Gravity Testnet Sepolia (L2) Node Setup

Instructions about how to run a Gravity Alpha Testnet Sepolia node.

Guide

Prerequisites

  1. A local directory for storing node data

  2. An Ethereum Sepolia RPC endpoint with unlimited rate limit for eth_getLogs

  3. An Ethereum Sepolia beacon chain RPC endpoint

  4. Connection to a Celestia lightnode or public testnet RPC endpoint

Node & DAS Server Setup

  1. Setup the Celestia DAS Server

    docker run -d --rm --name celestia-das-server \
        -p 9876:9876 \
        --entrypoint /bin/celestia-server \
        ghcr.io/celestiaorg/nitro-das-celestia:v0.4.1 \
        --enable-rpc --rpc-addr=0.0.0.0 --rpc-port=9876 \
        --celestia.rpc=<YOUR_CELESTIA_TESTNET_ENDPOINT>\
        --celestia.namespace-id=<TESTNET_NAMESPACE_ID> 
  2. Connect to a Celestia testnet RPC endpoint

Syncing a node from scratch can be extremely time-consuming and resource-intensive. We strongly recommend downloading our latest snapshot:

Running the node

Save the following script as run-gravity-testnet-node.sh, make it executable with chmod +x run-gravity-node.sh, and update the TODO variables:

#!/bin/bash

# Define dependent variables
LOCAL_DIR="TODO"                      # Replace with your local directory path
ETH_SEPOLIA_RPC="TODO"                 # Replace with your Ethereum Sepolia testnet RPC endpoint
ETH_SEPOLIA_BEACON_RPC="TODO"          # Replace with your Ethereum Sepolia beacon RPC endpoint
CELESTIA_DAS_URL="TODO"                # Replace with your Celestia DAS server URL (e.g., http://localhost:9876)

# Run the Docker container
docker run --rm -it \
    --add-host=host.docker.internal:host-gateway \
    -v "$LOCAL_DIR:/home/user/.arbitrum" \
    -p 0.0.0.0:8547:8547 \
    -p 0.0.0.0:8548:8548 \
    ghcr.io/celestiaorg/nitro:v3.3.2 \
    --parent-chain.connection.url="$ETH_SEPOLIA_RPC" \
    --chain.id=13505 \
    --chain.name=conduit-orbit-deployer \
    --http.api=net,web3,eth \
    --http.corsdomain="*" \
    --http.addr=0.0.0.0 \
    --http.vhosts="*" \
    --persistent.db-engine="pebble" \
    --chain.info-json='[
        {
            "chain-id": 13505,
            "parent-chain-id": 11155111,
            "chain-name": "conduit-orbit-deployer",
            "chain-config": {
                "chainId": 13505,
                "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": "0x218a4534C699CE35dc929ff4ca845C05Af9A57a2",
                    "GenesisBlockNum": 0
                }
            },
            "rollup": {
                "bridge": "0x946CF7F3238537e51B017369E523425A18996C23",
                "inbox": "0xe50eBd835F5f17fdEC0A547c37343F080B664357",
                "sequencer-inbox": "0x3eb7334755Fb41dC01400B15C8cC0C64B36E5969",
                "rollup": "0xDE145C4Ef9699D130848167d512dD1D09f173066",
                "validator-utils": "0xb33Dca7b17c72CFC311D68C543cd4178E0d7ce55",
                "validator-wallet-creator": "0x75500812ADC9E51b721BEa31Df322EEc66967DDF",
                "deployed-at": 5979967
            }
        }
    ]' \
    --node.data-availability.enable \
    --node.data-availability.rest-aggregator.enable \
    --node.data-availability.rest-aggregator.urls=https://das-gravity-testnet-sepolia-34ow2embsc.t.conduit.xyz \
    --node.celestia-cfg.enable=true \
    --node.celestia-cfg.url="$CELESTIA_DAS_URL" \
    --execution.forwarding-target=https://rpc-sepolia.gravity.xyz \
    --node.feed.input.url=wss://relay-gravity-testnet-sepolia-34ow2embsc.t.conduit.xyz \
    --parent-chain.blob-client.beacon-url="$ETH_SEPOLIA_BEACON_RPC"

References

For more information, please check out the following guides:

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