💻Baremetal
Authors: Godwin
System Requirements
CPU
OS
RAM
DISK
2 -4 Cores (Fastest per core speed)
Debian 12/Ubuntu 22.04
8 - 16 GB
286GB (SSD)
Offchain Labs ⛓️
Pre-Requisites
sudo apt update -y && sudo apt upgrade -y && sudo apt autoremove -y
sudo apt install -y git make wget gcc pkg-config libusb-1.0-0-dev libudev-dev jq gcc g++ curl libssl-dev screen apache2-utils build-essential pkg-configSetting up Firewall
Set explicit default UFW rules
sudo ufw default deny incoming
sudo ufw default allow outgoingAllow SSH
sudo ufw allow 22/tcp
sudo ufw allow 8546
sudo ufw allow 8547Not advised to allow all or unknown IP address to RPC port
Enable Firewall
sudo ufw enableInstall Docker
for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do sudo apt-get remove $pkg; doneAdd Docker Official GPG Key
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.ascAdd the repository to ppt source
echo \
"deb [arch=$(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 updateInstall Docker
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
# Test docker is working
sudo docker run hello-worldInstall go
Download the Go programming language distribution archive, extracts it to the "/usr/local" directory, and then removes the downloaded archive, effectively installing Go version 1.23.5 on the system.
wget https://go.dev/dl/go1.23.5.linux-amd64.tar.gz && \
rm -rf /usr/local/go && \
tar -C /usr/local -xzf go1.23.5.linux-amd64.tar.gz && \
rm go1.23.5.linux-amd64.tar.gzAdd /usr/local/go/bin to the PATH environment variable.
You can do this by adding the following line to your $HOME/.profile or /etc/profile (for a system-wide installation):
export PATH=$PATH:/usr/local/go/bin
go versionBuild Nitro with Docker
git clone --recurse-submodules https://github.com/OffchainLabs/nitro/
cd nitro
docker build -t nitro .Copy Nitro binary from docker to /root/nitro/build/bin
/root/nitro/build/bindocker cp $(docker run -it -d nitro):/usr/local/bin/nitro /root/nitro/build/bin/
/root/nitro/build/bin/nitro -h # testCreate service to run Nitro Node
Create a local directory and replace <some_local_dir> with your path
mkdir -p /root/.gravity/share/nitro/datadirCreate service
sudo nano /etc/systemd/system/gravity.service[Unit]
Description=Gravity Alpha Mainnet Node
After=network.target
[Service]
Type=simple
Restart=on-failure
RestartSec=5
TimeoutSec=900
User=root
Nice=0
LimitNOFILE=200000
ExecStart=/root/nitro/build/bin/nitro \
--parent-chain.connection.url=<ethereum_mainnet_rpc> \
--persistent.chain=/root/.gravity/share/nitro/datadir/ \
--persistent.global-config=/root/.gravity/share/nitro/ \
--chain.id=1625 \
--chain.name=conduit-orbit-deployer \
--chain.info-json='[{\"chain-id\":1625,\"parent-chain-id\":1,\"chain-name\":\"conduit-orbit-deployer\",\"chain-config\":{\"chainId\":1625,\"homesteadBlock\":0,\"daoForkBlock\":null,\"daoForkSupport\":true,\"eip150Block\":0,\"eip150Hash\":\"0x0000000000000000000000000000000000000000000000000000000000000000\",\"eip155Block\":0,\"eip158Block\":0,\"byzantiumBlock\":0,\"constantinopleBlock\":0,\"petersburgBlock\":0,\"istanbulBlock\":0,\"muirGlacierBlock\":0,\"berlinBlock\":0,\"londonBlock\":0,\"clique\":{\"period\":0,\"epoch\":0},\"arbitrum\":{\"EnableArbOS\":true,\"AllowDebugPrecompiles\":false,\"DataAvailabilityCommittee\":true,\"InitialArbOSVersion\":11,\"InitialChainOwner\":\"0xd65776c5F9fA552cB5C9556B3e86bF6c376b233b\",\"GenesisBlockNum\":0}},\"rollup\":{\"bridge\":\"0x7983403dDA368AA7d67145a9b81c5c517F364c42\",\"inbox\":\"0x7AD2a94BefF3294a31894cFb5ba4206957a53c19\",\"sequencer-inbox\":\"0x8D99372612e8cFE7163B1a453831Bc40eAeb3cF3\",\"rollup\":\"0xf993AF239770932A0EDaB88B6A5ba3708Bd58239\",\"validator-utils\":\"0x2b0E04Dc90e3fA58165CB41E2834B44A56E766aF\",\"validator-wallet-creator\":\"0x9CAd81628aB7D8e239F1A5B497313341578c5F71\",\"deployed-at\":19898364}}]' \
--http.api=net,web3,eth \
--http.corsdomain=* \
--http.addr=0.0.0.0 \
--http.port=8547 \
--http.vhosts=* \
--node.data-availability.enable \
--node.data-availability.rest-aggregator.enable \
--node.data-availability.rest-aggregator.urls=https://das-gravity-mainnet-0.t.conduit.xyz \
--execution.forwarding-target=https://rpc.gravity.xyz \
--node.feed.input.url=wss://relay-gravity-mainnet-0.t.conduit.xyz \
--parent-chain.blob-client.beacon-url=<ethereum_beacon_chain_rpc>
KillSignal=SIGHUP
[Install]
WantedBy=multi-user.targetCtrl+X and Y to save changes
systemctl enable gravity.service #enable gravity service at system startup
sudo systemctl daemon-reload #refresh systemd configuration when changes made
sudo systemctl start gravity.service #start gravity
sudo systemctl stop gravity.service #stop gravityjournalctl -f -u gravity.service #follow logs of gravity serviceThe logs should look like below and indicate that your node syncs and is expected to reach chainhead in about a week
INFO [01-28|23:32:36.178] created block l2Block=36,676,753 l2BlockHash=f84024..8ee71c
INFO [01-28|23:32:37.179] created block l2Block=36,676,756 l2BlockHash=1e0d92..5f8afb
INFO [01-28|23:32:38.180] created block l2Block=36,676,760 l2BlockHash=e097e7..079758References
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