S3-Backed-FTP Server

An ftp/sftp server using s3fs to mount an external s3 bucket as ftp/sftp storage.

More info here.

Usage

To run:

1. Replace env.list.example file with a real env.list file with correct variables filled in.

   • Add users to USERS environment variable. These should be listed in the form username:hashedpassword, each separated by a space.
   • Passwords for those users should be hashed. There are several ways to hash a user password. A common way is to execute a command like the following: openssl passwd -crypt {your_password}. Substitute {your_password} with the one you want to hash.
   • You may also use non-hashed passwords if storing passwords in plaintext is fine. To do this, change line echo $u | chpasswd -e => echo $u | chpasswd in the users.sh file (line #24).
   • Specify the S3 buckets were the files (FTP_BUCKET) and configs (CONFIG_BUCKET) will be stored.
   • If you are running this container inside an AWS EC2 Instance with an assigned IAM_ROLE, then specify its name in the IAM_ROLE environment variable.
   • If you do not have an IAM_ROLE attached to your EC2 Instance or wherever you are running this, then you have to specify the AWS credentials that will be used to access S3. These are the AWS_ACCESS_KEY_ID and the AWS_SECRET_KEY_ID keys.

2. If you have changed other files aside the env.list file, then you have to build the docker container using:

   • docker build --rm -t <docker/tag> path/to/dockerfile/folder

   • docker run --rm -p 21-22:21-22 -p 60000-60100:60000-60100 --name <name> --cap-add SYS_ADMIN --device /dev/fuse -v %cd%/vsftpd.key:/etc/ssl/private/vsftpd.key -v %cd%/vsftpd.crt:/etc/ssl/certs/vsftpd.crt -v %cd%/ssh_host_rsa_key:/etc/ssh/ssh_host_rsa_key -v %cd%/ssh_host_dsa_key:/etc/ssh/ssh_host_dsa_key --env-file env.list <docker/tag>

Environment Variables

1. USERS = List of users to add to the ftp/sftp server. Listed in the form username:hashedpassword, each separated by a space.
2. FTP_BUCKET = S3 bucket where ftp/sftp users data will be stored.
3. CONFIG_BUCKET = S3 bucket where the config data (env.list file) will be stored.
4. IAM_ROLE = name of role account linked to EC2 instance the container is running in.

Optional Environment Variables

These two environment variables only need to be set if there is no linked IAM role to the EC2 instance.

1. AWS_ACCESS_KEY_ID = IAM user account access key.
2. AWS_SECRET_ACCESS_KEY = IAM user account secret access key.

Enjoy! "# s3-backed-ftp"