- [Run a node](./../quickstart/run_node.md) {prereq}
[Truffle](https://www.trufflesuite.com/truffle) is a development framework for deploying and managing [Solidity](https://github.com/ethereum/solidity) smart contracts. In this guide, we will learn how to deploy a contract to a running Ethermint network.
## Install dependencies
First, install the latest Truffle version on your machine globally.
```bash
npm install truffle -g
```
You will also need to install Ethermint. Check this [document](./../quickstart/installation.md) for the full instructions.
## Create Truffle Project
In this step we will create a simple counter contract. Feel free to skip this step if you already have your own compiled contract.
Create a new directory to host the contracts and initialize it
```bash
mkdir ethermint-truffle
cd ethermint-truffle
```
Initialize the Truffle suite with:
```bash
truffle init
```
Create `contracts/Counter.sol` containing the following contract:
```javascript
pragma solidity ^0.5.11;
contract Counter {
uint256 counter = 0;
function add() public {
counter++;
}
function subtract() public {
counter--;
}
function getCounter() public view returns (uint256) {
return counter;
}
}
```
Compile the contract using the `compile` command:
```bash
truffle compile
```
Create `test/counter_test.js` containing the following tests in Javascript using [Mocha](https://mochajs.org/):
```javascript
const Counter = artifacts.require("Counter")
contract('Counter', accounts => {
const from = accounts[0]
let counter
before(async() => {
counter = await Counter.new()
})
it('should add', async() => {
await counter.add()
let count = await counter.getCounter()
assert(count == 1, `count was ${count}`)
})
})
```
## Truffle configuration
Open `truffle-config.js` and uncomment the `development` section in `networks`:
```javascript
development: {
host: "127.0.0.1", // Localhost (default: none)
port: 8545, // Standard Ethereum port (default: none)
network_id: "*", // Any network (default: none)
},
```
This will allow your contract to connect to your Ethermint local node.
## Start Node and REST server
Start your local node using the following command on the Terminal
```bash
# on the ~/ethermint/ directory
init.sh
```
::: tip
For further information on how to run a node, please refer to [this](./../quickstart/run_node.md) quickstart document.
:::
In another Terminal wintdow/tab, start the [REST and JSON-RPC server](./../quickstart/clients.md#rest-and-tendermint-rpc.md):
Back in the Truffle terminal, migrate the contract using
```bash
truffle migrate --network development
```
You should see incoming deployment logs in the Ethermint daemon Terminal tab for each transaction (one to deploy `Migrations.sol` and the oether to deploy `Counter.sol`).
