Install and Configure 0G Data Availability (DA) Node

Overview

The 0G Data Availability (DA) node is a critical component of the 0G stack, ensuring that data is accessible and verifiable across the network. This technical guide outlines the installation of the DA server from source on an Ubuntu-based system.

Prerequisites

Ensure your system is up to date and contains the necessary build tools and libraries for compiling Rust-based blockchain infrastructure.

System Updates and Dependencies

Install the required packages, including protobuf-compiler and SSL development libraries:

sudo apt-get update
sudo apt install make clang pkg-config libssl-dev build-essential curl protobuf-compiler -y

Install Rust Toolchain

The DA node requires the Rust compiler. Use the official installer and source the environment variables:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source $HOME/.cargo/env

Installation

Compile the DA node binary and download the necessary cryptographic parameters for the zero-knowledge setup.

Build from Source

cd $HOME
git clone https://github.com/0glabs/0g-da-node.git
cd $HOME/0g-da-node
cargo build --release

Download Trusted Setup Parameters

The DA node requires specific parameters to function. Execute the helper script to retrieve them:

./dev_support/download_params.sh

Configuration

Initialize Configuration File

Create your local configuration file from the provided template:

cp $HOME/0g-da-node/config_example.toml $HOME/0g-da-node/config.toml

BLS Key Generation

On the initial run, the DA node must register signer information with the DA contract. If you do not have an existing BLS private key, generate one using the built-in utility:

cargo run --bin key-gen

Note: Securely backup the output of the key generation. This key is required for signing data availability certificates.

Service Management

Create Systemd Service

To ensure the DA node runs as a persistent background process, create a systemd unit file:

sudo tee /etc/systemd/system/zgda.service > /dev/null <<EOF
[Unit]
Description=0G DA Node
After=network.target

[Service]
User=$USER
WorkingDirectory=$HOME/0g-da-node
ExecStart=$HOME/0g-da-node/target/release/server --config $HOME/0g-da-node/config.toml
Restart=on-failure
RestartSec=10
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

Launch the DA Node

Enable and start the service:

sudo systemctl daemon-reload
sudo systemctl enable zgda
sudo systemctl restart zgda

Monitoring

Verify Node Logs

Monitor the DA node logs to ensure the server is processing requests and communicating with the 0G network:

sudo journalctl -u zgda -f -o cat

Common Service Commands

Action	Command
Check Status	sudo systemctl status zgda
Stop Node	sudo systemctl stop zgda
View Recent Logs	journalctl -u zgda -n 100