Start Node
Starting KalyChain
Prerequisites
Local block data
When connecting to a network other than the network previously connected to, you must either delete the local block data or use the --data-path
option to specify a different data directory.
To delete the local block data, delete the database
directory in the kaly/build/distribution/kaly-<version>
directory.
Genesis configuration
To define a genesis configuration, create a genesis file (for example, genesis.json
) and specify the file using the --genesis-file
option.
When you specify --network=dev
, KalyChain uses the development mode genesis configuration with a fixed low difficulty. A node started with --network=dev
has an empty bootnodes list by default.
Confirm node is running
If you started Kaly with the --rpc-http-enabled
option, use cURL to call JSON-RPC API methods to confirm the node is running.
!!!example
* `eth_chainId` returns the chain ID of the network.
```bash
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}' localhost:8545
```
* `eth_syncing` returns the starting, current, and highest block.
```bash
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}' localhost:8545
```
For example, after connecting to Mainnet, `eth_syncing` will return something similar to:
```json
{
"jsonrpc" : "2.0",
"id" : 1,
"result" : {
"startingBlock" : "0x0",
"currentBlock" : "0x2d0",
"highestBlock" : "0x66c0"
}
}
```
Run a node for testing
To run a node that mines blocks at a rate suitable for testing purposes:
kaly --network=dev --miner-enabled --miner-coinbase=0xfe3b557e8fb62b89f4916b721be55ceb828dbd73 --rpc-http-cors-origins="all" --host-allowlist="*" --rpc-ws-enabled --rpc-http-enabled --data-path=/tmp/tmpDatdir
You can also use the following configuration file on the command line to start a node with the same options as above:
network="dev"
miner-enabled=true
miner-coinbase="0xfe3b557e8fb62b89f4916b721be55ceb828dbd73"
rpc-http-cors-origins=["all"]
host-allowlist=["*"]
rpc-ws-enabled=true
rpc-http-enabled=true
data-path="/tmp/tmpdata-path"
Run a node
To run a node on KalyChain network specifying a genesis file and data directory:
kaly --genesis-file=<path>/genesis.json --data-path=<data-path> --rpc-http-enabled --bootnodes=<bootnodes>
Where <data-path>
is the path to the directory to save the chain data to. Ensure you configure a peer discovery method, such as bootnodes
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