💻Baremetal

Author: [ jLeopoldA ]

System Requirements

CPU	OS	RAM	DISK
4+ Cores	Ubuntu 22.04.4 LTS	16GB	5TB

The Optimism Sepolia Archive Node has a size of 2.3TB as of 3/10/2025.

Subgraphs using callHandlers requires the RPC client to support the Parity Tracing API. With Optimism sepolia we observe that erigon supports the parity tracing API, while geth does not. This guide shows how to set up a geth client.

Pre-Requisites

Update System

sudo apt update -y && sudo apt upgrade -y && sudo apt autoremove -y
sudo apt install -y git gcc make --fix-missing

Install GO

OP-NODE and OP-GETH specifically require GO v1.22.0. OP-NODE requires an L1 and an L1 Beacon.

# Remove previous installation of GO
rm -rf /usr/local/go # For GO installations locacated within /usr/local/go
rm -rf /usr/local/bin/go # For GO installations located within /usr/local/bin/go

# Download GO
wget https://go.dev/dl/go1.22.0.linux-amd64.tar.gz

# Extract and place within /usr/local
tar -xzf go1.22.0.linux-amd64.tar.gz -C /usr/local && rm go1.22.0.linux-amd64.tar.gz
echo 'export PATH=$PATH:/usr/local/go/bin' >> ~/.bashrc
source ~/.bashrc

Firewall Configuration

Set Explicit Firewall Configuration

sudo ufw default deny incoming && sudo ufw default allow outgoing

Allow SSH

sudo ufw allow 22/tcp

Allow Connections for OP-NODE & OP-GETH

sudo ufw allow 9222
sudo ufw allow 9545
sudo ufw allow 8545
sudo ufw allow 30303

Enable Firewall Rules

sudo ufw enable

Check Status of Firewall Rules (UFW)

sudo ufw status verbose

Download and Set up OP-Node & OP-Geth

Create Directories

mkdir -p /var/lib/optimism/database
mkdir -p /var/lib/optimism/configuration
mkdir -p /root/chain

Create JWT Secret

openssl rand -hex 32 > /var/lib/optimism/configuration/jwt.txt

Set up OP-Node

Download & Build OP-Node

cd /root/chain

# Clone Optimism Repo
git clone https://github.com/ethereum-optimism/optimism.git
cd optimism

# Check out Latest Git version
git checkout v1.10.0

# Build OP-Node
make op-node

Set up OP-Geth

cd /root/chain

# Clone OP-Geth repo
git clone https://github.com/ethereum-optimism/op-geth.git
cd op-geth

# Check out latest Git version
git checkout v1.101500.1

# Build OP-Geth
make geth

Create System Services

Create Service for OP-Node

echo "[Unit]
Description=op-node
After=network.target
StartLimitIntervalSec=200
StartLimitBurst=5

[Service]
Type=simple
Restart=on-failure
RestartSec=5
TimeoutSec=900
User=root
Nice=0
LimitNOFILE=200000
WorkingDirectory=/root/chain/optimism/
ExecStart=/root/chain/optimism/op-node/bin/op-node \
	--l1={L1_URL_HERE} \
	--l1.rpckind=any \
	--l1.beacon={L1_BEACON_URL_HERE} \
	--l2=ws://localhost:8551 \
	--l2.jwt-secret=/var/lib/optimism/configuration/jwt.txt \
	--network=op-sepolia \
	--syncmode=execution-layer
KillSignnal=SIGTERM
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=multi-user.target" > 

Create Service for OP-Geth

echo "[Unit]
Description=op-geth
After=network.target

[Service]
Restart=on-failure
RestartSec=5
TimeoutSec=900
User=root
Nice=0
LimitNOFILE=200000
WorkingDirectory=/root/chain/op-geth
ExecStart=/root/chain/op-geth/build/bin/geth \
    --http --http.port=8545 --http.addr=localhost \
    --authrpc.addr=localhost \
    --authrpc.jwtsecret=/var/lib/optimism/configuration/jwt.txt \
    --verbosity=3 \
    --rollup.sequencerhttp=https://sepolia-sequencer.optimism.io/ \
    --op-network=op-sepolia \
    --datadir=/var/lib/optimism/database \
    --syncmode=full --gcmode=archive
KillSignal=SIGTERM
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=multi-user.target" > /etc/systemd/system/op-geth.service

Run System Services

Reload System Services

systemctl daemon-reload

Run OP-Node Service

systemctl enable op-node.service 
systemctl start op-node.service

Run OP-Geth Service

systemctl enable op-geth.service
systemctl start op-geth.service

Query Node

Check Logs

# Check OP-Node
journalctl -xeu op-node.service -o cat

# Check OP-Geth
journalctl -xeu op-geth.service -o cat

Check Sync Status

curl -H "Content-Type: application/json" \
-X POST --data '{"jsonrpc":"2.0", "method":"eth_syncing", "params":[], "id":1}' \
http://localhost:8545

# If node is done syncing - the response should resemble the below.
{"jsonrpc":"2.0","id":1,"result":false}

Check Block Number

curl -H "Content-Type: application/json" \
-X POST --data '{"jsonrpc":"2.0", "method":"eth_blockNumber", "params":[], "id":1}' \
http://localhost:8545

# Response should resemble the below.
{"jsonrpc":"2.0","id":1,"result":"0x17c07de"}

Optimism DocumentationOptimism Documentation

Optimism DocumentationOptimism Documentation

GitHub - ethereum-optimism/optimism: Optimism is Ethereum, scaled.GitHub

GitHub - ethereum-optimism/op-gethGitHub