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An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://wiki.hyperledger.org/display/besu
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133 lines
4.6 KiB
133 lines
4.6 KiB
description: Starting Pantheon
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# Starting Pantheon
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Pantheon nodes can be used for varying purposes as described in the [Overview](../index.md).
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Nodes can connect to the Ethereum mainnet, public testnets such as Ropsten, or private networks.
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## Prerequisites
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[Pantheon Installed](../Installation/Overview.md)
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## Local Block Data
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When connecting to a network other than the network previously connected to, you must either delete the local block data
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or use the [`--data-path`](../Reference/Pantheon-CLI-Syntax.md#data-path) option to specify a different data directory.
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To delete the local block data, delete the `database` directory in the `pantheon/build/distribution/pantheon-<version>` directory.
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## Genesis Configuration
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Pantheon specifies the genesis configuration, and sets the network ID and bootnodes when connecting
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to [Mainnet](#run-a-node-on-ethereum-mainnet), [Goerli](#run-a-node-on-goerli-testnet), [Rinkeby](#run-a-node-on-rinkeby-testnet), and [Ropsten](#run-a-node-on-ropsten-testnet).
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When [`--network=dev`](../Reference/Pantheon-CLI-Syntax.md#network) is specified, Pantheon uses the
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development mode genesis configuration with a fixed low difficulty.
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A node started with [`--network=dev`](../Reference/Pantheon-CLI-Syntax.md#network) has an empty bootnodes list by default.
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The genesis files defining the genesis configurations are in the [Pantheon source files](https://github.com/PegaSysEng/pantheon/tree/master/config/src/main/resources).
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To define a genesis configuration, create a genesis file (for example, `genesis.json`) and specify the file
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using the [`--genesis-file`](../Reference/Pantheon-CLI-Syntax.md#genesis-file) option.
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## Confirm Node is Running
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If you have started Pantheon with the [`--rpc-http-enabled`](../Reference/Pantheon-CLI-Syntax.md#rpc-http-enabled) option, use [cURL](https://curl.haxx.se/) to
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call [JSON-RPC API methods](../Reference/Pantheon-API-Methods.md) to confirm the node is running.
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!!!example
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* `eth_chainId` returns the chain ID of the network.
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```bash
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curl -X POST --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}' localhost:8545
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```
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* `eth_syncing` returns the starting, current, and highest block.
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```bash
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curl -X POST --data '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}' localhost:8545
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```
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For example, after connecting to mainnet `eth_syncing` will return something similar to:
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```json
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{
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"jsonrpc" : "2.0",
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"id" : 1,
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"result" : {
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"startingBlock" : "0x0",
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"currentBlock" : "0x2d0",
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"highestBlock" : "0x66c0"
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}
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}
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```
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## Run a Node for Testing
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To run a node that mines blocks at a rate suitable for testing purposes:
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```bash
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pantheon --network=dev --miner-enabled --miner-coinbase=0xfe3b557e8fb62b89f4916b721be55ceb828dbd73 --rpc-http-cors-origins="all" --host-whitelist=* --rpc-ws-enabled --rpc-http-enabled --data-path=/tmp/tmpDatdir
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```
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Alternatively, use the following [configuration file](../Configuring-Pantheon/Using-Configuration-File.md)
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on the command line to start a node with the same options as above:
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```toml
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network="dev"
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miner-enabled=true
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miner-coinbase="0xfe3b557e8fb62b89f4916b721be55ceb828dbd73"
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rpc-cors-origins=["all"]
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host-whitelist=["*"]
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rpc-ws-enabled=true
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rpc-http-enabled=true
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data-path="/tmp/tmpdata-path"
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```
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## Run a Node on Ropsten Testnet
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To run a node on Ropsten:
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```bash
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pantheon --network=ropsten
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```
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To run a node on Ropsten with the HTTP JSON-RPC service enabled and allow Remix to access the node:
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```bash
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pantheon --network=ropsten --rpc-http-enabled --rpc-http-cors-origins "http://remix.ethereum.org"
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```
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## Run a Node on Rinkeby Testnet
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To run a node on Rinkeby specifying a data directory:
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```bash
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pantheon --network=rinkeby --data-path=<path>/<rinkebydata-path>
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```
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Where `<path>` and `<rinkebydata-path>` are the path and directory where the Rinkeby chain data is to be saved.
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## Run a Node on Goerli Testnet
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To run a node on [Goerli](https://github.com/goerli/testnet) specifying a data directory:
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```bash
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pantheon --network=goerli --data-path=<path>/<goerlidata-path>
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```
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Where `<path>` and `<goerlidata-path>` are the path and directory where the Goerli chain data is to be saved.
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## Run a Node on Ethereum Mainnet
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To run a node on the Ethereum mainnet:
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```bash
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pantheon
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```
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To run a node on mainnet with the HTTP JSON-RPC service enabled and available for localhost only:
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```bash
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pantheon --rpc-http-enabled
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```
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