Running a Beta-4 Node

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Running a Beta 4 Node

Icon LinkRunning a local Fuel node connected to Beta-4 using P2P

Icon LinkInstallation

The Fuel toolchain is built on top of the Rust programming language. To install Rust, you can use the rustup tool.

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

To install the Fuel toolchain, you'll use the fuelup-init script. This will install forc, forc-client, forc-fmt, forc-lsp, forc-wallet as well as fuel-core in ~/.fuelup/bin.

curl --proto '=https' --tlsv1.2 -sSf https://install.fuel.network/fuelup-init.sh | sh

👉 Run the following command to install the beta-4 toolchain:

fuelup toolchain install beta-4

👉 Set beta-4 as your default toolchain with the following command:

fuelup default beta-4

For more detailed instructions on installing fuelup, visit the installation guide .

Having problems with this part? Post your question on our forum Icon Link. To help you as efficiently as possible, include the output of this command in your post: fuelup show.

Icon LinkGetting a Sepolia (Ethereum Testnet) API Key

An API key from any RPC provider that supports the Sepolia network will work. Relayers will help listen to events from the Ethereum network. We recommend either Infura Icon Link or Alchemy Icon Link

The endpoints should look like the following

Icon LinkInfura

https://sepolia.infura.io/v3/{YOUR_API_KEY}

Icon LinkAlchemy

https://eth-sepolia.g.alchemy.com/v2/{YOUR_API_KEY}

Note that using other network endpoints will result in the relayer failing to start.

Icon LinkGenerating a P2P Key

Generate a new P2P key pairing by running the following command:

fuel-core-keygen new --key-type peering
{
  "peer_id":"16Uiu2HAm8kCaJaaKTujrSwdBxyCELTY979KYaP9YBkWVLTGTo7Bf",
  "secret":"361b3275a3dd4150ea4c786b8dff7822205331e56ac2e73c32b17cb295978c8c",
  "type":"p2p"
}

Make sure you save this somewhere safe so you don't need to generate a new key pair in the future.

Icon LinkChain Configuration

To run a local node with persistence, you must configure a chainConfig.json file. Here is the specific configuration Icon Link for beta-4:

{
  "chain_name": "Testnet Beta 4",
  "block_gas_limit": 30000000,
  "initial_state": {
    "coins": [
      {
        "owner": "0xa1184d77d0d08a064e03b2bd9f50863e88faddea4693a05ca1ee9b1732ea99b7",
        "amount": "0x1000000000000000",
        "asset_id": "0x0000000000000000000000000000000000000000000000000000000000000000"
      },
      {
        "owner": "0xb5566df884bee4e458151c2fe4082c8af38095cc442c61e0dc83a371d70d88fd",
        "amount": "0x1000000000000000",
        "asset_id": "0x0000000000000000000000000000000000000000000000000000000000000000"
      },
      {
        "owner": "0x9da7247e1d63d30d69f136f0f8654ee8340362c785b50f0a60513c7edbf5bb7c",
        "amount": "0x1000000000000000",
        "asset_id": "0x0000000000000000000000000000000000000000000000000000000000000000"
      },
      {
        "owner": "0x4b2ca966aad1a9d66994731db5138933cf61679107c3cde2a10d9594e47c084e",
        "amount": "0x1000000000000000",
        "asset_id": "0x0000000000000000000000000000000000000000000000000000000000000000"
      },
      {
        "owner": "0x26183fbe7375045250865947695dfc12500dcc43efb9102b4e8c4d3c20009dcb",
        "amount": "0x1000000000000000",
        "asset_id": "0x0000000000000000000000000000000000000000000000000000000000000000"
      },
      {
        "owner": "0x81f3a10b61828580d06cc4c7b0ed8f59b9fb618be856c55d33decd95489a1e23",
        "amount": "0x1000000000000000",
        "asset_id": "0x0000000000000000000000000000000000000000000000000000000000000000"
      },
      {
        "owner": "0x587aa0482482efea0234752d1ad9a9c438d1f34d2859b8bef2d56a432cb68e33",
        "amount": "0x1000000000000000",
        "asset_id": "0x0000000000000000000000000000000000000000000000000000000000000000"
      }
    ]
  },
  "transaction_parameters": {
    "contract_max_size": 16777216,
    "max_inputs": 255,
    "max_outputs": 255,
    "max_witnesses": 255,
    "max_gas_per_tx": 10000000,
    "max_script_length": 1048576,
    "max_script_data_length": 1048576,
    "max_storage_slots": 255,
    "max_predicate_length": 1048576,
    "max_predicate_data_length": 1048576,
    "max_gas_per_predicate": 10000000,
    "gas_price_factor": 92,
    "gas_per_byte": 4,
    "max_message_data_length": 1048576,
    "chain_id": 0
  },
  "gas_costs": {
    "add": 1,
    "addi": 1,
    "aloc": 1,
    "and": 1,
    "andi": 1,
    "bal": 13,
    "bhei": 1,
    "bhsh": 1,
    "burn": 132,
    "cb": 1,
    "cfei": 1,
    "cfsi": 1,
    "croo": 16,
    "div": 1,
    "divi": 1,
    "eck1": 951,
    "ecr1": 3000,
    "ed19": 3000,
    "eq": 1,
    "exp": 1,
    "expi": 1,
    "flag": 1,
    "gm": 1,
    "gt": 1,
    "gtf": 1,
    "ji": 1,
    "jmp": 1,
    "jne": 1,
    "jnei": 1,
    "jnzi": 1,
    "jmpf": 1,
    "jmpb": 1,
    "jnzf": 1,
    "jnzb": 1,
    "jnef": 1,
    "jneb": 1,
    "k256": 11,
    "lb": 1,
    "log": 9,
    "lt": 1,
    "lw": 1,
    "mcpi": 33,
    "mint": 135,
    "mlog": 1,
    "mod": 1,
    "modi": 1,
    "move": 1,
    "movi": 1,
    "mroo": 2,
    "mul": 1,
    "muli": 1,
    "mldv": 1,
    "noop": 1,
    "not": 1,
    "or": 1,
    "ori": 1,
    "ret_contract": 13,
    "rvrt_contract": 13,
    "s256": 2,
    "sb": 1,
    "scwq": 13,
    "sll": 1,
    "slli": 1,
    "srl": 1,
    "srli": 1,
    "srw": 12,
    "sub": 1,
    "subi": 1,
    "sw": 1,
    "sww": 43,
    "swwq": 44,
    "time": 1,
    "tr": 105,
    "tro": 60,
    "wdcm": 1,
    "wqcm": 1,
    "wdop": 1,
    "wqop": 1,
    "wdml": 1,
    "wqml": 1,
    "wddv": 1,
    "wqdv": 2,
    "wdmd": 3,
    "wqmd": 4,
    "wdam": 2,
    "wqam": 3,
    "wdmm": 3,
    "wqmm": 3,
    "xor": 1,
    "xori": 1,
    "call": {
      "base": 144,
      "dep_per_unit": 214
    },
    "ccp": {
      "base": 15,
      "dep_per_unit": 103
    },
    "csiz": {
      "base": 17,
      "dep_per_unit": 790
    },
    "ldc": {
      "base": 15,
      "dep_per_unit": 272
    },
    "logd": {
      "base": 26,
      "dep_per_unit": 64
    },
    "mcl": {
      "base": 1,
      "dep_per_unit": 3333
    },
    "mcli": {
      "base": 1,
      "dep_per_unit": 3333
    },
    "mcp": {
      "base": 1,
      "dep_per_unit": 2000
    },
    "meq": {
      "base": 1,
      "dep_per_unit": 2500
    },
    "retd_contract": {
      "base": 29,
      "dep_per_unit": 62
    },
    "smo": {
      "base": 209,
      "dep_per_unit": 55
    },
    "srwq": {
      "base": 47,
      "dep_per_unit": 5
    }
  },
  "consensus": {
    "PoA": {
      "signing_key": "f65d6448a273b531ee942c133bb91a6f904c7d7f3104cdaf6b9f7f50d3518871"
    }
  }
}

Icon LinkRunning a Local Node

Finally to put everything together to start the node, run the following command:

fuel-core run \
--service-name {ANY_SERVICE_NAME} \
--keypair {P2P_SECRET} \
--relayer {RPC_ENDPOINT} \
--ip 127.0.0.1 --port 4000 --peering_port 30333 \
--db-path  ~/.fuel_beta4 \
--chain ./chainConfig.json \
--utxo-validation --poa-instant false --network beta-4 --enable-p2p \
--min-gas-price 1 --max_block_size 18874368  --max_transmit_size 18874368 \
--bootstrap_nodes /dns4/p2p-beta-4.fuel.network/tcp/30333/p2p/16Uiu2HAm3xjsqASZ68KpaJPkPCMUiMgquhjyDHtxcVxVdFkMgRFf,/dns4/p2p-beta-4.fuel.network/tcp/30334/p2p/16Uiu2HAmJyoJ2HrtPRdBALMT8fs5Q25xVj57gZj5s6G6dzbHypoS \
--sync_max_get_header 100 --sync_max_get_txns 100 \
--relayer-v2-listening-contracts 0x03f2901Db5723639978deBed3aBA66d4EA03aF73 \
--relayer-da-finalization 4 \
--relayer-da-deploy-height 4111672 \
--relayer-log-page-size 2000

For the full description details of each flag above, run:

fuel-core run --help

Icon LinkConnecting to the local node from a browser wallet

To connect to the local node using a browser wallet, import the network address as:

http://127.0.0.1:4000/graphql