mirror of https://github.com/hyperledger/besu
An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://wiki.hyperledger.org/display/besu
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48 lines
1.8 KiB
48 lines
1.8 KiB
# Using a Configuration File
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To specify command line options in a file, use a TOML configuration file.
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The configuration file can be saved and reused across node startups. To specify the configuration file,
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use the [`--config` option](../Reference/Pantheon-CLI-Syntax.md#config).
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To override an option specified in the configuration file, specify the same option on the command line.
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When an option is specified in both places, Pantheon is started with the command line value.
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## TOML Specification
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The configuration file must be a valid TOML file and is composed of key/value pairs. Each key is the
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same as the corresponding command line option name without the leading dashes (`--`).
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Values must be be specified according to TOML specifications for string, numbers, arrays, and booleans.
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Specific differences between the command line and the TOML file format are:
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* Comma-separated lists on the command line are string arrays in the TOML file
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* File paths, hexadecimal numbers, URLs, and <host:port> values must be enclosed in quotes.
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!!!tip
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The [command line reference](../Reference/Pantheon-CLI-Syntax.md) includes configuration file examples for each option.
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!!!example "Example TOML configuration file"
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```toml
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# Valid TOML config file
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datadir="~/pantheondata" # Path
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# Network
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bootnodes=["enode://001@123:4567", "enode://002@123:4567", "enode://003@123:4567"]
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p2p-listen="1.2.3.4:1234" # IP:port
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max-peers=42
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rpc-listen="5.6.7.8:5678" # IP:port
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ws-listen="9.10.11.12:9101" # IP:port
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# Chain
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genesis="~/genesis.json" # Path to the custom genesis file
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# Mining
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miner-enabled=true
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miner-coinbase="0xfe3b557e8fb62b89f4916b721be55ceb828dbd73"
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```
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!!!example "Starting Pantheon with a Configuration File"
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```bash
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pantheon --config=/home/me/me_node/config.toml
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```
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