How is gas price too low corrected (truffle deploy)?

Question

truffle.js

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 8540,
      network_id: "*",
      gas: 4600000,
gasPrice: 4000000   // Match any network id
    }
  }
};

< "code": -32010, < "message": "Transaction gas price is too low. There is another transaction with same nonce in the queue. Try increasing the gas price or incrementing the nonce." < }, < "id": 6 < }

I am using parity.

How would I know what gas price should be used, or how is the nonce changed?

Answer 1

Your problem is not really the gas price but the nonce of the transaction.

It is saying that there is already a transaction waiting to be mined with the exact same nonce. You must increase the nonce of your transaction. I recommand you to read the yellow paper

The gas price message is just saying that it cannot accept this transaction because it should have a superior gas price than the other one to be considered as the correct one.

Answer 2

Use --no-persistent-txqueue in the start of the node to remove the old txn.