How can I mount an S3 volume with proper permissions using FUSE

Question

I have an Amazon S3 bucket (let's call it static.example.com) that I need to mount on an EC2 instance (Ubuntu 12.04.2). I've installed s3fs. I'm able to mount the volume, but I can't write to the bucket. I have tried:

sudo s3fs static.example.com -o use_cache=/tmp,allow_other,uid=33,gid=33 /mnt/static.example.com

I can then cd /mnt and ls -la to see:

drwxr-xr-x  5 root     root      4096 Mar 28 18:03 .
drwxr-xr-x 25 root     root      4096 Feb 19 19:22 ..
lrwxrwxrwx  1 root     root         7 Feb 21 19:19 httpd -> /httpd/
drwx------  2 root     root     16384 Oct  9  2012 lost+found
drwxr-xr-x  1 www-data www-data     0 Jan  1  1970 static.example.com

This all looks good, but when I cd static.example.com and mkdir test, I get:

mkdir: cannot create directory `test': Permission denied

The only way I can actually create a directory or touch a file is to force it with sudo. This is not a viable option, however, because I want to write files to the bucket from Apache. My Apache server runs as user:group www-data. Running mount yields:

s3fs on /mnt/static.example.com type fuse.s3fs (rw,nosuid,nodev,allow_other)

How can I mount this bucket in a manner that will allow me to write to the bucket?

Answer 1

I'm the lead developer and maintainer of Open source project RioFS: a userspace filesystem to mount Amazon S3 buckets.

Our project is an alternative to “s3fs” project, main advantages comparing to “s3fs” are: simplicity, the speed of operations and bugs-free code. Currently the project is in the “beta” state, but it's been running on several high-loaded fileservers for quite some time.

We are seeking for more people to join our project and help with the testing. From our side we offer quick bugs fix and will listen to your requests to add new features.

Regarding your issue:

if'd you use RioFS, you could mount a bucket and have a write access to it using the following command (assuming you have installed RioFS and have exported AWSACCESSKEYID and AWSSECRETACCESSKEY environment variables):

riofs  -o allow_other http://s3.amazonaws.com bucket_name /mnt/static.example.com

(please refer to project description for command line arguments)

Please note that the project is still in the development, there are could be still a number of bugs left.

If you find that something doesn't work as expected: please fill a issue report on the project's GitHub page.

Hope it helps and we are looking forward to seeing you joined our community !

Answer 2

This works for me:

sudo s3fs bucketname /mnt/folder -o allow_other,nosuid,use_cache=/mnt/foldercache

If you need to debug, just add ,f2 -f -d:

sudo s3fs bucketname /mnt/folder -o allow_other,nosuid,use_cache=/mnt/foldercache,f2 -f -d