# Baremetal ## System Requirements | CPU | OS | RAM | DISK | | -------- | ------------------ | ---- | ---- | | 4+ Cores | Ubuntu 22.04.4 LTS | 16GB | 5TB | {% hint style="info" %} The Optimism Sepolia Archive Node has a size of 2.3TB as of 3/10/2025. {% endhint %} {% hint style="info" %} 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. {% endhint %} ## Pre-Requisites #### Update System ```bash sudo apt update -y && sudo apt upgrade -y && sudo apt autoremove -y sudo apt install -y git gcc make --fix-missing ``` #### Install GO {% hint style="warning" %} OP-NODE and OP-GETH specifically require GO v1.22.0.\ OP-NODE requires an L1 and an L1 Beacon. {% endhint %} ```bash # 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 ```bash sudo ufw default deny incoming && sudo ufw default allow outgoing ``` #### Allow SSH ```bash sudo ufw allow 22/tcp ``` #### Allow Connections for OP-NODE & OP-GETH ```bash sudo ufw allow 9222 sudo ufw allow 9545 sudo ufw allow 8545 sudo ufw allow 30303 ``` #### Enable Firewall Rules ```bash sudo ufw enable ``` #### Check Status of Firewall Rules (UFW) ```bash sudo ufw status verbose ``` ## Download and Set up OP-Node & OP-Geth ### Create Directories ```bash mkdir -p /var/lib/optimism/database mkdir -p /var/lib/optimism/configuration mkdir -p /root/chain ``` ### Create JWT Secret ```bash openssl rand -hex 32 > /var/lib/optimism/configuration/jwt.txt ``` ## Set up OP-Node #### Download & Build OP-Node ```bash 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 ```bash 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 ```bash 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 ```bash 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 ```bash systemctl daemon-reload ``` #### Run OP-Node Service ```bash systemctl enable op-node.service systemctl start op-node.service ``` #### Run OP-Geth Service ```bash systemctl enable op-geth.service systemctl start op-geth.service ``` ## Query Node #### Check Logs ```bash # Check OP-Node journalctl -xeu op-node.service -o cat # Check OP-Geth journalctl -xeu op-geth.service -o cat ``` #### Check Sync Status ```bash 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 ```bash 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"} ``` {% embed url="" %} {% embed url="" %} {% embed url="" %} {% embed url="" %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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