Fuel is getting ready for our next major client release, which will upgrade the network from version 0.40.x to 0.41.x. This will be a required upgrade for any node operators. We are targeting February 20 for the testnet upgrade. You can upgrade immediately to the 0.41.6 release and sync with the current network using the latest release. This update includes several improvements, such as database optimizations for some API queries. To fully benefit from these changes, you will need to re-sync the chain from the genesis block. While this isn't required for operation, it is recommended for optimal performance.
To install the Fuel toolchain, you can 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 https://install.fuel.network | shHaving problems? Visit the installation guide or post your question in our forum .
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 or Alchemy
The endpoints should look like the following:
https://sepolia.infura.io/v3/{YOUR_API_KEY}https://eth-sepolia.g.alchemy.com/v2/{YOUR_API_KEY}Note that using other network endpoints will result in the relayer failing to start.
forc node to run a Testnet Node If you wish to still use the
fuel-corebinary directly, you can skip this section and continue with the steps below.
Make sure you have the latest version of fuelup installed or updated . forc node abstracts all the flags and configuration options of the fuel-core binary and is intended for ease of use. To run a testnet node using forc, you can use the following command:
forc node testnetThis command will prompt for two things:
The default configuration is highlighted in green at the top of the command output.
If you want to specify a custom configuration, you can use the --help flag to see the available options. For example:
forc node testnet --help Users of this new plugin may want to review the parameters before running the node. To accommodate this, forc-node includes a dry-run mode, which can be enabled using:
forc-node --dry-run testnetInstead of starting the node, this command will print the exact command that would be run, allowing you to verify the parameters beforehand.
fuel-core binary to run a local node If you wish to still use the fuel-core binary directly, you can follow the steps below.
Generate a new P2P key pairing by running the following command:
fuel-core-keygen new --key-type peering
{
"peer_id":"16Uiu2HAmEtVt2nZjzpXcAH7dkPcFDiL3z7haj6x78Tj659Ri8nrs",
"secret":"b0ab3227974e06d236d265bd1077bb0522d38ead16c4326a5dff2f30edf88496",
"type":"peering"
}
### Do not share or lose this private key! Press any key to complete. ###Make sure you save this somewhere safe so you don't need to generate a new key pair in the future.
To run a local node with persistence, you must have a folder with the following chain configuration files:
For simplicity, clone the repository into the directory of your choice.
When using the --snapshot flag later, you can replace ./your/path/to/chain_config_folder with the ignition-test folder of the repository you just cloned ./chain-configuration/ignition-test/.
First ensure your environments open files limit ulimit is increased, example:
ulimit -S -n 32768Finally to put everything together to start the node, run the following command:
fuel-core run \
--service-name=fuel-sepolia-testnet-node \
--keypair {P2P_PRIVATE_KEY} \
--relayer {ETHEREUM_RPC_ENDPOINT} \
--ip=0.0.0.0 --port=4000 --peering-port=30333 \
--db-path=~/.fuel-sepolia-testnet \
--snapshot ./your/path/to/chain_config_folder \
--utxo-validation --poa-instant false --enable-p2p \
--bootstrap-nodes /dnsaddr/testnet.fuel.network \
--sync-header-batch-size 50 \
--enable-relayer \
--relayer-v2-listening-contracts=0x01855B78C1f8868DE70e84507ec735983bf262dA \
--relayer-da-deploy-height=5827607 \
--relayer-log-page-size=500 \
--sync-block-stream-buffer-size 30For the full description details of each flag above, run:
fuel-core run --helpTo connect to the local node using a browser wallet, import the network address as:
http://0.0.0.0:4000/v1/graphql