Validator Preparation Guide The purpose of this document is to help you to set up a Validator node on a Hyperledger Indy network, as well as to set up a CLI machine for using the indy-cli. The CLI will be used now and in the future to post transactions to networks and retrieve information as a Steward. Table of Contents 1. Introduction Before reading the contents of this document it is highly recommended that you have a good understanding of at least the technical section of the governance framework for the network you are joining. Your Network Administrator will be able to provide you with that document plus the other items needed as mentioned throughout this document. 1.1. High Level Overview Node Operators (or Stewards) operate the Validator nodes of the Hyperledger Indy decentralized identity network. Please see your governance framework document for more information about Node Operators and their role.

GC - Install a VM for an Indy Node - Ubuntu 20.04 Introduction The following steps are one way to adhere to the Indy Node guidelines for installing a Google Cloud(GC) instance server to host an Indy Node. For the hardware requirements applicable for your network, Ask the Network Administrator or refer to the Technical Requirements document included in the Network Governance documents for your network. NOTE: Since GC regularly updates their user interface, this document becomes outdated quickly. The general steps can still be followed with a good chance of success, but please submit a PR with any changes you see or inform the author of the updates (lynn@indicio.tech) to keep this document up to date. Installation To prepare for VM creation, there are a few preliminary steps needed. First you might need to create a project in which you will create your VM. You will then need to set up items needed for Node networking (detailed steps below). You will also need to create a snapshot schedule so that your VM can be backed up automatically (optional, but this is the only method described herein that satisfies the "backup" requirement). From the GCP console (https://console.cloud.google.com/) scroll down in the upper left hamburger menu to the 'Networking' section, select 'VPC Network', then 'VPC Networks' If you haven’t already, you might need to “Enable” the compute engine API.Before you begin, decide on a 'region' in which to run your VM that closely matches the jurisdiction of your company's corporate offices. Record the region selected as it will be used later in these instructions. Create 2 new VPC Networks using the following steps.Click 'CREATE VPC NETWORK' to create a network for your Client connection on your node. Name - your choice (e.g. client-vpc-9702)

Azure - Install a VM for an Indy Node - Ubuntu 20.04 Introduction The following steps are one way to adhere to the Indy Node guidelines for installing an Azure instance server to host an Indy Node. For the hardware requirements applicable for your network, Ask the Network administrator or refer to the Technical Requirements document included in the Network Governance documents for your network. NOTE: Since Azure regularly updates their user interface, this document becomes outdated quickly. The general steps can still be followed with a good chance of success, but please submit a PR with any changes you see or inform the author of the updates (lynn@indicio.tech) to keep this document up to date. Installation Create a new or open an existing “Resource Group” (“Create New” was used for this document.) You can also do this later. From the Azure portal ‘home’ click 'Create a resource'. Type “ubuntu server” in the search field, ‘Enter’, then select 'Ubuntu server 20.04 LTS' Click 'Create' to deploy with Resource Manager.

Physical Hardware - Install a server for an Indy Node - Ubuntu 20.04 Introduction The following steps are one way to adhere to the Indy Node guidelines for installing a physical server to host an Indy Node. For the hardware requirements applicable for your network, ask the Network administrator or refer to the Technical Requirements document included in the Network Governance documents for your network. Installation Before you begin:For most governance frameworks' hardware requirements, you will need 2 NIC's and 2 subnets (one per NIC). Configure these before beginning the install. Hardware requirements might include the following, (or greater, depending on your network governance requirements):8 G RAM 2 CPU cores 250G RAIDed disk space 2 NICs with 2 Public IP addresses (1 per NIC)