FSx for Lustre Mount Permissions for EC2 User

Question

We're testing the waters with FSx Lustre. I have successfully mounted an FSx Lustre file system on a 20.04 Ubuntu EC2 using:
```
sudo mount -t lustre -o relatime,flock fs-876ac86ac865f978.fsx.ap-southeast-2.amazonaws.com@tcp:/hgd765f4 /fsx
```

However, the default EC2 user, ubuntu, has no rights to the file system. Only root does.

How do I mount the file system in such a way that ubuntu has R/W to it, or do I need to use facl or similar to modify the file system after mounting?

Accepted Answer

Fixed it with setfacl:

```
sudo setfacl -R -m u:ubuntu:rwx /fsx
```

Answer

Hello,

You can grant other users permissions to the FSx for Lustre file system by editing either the ownership or the POSIX permissions of the mount point  (for eg., /fsx).

A user with root privileges can grant other users access to the file system as follows:

1. To change the ownership to a non-root user and group, use the following:

```
$ sudo chown user:group /fsx
```

For example:

```
sudo chown ubuntu:ubuntu /fsx
```

2. To change permissions of the file system to something more permissive, use the following:

```
$ sudo chmod 777 /fsx
```

This would then apply to all EC2 instances that have the file system mounted.

FSx for Lustre Mount Permissions for EC2 User

Relevant content