For IBFT2.0

(Note: The steps given below are for the private gasless transaction)

Step-1

Install Besu(Ubuntu)

Check the Java version

java --version

The Java version must be 21 or higher. If not, update it.

Besu Installation latest version - https://github.com/hyperledger/besu/releases

wget https://github.com/hyperledger/besu/releases/download/26.2.0/besu-26.2.0-bin.tar.gz

Extract

tar xvf besu-*-bin.tar.gz

Add to PATH

echo 'export PATH="$HOME/besu/bin:$PATH"' >> ~/.bashrc

source ~/.bashrc

Run

besu --help
besu --version

Step-2

Clone this repository

git clone git@github.com:Herb-Supply-Chain/IBFT-Network.git

cd IBFT-Network

Step-2

Generate node keys and a genesis file

besu operator generate-blockchain-config --config-file=ibftConfigFile.json --to=networkFiles --private-key-file-name=key

Step-3

Move the four key folders, each containing key and key.pub files, to the Node-1/data, Node-2/data, Node-3/data, and Node-4/data directories respectively

networkFiles/
├── genesis.json
└── keys
    ├── 0x438821c42b812fecdcea7fe8235806a412712fc0
    │   ├── key
    │   └── key.pub
    ├── 0xca9c2dfa62f4589827c0dd7dcf48259aa29f22f5
    │   ├── key
    │   └── key.pub
    ├── 0xcd5629bd37155608a0c9b28c4fd19310d53b3184
    │   ├── key
    │   └── key.pub
    └── 0xe96825c5ab8d145b9eeca1aba7ea3695e034911a
        ├── key
        └── key.pub

IBFT-Network/
├── genesis.json
├── Node-1
│   ├── data
│   │    ├── key
│   │    ├── key.pub
├── Node-2
│   ├── data
│   │    ├── key
│   │    ├── key.pub
├── Node-3
│   ├── data
│   │    ├── key
│   │    ├── key.pub
├── Node-4
│   ├── data
│   │    ├── key
│   │    ├── key.pub

Step-4

Copy the genesis.json to the IBFT-Network directory as shown above in the folder tree

Step-5

Open at least 4 terminal instances of Ubuntu or WSL

Each terminal will act as one independent node

Change to the directory where this repository is cloned

Step-6

Run these commands in each terminal as stated below

Terminal 1

besu --data-path=data \
 --genesis-file=../genesis.json \
 --rpc-http-enabled\
 --rpc-http-api=ETH,NET,IBFT \
 --host-allowlist="*" \
 --rpc-http-cors-origins="all" \
 --min-gas-price=0 \
 --api-gas-price-max=0 \
 --profile=ENTERPRISE

Step-7

Terminal 2

besu --data-path=data \
--genesis-file=../genesis.json \
--p2p-port=30304 \
--rpc-http-enabled \
--rpc-http-api=ETH,NET,IBFT \
--host-allowlist="*" \
--rpc-http-cors-origins="all" \
--rpc-http-port=8546 \
--min-gas-price=0 \
--api-gas-price-max=0 \
--profile=ENTERPRISE \
--bootnodes=

--bootnodes value is the enode URL present in the logs of Node-1 See the highlighted text in the picture for reference

Paste the bootnode from Node-1 to Node-2's --bootnodes flag

Step-8

Terminal 3

besu --data-path=data \
--genesis-file=../genesis.json \
--p2p-port=30305 \
--rpc-http-enabled \
--rpc-http-api=ETH,NET,IBFT \
--host-allowlist="*" \
--rpc-http-cors-origins="all" \
--rpc-http-port=8547 \
--min-gas-price=0 \
--api-gas-price-max=0 \
--profile=ENTERPRISE \
--bootnodes=

again the Node-1 enode URL will be pasted in the --bootnodes flag

Step-9

Terminal 4

besu --data-path=data \
--genesis-file=../genesis.json \
--p2p-port=30306 \
--rpc-http-enabled \
--rpc-http-api=ETH,NET,IBFT \
--host-allowlist="*" \
--rpc-http-cors-origins="all" \
--rpc-http-port=8548 \
--min-gas-price=0 \
--api-gas-price-max=0 \
--profile=ENTERPRISE \
--bootnodes=

The same enode URL here as well

Private Blockchain with IBFT2.0 initialized

Now you can use Hardhat, Foundry, or Remix to deploy smart contracts You have 4 RPC URLs for the 4 nodes. Use any one of the RPC URLs to deploy smart contracts, send transactions, and read events on the chain

More nodes can be added; you just have to change the --p2p-port and --rpc-http-port to the next sequential numbers

For more information, refer to https://besu.hyperledger.org/private-networks/tutorials/ibft