PureFTPD

sudo yum update # -yes?
sudo yum groupinstall "Development Tools"
sudo yum install openssl-devel htop
mkdir install
cd install
wget http://download.pureftpd.org/pub/pure-ftpd/releases/pure-ftpd-1.0.41.tar.gz
tar -xvzf pure-ftpd-1.0.41.tar.gz
cd pure-ftpd-*
./configure --with-tls --with-ftpwho --with-puredb --without-pam
make
sudo make install
sudo mkdir -p /etc/pure-ftpd
sudo cp configuration-file/pure-ftpd.conf /etc/pure-ftpd/pure-ftpd.conf
sudo cp configuration-file/pure-config.pl /usr/sbin/pure-config.pl
sudo chmod 755 /usr/sbin/pure-config.pl
# init script from: https://www.howtoforge.com/how-to-compile-pure-ftpd-on-centos-7
sudo chmod 755 /etc/init.d/pure-ftpd


sudo mkdir -p /etc/ssl/private
sudo openssl dhparam -out /etc/ssl/private/pure-ftpd-dhparams.pem 2048
sudo openssl req -x509 -nodes -newkey rsa:2048 -sha256 -keyout \
  /etc/ssl/private/pure-ftpd.pem \
  -out /etc/ssl/private/pure-ftpd.pem
sudo chmod 600 /etc/ssl/private/*.pem



sudo groupadd ftpgroup
sudo useradd -g ftpgroup -d /dev/null -s /etc ftpuser

sudo pure-pw useradd ftpaccount -u ftpuser -f /etc/pureftpd.passwd -d /mnt/s3/ftpaccount
sudo /usr/local/bin/pure-pw mkdb

yum install -y gcc libstdc++-devel gcc-c++ fuse fuse-devel curl-devel libxml2-devel mailcap automake openssl-devel
git clone https://github.com/s3fs-fuse/s3fs-fuse
cd s3fs-fuse/
./autogen.sh
./configure --prefix=/usr --with-openssl
make
sudo make install


# find user id of ftpuser and ftpgroup... e.g. 501 (grep ftpuser /etc/passwd)
sudo su -
echo -e "s3fs#schibsted-ftp-upload\t/mnt/s3\tfuse\tuser,uid=501,gid=501,idmap=user\t0\t0" >> /etc/fstab
echo "schibsted-ftp-upload:AWSACCESSKEY:AWSSECRETACCESSKEY" > /etc/passwd-s3fs
chown :ftpgroup /etc/passwd-s3fs
chmod 640 /etc/passwd-s3fs

mkdir -p /mnt/s3/ftpaccount # where ftpaccount == ftp username
# start the serverrrr
sudo service pure-ftpd start