Sepolia Arbitrum Node

HTTP request will be available on: http://<YOUR_IP>:8547

WS request will be available on: ws://<YOUR_IP>:8548

RECOMMENDATION: configure please your firewall rules (block all income to port 8547,8548,8647,8648 and use whitelist to access to your rpc, more about that can be found: https://github.com/chaifeng/ufw-docker)

Hardware Requirements

• At least 4 cores, 4 threads
• 16-GB RAM or more
• 1Tb-NVMe SSD
• Internet Connection: A stable, high-speed internet connection and uninterrupted power supply is crucial!

Software Requirements

• Docker: The latest versions of Docker and Docker Compose
• Latest Docker Image: offchainlabs/nitro-node:v2.3.3-6a1c1a7 can be found: https://hub.docker.com/r/offchainlabs/nitro-node/tags
• An Ethereum node synced with the mainnet (can be through third-party services)
• Database snapshot: Here’s the link for Arbitrum: https://snapshot.arbitrum.foundation/index.html
• Ethereum L1 and L2 configurations: L1 RPC URL and L2 chain id or name

Setting Up Arbitrum Database Snapshot:

Let’s start by setting the Arbitrum database snapshot. To access all the snapshots use the link provided before. On the first step of startup, you should utilize the parameter --init.url to initialize the Nitro database. Here’s an example:

--init.url="https://snapshot.arbitrum.foundation/sepolia/nitro-pruned.tar"

If you’re setting up multiple nodes, it’s more efficient to download the snapshot image once and host it locally for all your nodes.

For setting more then one Arbitrum node, as well as to run an Arbitrum One Classic node you should use the required parameter:

--init.url="file:///path/to/snapshot/in/container/snapshot-file.tar due to the presence of classic blocks. However, for running just an Arbitrum One Nitro node this param is optional.

!!! Note that if a database already exists, this setting will be ignored !!!

First Step

• Create new user/ skip if already created user

  adduser administrator
  

  Either way, you will be required to respond to a series of questions:

  -Assign and confirm a password for the new user.

  -Enter any additional information about the new user. This is optional and can be skipped by pressing ENTER if you don’t wish to utilize these fields.

  -Finally, you’ll be asked to confirm that the information you provided was correct. Press Y to continue.

  Your new user is now ready for use and can be logged into with the password that you entered

• Grant privilages

  usermod -aG sudo administrator
  

• Login as new user

  su administrator
  

• Update packages

  sudo apt update && sudo apt upgrade -y
  

• Install dependencies

  sudo apt install curl build-essential git wget jq make gcc nano htop tmux -y
  

• Install docker and docker compose

  curl -fsSL https://get.docker.com -o get-docker.sh
  sudo sh ./get-docker.sh
  docker version && docker compose version
  

• Run Docker as a non-root user

  sudo usermod -aG docker administrator
  

Relogin to your server to take effect from usermod !!!

Second Step

• Clone this repo to your server, navigate to arbitrum-rpc folder and spin up all docker containers

  cd $HOME/ && git clone https://github.com/andrii1890/sarb-rpc.git
  cd sarb-rpc && mkdir .arbitrum && chmod -fR 777 .arbitrum
  

  !!!Cange your L1 RPC URL and L2 BEACON RPC URL (8545 and 5052) in docker-compose.yml

  nano docker-compose.yml
  

  docker compose up -d
  

Third step

• Add alias for docker logs

  echo "#Sepolia Arbitrum Node Logs" >> $HOME/.profile
  echo 'alias sarb_log="docker logs sarb-rpc-one-nitro-node-1 -f"' >> $HOME/.profile
  source $HOME/.profile
  

  now you can simply find logs: sarb_log

You are free to make any changes in docker-compose.yml if you know what you do 😉