Skip to content

Latest commit

 

History

History
132 lines (117 loc) · 4.07 KB

README.md

File metadata and controls

132 lines (117 loc) · 4.07 KB
Raw

install geth in Ubuntu

  sudo add-apt-repository -y ppa:ethereum/ethereum
  sudo apt-get update
  sudo apt-get install ethereum

After version release 1.12 POW is no longer supported for this following steps needed to be done

Install go from the following link if not installed yet

remeber the version is go1.20.5.linux-amd64.tar.gz

https://www.digitalocean.com/community/tutorials/how-to-install-go-on-ubuntu-20-04

Clone the git older version

  cd go-ethereum
  git checkout release/1.11
  git pull
  make geth

copy to global (once it done close the terminal and reopen and check geth version)

sudo cp build/bin/geth /usr/local/bin/

create folder

  mkdir private-ethereum
  cd private-ethereum

Create an account. make 2

  geth --datadir ./datadir account new

Make genesis file (details to create a first block)

paste the following code and replace the address in alloc with the account you prev made
{
  "config": {
    "chainId": 4785,
    "homesteadBlock": 0,
    "eip155Block": 0,
    "eip158Block": 0,
    "byzantiumBlock": 0,
    "eip150Block": 0,
    "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000"
  },
  "difficulty": "400",
  "gasLimit": "2000000",
  "alloc": {
    "Daa9D9230fA7d30831dC2cfc624155120Bcf1793": { 
      "balance": "100000000000000000000" 
    },
    "7fFFA35Ddd1Dcf33648F8F61C8a712bDBd8d52D2": { 
      "balance": "120000000000000000000000" 
    }
  }
}

initialize data dir where blockchain data will store

  geth --datadir ./blockchainData init ./genesis.json

Start blockchain by

  geth --datadir ./blockchainData --networkid 4785 console 2>> eth.log

Import account to your blockchain

copy files from keystore to blockchainData. This will copy accounts that we created prev.

to check account details run

  eth.accounts

to run another node

  1. create a new folder like blockchainData with another name
  2. initialize the genesis block for this folder
  3. run the following command to run a new node in a separate terminal
  4. geth --datadir ./blockchainData2 --networkid 4785 --port 30305 --authrpc.port 8553 console
  5. the port and authrpc port must be changed for every node if running on the same machine

peer the nodes

  1. In node 1 run
  admin.nodeInfo
  1. copy the encode value and open the terminal of node 2, run the command and paste the value as a string in param
  admin.addPeer()
  1. now open the terminal of node 1 or node 2 and run admin.peers to see if the node is added
  admin.peers
  1. if it returns an array of objects it means nodes are peers. if an empty array its mean nodes are not peer
  2. now we will start mining
  miner.setEtherbase(eth.accounts[0])
  miner.start()
  1. to stop mining
  miner.stop()
  1. to stop mining empty block add the following script
  var mining_threads = 1
  function checkWork() {
     if (eth.getBlock("pending").transactions.length > 0) {
         if (eth.mining) return;
         console.log("== Pending transactions! Mining...");
         miner.start(mining_threads);
     } else {
         miner.stop();
         console.log("== No transactions! Mining stopped.");
     }
  }
  
  console.log("checkWork() is defined");
  eth.filter("latest", function(err, block) { checkWork(); });
  eth.filter("pending", function(err, block) { checkWork(); });
  
  checkWork();
  1. now run the node with the command (just need to add preload script| all others params are only for accessing it with metamask)
  geth --networkid 47580 --datadir "./node1" --port 30303 --http --http.port '8545' --snapshot=false --ipcdisable --syncmode 'full' --allow-insecure-unlock --    
   http.corsdomain "" --http.vhosts "" --http.addr "0.0.0.0" --preload "startmine.js" console 2>> eth-new.log