I was able to setup GCP SDK with ease and mount a bucket from the SDK default project using GCS-Fuse. However, I can't find any documentation referring to multiple buckets from different projects. My user account has access to multiple GCP projects and some of the projects have buckets that I would like to mount and have simultaneous access to.

From what I've read, you have to switch projects in the SDK in order to mount a bucket from that project which would then disconnect you from the other projects bucket. I'm really hoping that I've misread some part of the documentation and my goal is possible.

  • Hey @Jeff any chance you found an answer to this since it was posted? Commented May 8, 2019 at 16:35
  • @JeffWelling No, unfortunately, I haven't.
    – Jeff
    Commented May 13, 2019 at 23:56
  • 1
    We found this was possible by re-defining the env variable for each mount call, but that's quite ugly, we're still on the lookout for a better solution. Commented May 13, 2019 at 23:58
  • @JeffWelling Is the solution you found the same as in the exisiting answer? If not, could you please post your solution. Thanks. Commented Aug 10, 2020 at 12:21

1 Answer 1


If you have multiple logged accounts or service account credentials (json files) on the same machine, I think you can use a single service account that has enough permissions(storage roles) across all projects.

This is to mount buckets that come from different projects but with a single account.

With this workaround, you don't need to change the GOOGLE_APPLICATION_CREDENTIALS environment variable for every mount command

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