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How to Deploy VT Writer on RedHat 8

This guide assumes you have a running RHEL server with access to the Red Hat repositories (repos).

Minimum Server Spec

2 CPU Cores
220GB disk


The repos are typically made available via two methods:
 an active Red Hat subscription – typically used when RHEL runs on-prem, OR
⦁ Red Hat Update Infrastructure (RHUI) – available with cloud providers (e.g. Azure and AWS) to mirror Red Hat-hosted repos and automatically make them available to official RHEL cloud VMs.

Note: VisibleThread Docs requires port 443 and port 22.
VisibleThread Docs requires 'sudo su' permission to install correctly.

Note: Deployments have been tested on RHEL 8.
Deployments have been tested on VMware ESX Vsphere/vcenter, Hyper-V, Azure, AWS



VT API and Writer .rpm has some dependencies (httpd, openssl, java) that are available in the Red Hat repos. They should be automatically installed as part of the VT API and Writer .rpm

 PostgreSQL Install

PostgreSQL Database is mandatory. Although the rpm doesn’t depend on it, PostgreSQL is required. We support PostgreSQL versions 10 - 13 and recommend using a version minimum of 12. Here is an example install of PostgreSQL 12 using the PostgreSQL 12 module:

Install PostgreSQL 12
sudo dnf module enable postgresql:12
sudo dnf 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:

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

Verify service is active:
systemctl status postgresql


Deploying the VT Writer RPM

The VT Writer and API .rpm's  are available to download here:

To verify that the download completed successfully you can check the md5 hash :

c9bdff17db6230c52ad188714a385eed visiblethread-api-0.26-1.x86_64.rpm
5951637ad9327efb91aa992c2119803b visiblethread-readability-3.1.1-1.x86_64.rpm

To install run the following commands:     

yum install -y visiblethread-api-0.26-1.x86_64.rpm
yum install -y visiblethread-readability-3.1.1-1.x86_64.rpm
After installing these packages your VT Writer server is now ready for use !


Details of how to setup and configure the server can be found here: 


Note: In the above document VT Writer is referred to as "VT Readability". This is the official name of the product prior to version 2.6.1

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