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Ethereum Node Setup

  • RAM : 8GB
  • Disk: 160 GB
  • OS: Ubuntu 20.04

To install ETH node run the following commands: 

sudo add-apt-repository -y ppa:ethereum/ethereum
sudo apt-get update
sudo apt-get install ethereum -y

After installing the node run the following command to generate a configuration file. If you want to install test node then add any of the test node flag to the following command after geth

  • --goerli
  • --rinkeby
  • --yolov2
  • --ropsten 
geth --syncmode light --cache=2048 --http --http.api "eth,net,web3,personal" --http.corsdomain '*' --http.addr 0.0.0.0 --http.port 8545 --ws --ws.api "eth,web3" --ws.origins '*' --ws.addr 0.0.0.0 --ws.port 8546 --nousb dumpconfig > config.toml

Now you have to create service file geth.service. Run the following command: 

vim geth.service

Copy and paste the following configurations: 

[Unit]
Description=Geth

[Service]
Type=simple
User=root
Restart=always
WorkingDirectory=/root
ExecStart=/usr/bin/geth --config config.toml

[Install]
WantedBy=default.target

Note: If your server username is not root then don't forget to change the name from the above configurations

Run these following command to active the service that created.

cp geth.service /etc/systemd/system/geth.service
systemctl daemon-reload
systemctl enable geth.service
systemctl start geth

Note: Syncing Node will take times depends on sync mode and network mode. Wait until sync completed

Secure The Ethereum Node

Setting Up Firewall Using UFW

Install UFW

sudo apt-get install ufw

Set Up Default Policies

sudo ufw default deny incoming
sudo ufw default allow outgoing

Allow Ethereum Network Port

We would also enable ethereum network so that our nodes can be able to communicate and sync with the public blockchain network.

The Ethereum network port is 30303

sudo ufw allow 30303

Enable RPC port

sudo ufw allow from <SERVER IP> to any port 8545
sudo ufw allow from <SERVER IP> to any port 8546

Note: If you are using a different a different RPC port then it should be specified

Enable UFW

sudo ufw enable

Allow HTTP

sudo ufw allow http

Allow HTTP

sudo ufw allow ssh