Server Setup in Alibaba Cloud

With an Aspera entitlement, an Aspera server can be installed on an instance in Alibaba Cloud Object Storage Service and run as a self-managed, cloud-based server that enables high-speed transfers with your Alibaba Cloud storage.

Prerequisites:

You have an Alibaba Cloud account.
You have a vault and know your access id and password.
HST Server is installed on a VM instance in Alibaba Cloud.
You can log in to your VM instance with root privileges.
Your instance's Linux Kernel is 2.6.34 or higher. Run the following command to confirm:
```
$ uname -a
```
Your local and cloud firewalls allow FASP-required connections (TCP/22, TCP/33001, UDP/33001).

Login to your instance.
Connect to a Linux instance using SSH and elevate to root privileges:
```
# ssh -i identity_file -p 33001 user@host_ip_address
# sudo su -
```

Set the transfer user's docroot.

# asconfigurator -x "set_user_data;user_name,username;absolute,docroot"

Where docroot has the following syntax:

oss://access_key:secret_key@endpoint/path

Open /opt/aspera/etc/trapd/oss.properties for editing.
1. Disable retrieving the vault location.
  Alibaba Cloud does not support retrieving vault location, so this feature must be disabled. Find the line #aspera.session.check-bucket.transfer=true, uncomment it, and change the value to false. For example:
```
#Whether to check against cross-region transfers
#Default is true
aspera.session.check-bucket.transfer=false
```
2. Disable vault names.
  Using vault names in requests does not work if DNS is not configured. To disable the use of vault names in the request hostname, find the line #s3service.disable-dns-buckets=false, uncomment the line, and change the value to true. For example:
```
#Disable use of bucket name in request hostname.
#Default (and recommended) is false
s3service.disable-dns-buckets=true
```
3. Save your changes and close the file.

Enable the Trapd service.

# /opt/aspera/bin/astrap-config.sh enable

Restart Trapd to activate your changes.
```
# systemctl asperatrapd restart
```