmeen

[TrieBr]

--implicit-dir did the trick! Thanks for responding!