Data Availability Client

Prerequiretes

Hardware	Minimum Spesification
CPU	2 Cores
RAM	8 GB
Bandwidth	100 Mbps

Installation

Update & upgrade packages

apt update && apt upgrade -y
apt install git -y

Install docker

sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose docker-compose-plugin -y 

Start and enable Docker service

sudo systemctl start docker
sudo systemctl enable docker

Clone DA Client node repo

git clone https://github.com/0glabs/0g-da-client.git
cd 0g-da-client.git

Build docker image

docker build -t 0g-da-client -f combined.Dockerfile .

Set Environment Variables

Create a file named envfile.env with the following content. Be sure you paste in your private key.

nano envfile.env

# envfile.env
COMBINED_SERVER_CHAIN_RPC=https://evmrpc-testnet.0g.ai
COMBINED_SERVER_PRIVATE_KEY=your-private-key
ENTRANCE_CONTRACT_ADDR=0x857C0A28A8634614BB2C96039Cf4a20AFF709Aa9

COMBINED_SERVER_RECEIPT_POLLING_ROUNDS=180
COMBINED_SERVER_RECEIPT_POLLING_INTERVAL=1s
COMBINED_SERVER_TX_GAS_LIMIT=2000000
COMBINED_SERVER_USE_MEMORY_DB=true
COMBINED_SERVER_KV_DB_PATH=/runtime/
COMBINED_SERVER_TimeToExpire=2592000
DISPERSER_SERVER_GRPC_PORT=51001
BATCHER_DASIGNERS_CONTRACT_ADDRESS=0x0000000000000000000000000000000000001000
BATCHER_FINALIZER_INTERVAL=20s
BATCHER_CONFIRMER_NUM=3
BATCHER_MAX_NUM_RETRIES_PER_BLOB=3
BATCHER_FINALIZED_BLOCK_COUNT=50
BATCHER_BATCH_SIZE_LIMIT=500
BATCHER_ENCODING_INTERVAL=3s
BATCHER_ENCODING_REQUEST_QUEUE_SIZE=1
BATCHER_PULL_INTERVAL=10s
BATCHER_SIGNING_INTERVAL=3s
BATCHER_SIGNED_PULL_INTERVAL=20s
BATCHER_EXPIRATION_POLL_INTERVAL=3600
BATCHER_ENCODER_ADDRESS=DA_ENCODER_SERVER
BATCHER_ENCODING_TIMEOUT=300s
BATCHER_SIGNING_TIMEOUT=60s
BATCHER_CHAIN_READ_TIMEOUT=12s
BATCHER_CHAIN_WRITE_TIMEOUT=13s

Run the docker node

docker run -d --env-file envfile.env --name 0g-da-client -v ./run:/runtime -p 51001:51001 0g-da-client combined