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Date of last update: August 19, 2022

Subcommands

This reference describes the syntax of the Hyperledger Besu command line interface (CLI) subcommands.

Attention

This reference contains subcommands that apply to both public and private networks. For private-network-specific subcommands, see the private network subcommands reference.

To start a Besu node using subcommands, run:

besu [OPTIONS] [SUBCOMMAND] [SUBCOMMAND OPTIONS]

If using Bash or Z shell, you can view subcommand suggestions by pressing the Tab key twice.

besu Tab+Tab

blocks

Provides blocks related actions.

import

besu blocks import [--skip-pow-validation-enabled] [--start-block=<LONG>] [--end-block=<LONG>] --from=<block-file>
besu blocks import --skip-pow-validation-enabled --start-block=100 --end-block=300 --from=/home/me/me_project/mainnet.blocks

Imports a block or range of blocks from the specified file into the blockchain database.

You can specify the starting index of the block range to import with --start-block. If omitted, the default start block is 0 (the beginning of the chain).

You can specify the ending index (exclusive) of the block range to import with --end-block. If omitted, all blocks after the start block will be imported.

Including --skip-pow-validation-enabled skips validation of the mixHash when importing blocks.

Note

Use --skip-pow-validation-enabled when performing Ethereum Foundation hive testing.

export

besu blocks export [--start-block=<LONG>] [--end-block=<LONG>] --to=<block-file>
besu --network=goerli --data-path=/home/data/ blocks export --start-block=100 --end-block=300 --to=/home/exportblock.bin

Exports a block or range of blocks from storage to a file in RLP format.

If you omit --start-block, the default start block is 0 (the beginning of the chain), and if you omit --end-block, the default end block is the current chain head.

If you are not running the command against the default network (Mainnet), specify the --network or --genesis-file parameter.

public-key

Provides node public key related actions.

Caution

To get the public key or address of a node, ensure you use the --data-path or --node-private-key-file option with the public-key command. Otherwise, a new node key is silently generated when starting Besu.

export

besu public-key export [--node-private-key-file=<file>] [--to=<key-file>] [--ec-curve=<ec-curve-name>]
besu --data-path=<node data path> public-key export --node-private-key-file=/home/me/me_node/myPrivateKey --ec-curve=secp256k1
besu --data-path=<node data path> public-key export --node-private-key-file=/home/me/me_node/myPrivateKey --to=/home/me/me_project/not_precious_pub_key --ec-curve=secp256k1

Outputs the node public key to standard output or to the file specified by --to=<key-file>. You can output the public key associated with a specific private key file using the --node-private-key-file option. The default elliptic curve used for the key is secp256k1. Use the --ec-curve option to choose between secp256k1 or secp256r1.

export-address

besu public-key export-address [--node-private-key-file=<file>] [--to=<address-file>] [--ec-curve=<ec-curve-name>]
besu --data-path=<node data path> public-key export-address --node-private-key-file=/home/me/me_node/myPrivateKey --ec-curve=secp256k1
besu --data-path=<node data path> public-key export-address --node-private-key-file=/home/me/me_node/myPrivateKey --to=/home/me/me_project/me_node_address --ec-curve=secp256k1

Outputs the node address to standard output or to the file specified by --to=<address-file>. You can output the address associated with a specific private key file using the --node-private-key-file option. The default elliptic curve used for the key is secp256k1. Use the --ec-curve option to choose between secp256k1 or secp256r1.

password

Provides password related actions.

hash

besu password hash --password=<my-password>
besu password hash --password=myPassword123

Generates the hash of a given password. Include the hash in the credentials file for JSON-RPC API authentication.

operator

Provides operator actions.

generate-log-bloom-cache

besu operator generate-log-bloom-cache [--start-block=<BLOCK_NUMBER>] [--end-block=<BLOCK_NUMBER>]
besu --network=goerli --data-path=/project/goerli operator generate-log-bloom-cache --start-block=0 --end-block=100000

Tip

Manually executing generate-log-bloom-cache is not required unless you set the --auto-log-bloom-caching-enabled command line option to false.

Generates cached log bloom indexes for blocks. APIs use the cached indexes for improved log query performance.

Note

Each index file contains 100000 blocks. The last fragment of blocks less that 100000 are not indexed.

To generate cached log bloom indexes while the node is running, use the admin_generateLogBloomCache API.

retesteth

besu retesteth [--data-path=<PATH>] [--rpc-http-host=<HOST>] [--rpc-http-port=<PORT>] [-l=<LOG VERBOSITY LEVEL>] [--host-allowlist=<hostname>[,<hostname>…]… or * or all]
besu retesteth --data-path=/home/me/me_node --rpc-http-port=8590 --host-allowlist=*

Runs a Retesteth-compatible server. Retesteth is a developer tool that can generate and run consensus tests against any Ethereum client running such a server.

The command accepts the following command line options:

validate-config

besu validate-config --config-file <PATH-TO-CONFIG-FILE>
besu validate-config --config-file ../besu-local-nodes/config/besu/besu1.conf

Performs basic syntax validation of the specified TOML configuration file. Checks TOML syntax (for example, valid format and unmatched quotes) and flags unknown options. Doesn’t check data types, and doesn’t check dependencies between options (this is done at Besu startup).