Geth Installation Instructions
How to Install Geth/Ethereum on Mac:
Step 1: Open Terminal
Go to Launchpad and open terminal. If it is not viewable type it “Terminal” into the search bar and it should appear. Click on it and open terminal
Step 2: Install Homebrew
To install homebrew copy and paste the following command into terminal and click return.
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Step 3: Install Geth
Once you have installed Homebrew you will need to install Geth. To do so copy and paste the following commands into your terminal one at a time and run them
brew update
brew upgrade
brew tap ethereum/ethereum
brew install ethereum
Step 4: Once you have reached this step, go to step 2 of the Linux Instructions on the Lab Page.
Linux instructions:
Step 1, Install Geth:
apt-get install software-properties-common
add-apt-repository -y ppa:ethereum/ethereum
apt-get update
apt-get -y install ethereum
Step 2:
Once geth is created, you'll need to initialize geth using the genesis.json file:
Do not make any edits to the Genesis.json file
Download the Genesis file from this repository: https://github.com/natemiller1/GethLab wget https://raw.githubusercontent.com/natemiller1/GethLab/master/genesis.json
Double check that you have the same genesis.json file as me (and other network particiapnts, capitalization doesn't matter)
sha1sum genesis.json should result in 44030c0d27885669eea187eeccf8be0e7148c183
sha256sum genesis.json should result in b5836675e0db566b249cf3c293938bb6f410a4e8fbc74d43b4fa3d6f86e78901
You'll also need to create a folder to hold the network blockchain data - call it: ethdata. Remember where you create the folder, it may be easiest to create it on the desktop/active directory. Once you have the genesis file and new folder, you can initiate the blockchain on your computer. Replace PATH/TO with the folders that lead to your folder/genesis file. The paths may look something like: ~/Desktop/ethdata ~/Desktop/genesis.json
geth --datadir ~/PATH/TO/ethdata init ~/PATH/TO/genesis.json
Once initialized, run this code to start the node WARNING!!! these tags should only be used for a private test network, never with a public ethereum node:
geth --datadir ~/PATH/TO/ethdata --networkid 1919 --rpc.allow-unprotected-txs --http --http.api=“db,eth,net,web3,personal” --http.corsdomain="*" --nodiscover console
Windows Instructions
Get and install Geth from here: https://ethereum.github.io/go-ethereum/downloads/ Install Geth in Program Files\Geth Inside the Geth folder, put the genesis.json file (from this github: https://github.com/natemiller1/GethLab/blob/master/genesis.json) and create a new folder called ethereumprivate
We'll need to run Geth from the command prompt so hit the windows key and x and click 'powershell(admin)' (We need to run with admin privileges, you may get a warning asking if you're sure you want to do this, hit yes)
Next you'll change directories to:
cd 'C:\Program Files\Geth'
First we'll need to initialize where we will store the blockchain data as well as the genesis block we'll initiate from:
geth.exe --datadir=ethdata init genesis.json
Once we've initialized, we won't have to do that again, now we can start geth, WARNING!!! these tags should only be used for a private test network, never with a public ethereum node:
geth.exe --datadir ~/PATH/TO/ethdata --networkid 1919 --rpc.allow-unprotected-txs --http --http.api=“db,eth,net,web3,personal” --http.corsdomain="*" --nodiscover console
Once you have geth running (All Users)
Creating an account. You'll be asked to provide a passphrase.
personal.newAccount()
Defining your initial/primary account as coinbase:
miner.setEtherbase(eth.accounts[0])
Verify coinbase:
eth.coinbase
Go to the google sheet and copy the admin.addPeer code from the enode column in its entirety and enter in the console
https://docs.google.com/spreadsheets/d/17ed-1gr6TlUMxhpu3OBVUEU_3aRr1RTm2roUwPoZ9E4/edit#gid=0
check that the nodes are connected, there should be a list of the node's attributes:
admin.peers
Occassionally, I'll run into issues connecting peers, if you run the admin.addPeer code and receive 'true' but admin.peers results in [], exit geth and reinitialize your datadir (add a 1 to the directory): geth --datadir ~/PATH/TO/ethdata1 init ~/PATH/TO/genesis.json then restart geth with the new datadir geth --datadir ~/PATH/TO/ethdata --networkid 1919 --rpc.allow-unprotected-txs --http --http.api=“db,eth,net,web3,personal” --http.corsdomain="*" --nodiscover console
After that's done you can start and stop the mining process by using the below code. The first time you start mining, you will need to install DAG (a specific dataset related to proof of work), this will take a minute or so, then mining will commence.
miner.start(1) #the number indicates how many of your CPU cores are being used for mining.
miner.stop()
You can also peer with each other, by default your geth instance will be able to TCP peer over port 30303. You can change this when starting geth by adding the tag --port 3020 (or whatever port you want, avoid anything under 1025). Once geth is running you can type admin.nodeInfo which will display your enode address. To add a peer, admin.addPeer("enode://xxxxxxx@ipaddress:port?discport=0")
Installing / Using the Mist wallet
If you want more functionality you can get Mist, which will make it easier to send Ethereum and create smart contracts. Go to:
https://github.com/ethereum/mist/releases/tag/v0.10.0
Make sure you get version 0.10.0 and chose the applicable program for your operating system Make note of where you installed Mist.
Starting Mist Windows, you can do this from either powershell or cmd.exe, just open another instance of it.
cd C:\Path\To\Mist
mist.exe --rpc http://localhost:8545
Starting Mist Mac open terminal in Mac
open -a Mist --args --rpc http://localhost:8545
Using MetaMask MetaMask is a simple browser extension that serves as a wallet.
Head to metamask.io and install the browser extension. Once your account is created, you'll need to back up your wallet with a seed code (we aren't using real ethereum so this step isn't that important, but if you decide to use MetaMask as an actual wallet, please do not store your seed phrase on your computer).
After your account is created, there is a button in the top right that should say Main Ethereum Network - if you click on that and select localhost:8545, it should connect to your Geth instance.