fr0zn / eth-private-network

Ethereum PoA private network

Ethereum PoA private network

A Docker based implementation of blockchain network for testing and development purposes including:

• 1 Bootnode
• 1 Ethereum node
• 2 Ethereum miner nodes
• 2 Swarm nodes (distributed storage platform)
• Ethereum Network Status Dashboard

Using Proof-of-Authority consensus instead of Proof-of-Work. New block creates every 5 seconds.

Prerequisites

You should have installed Docker and Docker Compose in your machine.

git clone https://github.com/fr0zn/eth-private-network.git
cd eth-private-network

git clone --branch fix/tracer https://github.com/fr0zn/blockscout explorer

Config

• Create two accounts using the same password

docker run -it --rm  -v `pwd`/node:/root/.ethereum ethereum/client-go account new
docker run -it --rm  -v `pwd`/node:/root/.ethereum ethereum/client-go account new

• Write the account addresses under .env, change ACCOUNT_1 and ACCOUNT_2 (without 0x)

• Copy the password under node/password.txt

echo "password" > `pwd`/node/password.txt

(optional)

• Generate 3 bootnode keys, one for each miner and the rpc node:

docker run -it --rm  -v `pwd`/node:/node ethereum/client-go:alltools-stable bootnode -genkey /node/node.key -writeaddress
docker run -it --rm  -v `pwd`/node:/node ethereum/client-go:alltools-stable bootnode -genkey /node/miner1.key -writeaddress
docker run -it --rm  -v `pwd`/node:/node ethereum/client-go:alltools-stable bootnode -genkey /node/miner2.key -writeaddress

IPS:

node: 172.2.0.110
miner1: 172.2.0.111
miner2: 172.2.0.112

Use the printed enode address on each command on the node/static-nodes.json

---

(continue)

• Generate genesis config

$ go install github.com/ethereum/go-ethereum/cmd/puppeth@latest # or download Geth & Tools from https://geth.ethereum.org/downloads/
$ puppeth
Please specify a network name to administer (no spaces, hyphens or capital letters please)
> genesis
What would you like to do? (default = stats)
 1. Show network stats
 2. Configure new genesis
 3. Track new remote server
 4. Deploy network components
> 2
What would you like to do? (default = create)
 1. Create new genesis from scratch
 2. Import already existing genesis
> 1
Which consensus engine to use? (default = clique)
 1. Ethash - proof-of-work
 2. Clique - proof-of-authority
> 2
How many seconds should blocks take? (default = 15)
> 2
Which accounts are allowed to seal? (mandatory at least one)
> 0x # Enter both accounts address created in the previous step
> 0x # Enter both accounts address created in the previous step
Which accounts should be pre-funded? (advisable at least one)
> 0x # Enter both accounts address created in the previous step
> 0x # Enter both accounts address created in the previous step
Should the precompile-addresses (0x1 .. 0xff) be pre-funded with 1 wei? (advisable yes)
> no
Specify your chain/network ID if you want an explicit one (default = random)
>
What would you like to do? (default = stats)
 1. Show network stats
 2. Manage existing genesis
 3. Track new remote server
 4. Deploy network components
> 2
 1. Modify existing configurations
 2. Export genesis configurations
 3. Remove genesis configuration
> 2
Which folder to save the genesis specs into? (default = current)
  Will create genesis.json, genesis-aleth.json, genesis-harmony.json, genesis-parity.json
> node

• Change NETWORK_ID under .env to match the one from the previous step (it can be found under node/genesis.json)

Run

docker-compose up --build

After all you can find:

• Ethereum Network Stats at http://localhost:3000
• Node 1 RPC access at http://localhost:8545
• Node 2 (miner) RPC access at http://localhost:8546
• Node 3 (miner) RPC access at http://localhost:8547
• Swarm Node 1 HTTP access at http://localhost:8500
• Swarm Node 2 HTTP access at http://localhost:8501