Note: VT Docs requires port 443 and port 22 open on the Amazon Linux 2 Server

Download the VT Docs rpm file to the AWS Instance (alternatively you can download the file at https://visiblethread.s3.amazonaws.com/public/download/visiblethread-docs-4.02-1.x86_64.rpm and then use an FTP/SCP client to transfer it to your instance):
curl -O https://visiblethread.s3.amazonaws.com/public/download/visiblethread-docs-4.02-1.x86_64.rpm

(MD5 Hash: 4cdde714cc77794a2fdcaa6e8f2cb9fb)

Install Postgresql 12

VT Docs rpm does not have a dependency on PostgreSQL. However, VT Docs does require PostgreSQL to function correctly. We support PostgreSQL version 10 - 13 but recommend using a minimum version of PostgreSQL 12. The below instructions are how to install PostgreSQL 12 prior to the VT Docs install.

Enable the Postgresql 12 repository and install the Postgresql packages:

sudo amazon-linux-extras enable postgresql12
sudo yum install -y postgresql-server postgresql-contrib

Enter Postgresql bash shell and initialize the DB:
sudo su - postgres
/usr/bin/postgresql-setup --initdb

Exit the Postgresql bash shell:
exit

Enable and start Postgresl service:
sudo systemctl enable --now postgresql

Verify service is active:
systemctl status postgresql

Install VT Docs rpm:
sudo yum install -y visiblethread-docs-4.02-1.x86_64.rpm

https://support.visiblethread.com/hc/en-us/articles/214225446-Deploying-VisibleThread-On-Premise-behind-your-corporate-firewall#upload-license