# 4-2-2. How to set up EMETH Node for Ubuntu users

This guide provides a comprehensive, step-by-step procedure for setting up an EMETH Node on a Ubuntu Linux OS.

## ◇ Set up flow

1. Initial Environment Preparation
2. Operation with Node.js
3. Operation with EMETH NODE
4. (Optional) Persistence by Process-Manager

Preparation of initial environment\
Install Ubuntu, MetaMask, and create an account (wallet address) for Emeth Node.

## 1. Initial Environment Preparation <a href="#id-0e4a" id="id-0e4a"></a>

Install Ubuntu, MetaMask, create account (wallet address) for Emeth Node

### **◇** Ubuntu Installation Reference

<https://www.youtube.com/watch?v=wjbbl0TTMeo>

### ◇Guide for how to prepare MATIC

Procure MATIC tokens and put them in MetaMask.

How to buy Polygon MATIC tokens easy way.

<https://www.youtube.com/watch?v=n8TwB79My-I>

## 2. operation with Node.js <a href="#id-2540" id="id-2540"></a>

### (1) Install nvm stable version of Node.js

> *$ curl* [*https://raw.githubusercontent.com/creationix/nvm/master/install.sh*](https://raw.githubusercontent.com/creationix/nvm/master/install.sh) *| bash $ source \~/.profile*\
> \&#xNAN;*$ nvm install v18.17.1*

Check installed node and npm versions

> *$ node -v*\
> \&#xNAN;*v18.17.1*\
> \&#xNAN;*$ npm -v*\
> \&#xNAN;*9.6.7*

### (2) Installing Docker

> *$ sudo apt update*\
> \&#xNAN;*$ sudo mkdir -p /etc/apt/keyrings*\
> \&#xNAN;*$ curl -fsSL* [*https://download.docker.com/linux/ubuntu/gpg*](https://download.docker.com/linux/ubuntu/gpg) *| sudo gpg — dearmor -o /etc/apt/keyrings/docker.gpg*\
> \&#xNAN;*$ echo “deb \[arch=$(dpkg — print-architecture) signed-by=/etc/apt/keyrings/docker.gpg]* [*https://download.docker.com/linux/ubuntu*](https://download.docker.com/linux/ubuntu) *$(lsb\_release -cs) stable” | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null*\
> \&#xNAN;*$ sudo apt update*\
> \&#xNAN;*$ sudo apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin*

Check installed Docker version

> *$ docker -v*\
> \&#xNAN;*Docker version 24.0.6, build ed223bc*

### **(3) Setting Docker Execution Permissions**

> *$ sudo groupadd -f docker*\
> \&#xNAN;*$ sudo usermod -aG docker $USER $ newgrp docker*

## 3. operation with EMETH NODE <a href="#id-8140" id="id-8140"></a>

### **(1) Installation of EMETH Node**

> *$ mkdir emeth-node*\
> \&#xNAN;*$ cd emeth-node*\
> \&#xNAN;*$ wget* [*https://github.com/alt-emeth/emeth-node/releases/download/v0.8.1/emeth-node.zip*](https://github.com/alt-emeth/emeth-node/releases/download/v0.8.1/emeth-node.zip)\
> \&#xNAN;*$ unzip emeth-node*\
> \&#xNAN;*$ rm emeth-node.zip*

### **(2) Editing Configuration Files**

> *$ cp config/emeth-node.json.example config/emeth-node.json*\
> \&#xNAN;*$ vi config/emeth-node.json*

### **(3) Setting items**

config/emeth-code.json:

<figure><img src="https://miro.medium.com/v2/resize:fit:700/1*fCOKbxTvGPukiovPCNN4Bg.png" alt="" height="150" width="700"><figcaption></figcaption></figure>

**Here are the list of items you don’t need to change from “Sample Value”.**\
\&#xNAN;**\*You need to prepare and fill“endpoint” and “privateKey” by yourself.**

> *・cacheServerUrl*\
> [*https://cache.emeth.ai/api/v1/jobs*](https://cache.emeth.ai/api/v1/jobs)
>
> *・storageApiUrl*\
> [*https://storage.emeth.ai/api/v1/*](https://storage.emeth.ai/api/v1/)
>
> *・emethCoreContractAddress: 0x5aF9c255D6C965aAa8DB3e9C82276e59345186C8*
>
> *・emethTokenContractAddress: 0xCB746131b75f30942de7C59a5Be1393Fca5Be05D*

### (4) Starting EMETH Node

> *$ node bundle.js*

If you want to process only one job for testing, the following options are available

> *$ node bundle.js — iterations 1*

## 4.(Optional) Persistence by Process-Manager <a href="#id-9b3b" id="id-9b3b"></a>

### **(1) Install pm2** <a href="#id-2f63" id="id-2f63"></a>

> *$ npm install -g pm2*

### **(2) Run** EMETH **Node persistently**

> *$ pm2 start bundle.js — name emeth-node*

### **(3)** EMETH **Node Process checking**

> *$ pm2 list*

or

> *$ pm2 monit*

### **(4)** EMETH **Node log tracking**

> *$ pm2 logs emeth-node*

## ◇ Inquiries <a href="#aafd" id="aafd"></a>

If you encounter any errors or have any questions, please contact us in the Discord channel.\
Discord: <https://discord.gg/wRAS5PhWUb>


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