Blockchain By Example

Node initialization

Now that we have the genesis.json file, let's forge the genesis block. Both nodes should initialize their chain using the same genesis file by running the following commands:

geth --datadir nodeA init genesis.jsongeth --datadir nodeB init genesis.json 

All set. Now you can start your new chain on both nodes using two Terminals.

Starting node A as follows:

geth --datadir nodeA --networkid 1234 --rpc  --rpcport 8545 --port 8888  --rpcapi “db,eth,net,web3,personal,miner,admin”  --cache=128 --rpcaddr 0.0.0.0 --rpccorsdomain "*" console

And it's the same for node B (update parameters specific to the node):

geth --datadir nodeB --networkid 1234 --rpc --rpcport 9545 --port 9999 --rpcapi “db,eth,net,web3,personal,miner,admin” --cache=128 ...