Casper Pyethapp Development Environment Containers

This repository provides Docker containers for setting up a local Casper testnet as well as connecting to remote testnets.

Dependencies

• docker
• docker-compose

Instructions

Alpha Casper FFG Testnet Instructions

Sync Public Testnet

To sync with a public testnet, you will need to:

1. Clone this repository,
2. Create or import your keystore, and
3. Start your node! You will need to provide a bootstrap_node of the form enode://[NODE_PUB_KEY]@[NODE_IP_ADDR]:30303. The NODE_PUB_KEY is your bootstrap node's public key found in the config.yaml, and NODE_IP_ADDR is its IP address.

$ git clone [email protected]:linyize/docker-pyeth-dev.git
$ cd docker-pyeth-dev
$ make new-acccount
🌟 Creating keystore directory at ./validator/data/config/keystore
mkdir -p ./validator/data/config/keystore
🌟 Enter a new password to encrypt your account:
🌟 Your password is stored at ./validator/data/config/password.txt
🌟 Pyethapp container is creating new address for you, might take few seconds:

$ make run-node bootstrap_node=enode://[NODE_PUB_KEY]@[NODE_IP_ADDR]:30303

In the above example we created a new account. However, if you have a keystore you would like to use feel free to copy and paste it into ./validator/data/config/keystore. Note that your account keystore, blockchain, and logs are all stored in ./validator/data

Running a Miner

At first, you will have no ETH so you may wish to spend some time mining. To do this simply run your node with mine_percent as any number 1-100. mine_percent specifies the percentage of your CPU you want to dedicate to mining. For instance, to start a miner using half your CPU you can run:

$ make run-node mine_percent=50 bootstrap_node=enode://[NODE_PUB_KEY]@[NODE_IP_ADDR]:30303

Running a Validator

Once you have more ETH than the minimum accepted deposit size (currently set to 1500 ETH), deposit your ETH and start validating. For instance, your command may look something like:

$ make run-node validate=true deposit=1501 bootstrap_node=enode://[NODE_PUB_KEY]@[NODE_IP_ADDR]:30303

Logging out and Withdrawing your ETH

If you would like to no longer validate and withdraw your ETH + rewards, you can logout. Note that logging out and withdrawing is not instant and will take at least two epochs. If you would like to logout, stop your validator and then run the following command:

$ make run-node validate=true logout=true bootstrap_node=enode://[NODE_PUB_KEY]@[NODE_IP_ADDR]:30303

You can then watch the logs for Changing validator state to: [VALIDATOR_STATE] to see if your validator has successfully logged out and submitted a withdrawl transaction. You can also use web3 to check to see if your account balance has updated to include your deposit plus your hard earned validation rewards.

Setup Local Testnet

First start up the default bootstrap node & miner with:

$ docker-compose build
$ docker-compose up

Next generate a new account with:

$ make new-account

Then send yourself some ETH with the faucet_util.py:

$ docker cp utils/faucet_util.py bootstrap:/ethereum/
$ docker exec -it bootstrap bash
$ # Logs into docker container
$$ python faucet_util.py $FAUCET_PRIV_KEY $YOUR_ADDRESS localhost
$$ # Check that the transaction worked with
$$ python
> from web3 import Web3, HTTPProvider
> provider_uri = 'http://0.0.0.0:8545'
> web3 = Web3(HTTPProvider(provider_uri))
> web3.eth.getBalance($YOUR_ADDRESS)
50000000000000000000  # Yay!

Login to the network with your validator by running:

$ make run-node validate=true deposit=5000 network_name=dockerpyethdev_back bootstrap_node=enode://d3260a710a752b926bb3328ebe29bfb568e4fb3b4c7ff59450738661113fb21f5efbdf42904c706a9f152275890840345a5bc990745919eeb2dfc2c481d778ee@172.18.250.2:30303

You can then stop your validator and logout with:

$ make run-node validate=true logout=true network_name=dockerpyethdev_back bootstrap_node=enode://d3260a710a752b926bb3328ebe29bfb568e4fb3b4c7ff59450738661113fb21f5efbdf42904c706a9f152275890840345a5bc990745919eeb2dfc2c481d778ee@172.18.250.2:30303