Scripts & User config

Elrond provides scripts designed to streamline the process of installing an Elrond node. You will start by getting a copy of the latest version of the scripts from GitHub, and configure it to match your local setup.

Download the Elrond Testnet Scripts

We maintain different version of the scripts used to manage Elrond validators. How get the testnet scripts:

cd ~
git clone https://github.com/ElrondNetwork/elrond-go-scripts

Configure the scripts correctly

The scripts need a few options to be set in order to work correctly.

First and foremost, you need your exact username on the machine. You can find out your current username by using the whoami command, which will print it out:

whoami

Next, we need to edit the variables.cfg file and add your username in the following variables:

  • CUSTOM_HOME, which refers to the folder on the computer in which you will install your nodes
  • CUSTOM_USER, which is the username on the computer under which you will run the installation, upgrade and other processes

Open variables.cfg in the nano editor:

cd ~/elrond-go-scripts/config
nano variables.cfg

Change the variables CUSTOM_HOME and CUSTOM_USER, as indicated in the screenshot. Do not use root Update the ENVIRONMENT value with testnet

scripts

Replace with the returned output of the "whoami" command

Save the file and exit :

  • if you’re editing with nano, press Ctrl+X, then yand then Enter
  • if you’re editing with vi or vim, hold down Shift and press z twice

Ensure user privileges

Your user should be sudo capable, so that it doesn't ask a password every time it executes something. If you already know this to be true, skip ahead. Otherwise, you need to add your username to a special list.

So let's add it to the overrides:

sudo visudo -f /etc/sudoers.d/myOverrides

Now navigate to the end of the file, by pressing Shift + G. Now press o to add a new empty line, and type the following, replacing username with what you got from running the whoami command:

yourusername ALL=(ALL) NOPASSWD:ALL

Conclude by pressing Esc, then save and close the file by holding down Shift while pressing z twice.

Your user should now be able to execute sudo commands.

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