Build your Private Ethereum Geth PoA Blockchain Network

Launch a machine running Ubuntu server, micro instance, 16 gb storage, open ports 22, 80, 443 plus an ICMP rule; create a key pair to log in and install geth.

Assign an elastic ip address to the virtual machine and associate it to prevent public ip changes, ensuring a stable network for the private ethereum geth poa blockchain.

Log into the virtual machine with a private key and install geth, name the node, then run sudo apt-get update and sudo apt-get install geth to fetch dependencies.

Complete Geth installation on the virtual machine, verify by running Geth, cancel the mainnet download to avoid memory overload, and prepare a private Ethereum network with a folder structure.

Verify virtual machine connectivity by pinging the public IP, fix closed ports, and update the security group to open port 30301 for the private Ethereum Geth PoA network.

Create a folder structure for our private Ethereum Geth PoA network, placing data under /opt in a dhb folder with Peewee and a node 0 folder.

Create an Ethereum node account by generating an interim account, saving data in a data folder, and securing it with a strong password.

Explore the genesis file for a private Ethereum geth network, covering the genesis configuration, consensus, and initial allocations. Learn how puppet generates the genesis file for deployment.

Create a genesis file for a private Geth poa network using puppet, configure clique, set a sealer, prefund accounts, and export the genesis.

Customize the genesis file for a private Ethereum Geth PoA network by editing, exporting, and updating node addresses and balances in a local environment.

Initialize the genesis in Geth by setting the data directory and running the init command with the genesis.json, then verify a successful genesis load.

Launch a private ethereum geth poa network by configuring a full node with a data directory, port 30303, rpc and web socket settings, clique mining, and a password-protected account.

Launch a private Ethereum Geth network by using the provided interim account and password to connect, enable mining with --mine, and initialize the genesis block.

Connect to the newly created private geth PoA network from outside the blockchain using geth attach to the public IP and port, then verify the connection with a test transaction.

Install Metamask Chrome extension, create and secure a wallet, import a keystore, and connect Metamask to your private RPC to interact with the PoA network and deploy contracts.

Deploy a simple storage smart contract on a private Ethereum Geth PoA network using Remix; connect, set zero gas, and verify deployment with the contract address.

Set up a systemd service for geth to run in the background, create and configure the geth.service unit file, enable restart on boot, and verify the backend network readiness.

Deploy and manage geth system services for a private ethereum poa network by enabling, starting, and monitoring geth, then add a second node and join peers.

Set up a new geth node by copying the existing genesis file from Node 1, creating the genesis file on the new node, and pasting it as is.

Initialize geth for a new node and confirm that node 0 and node 1 share the same genesis file. Start the network for node 1 in the next video.

Launch the newly created node by copying the node 0 command for node 1, set its ip, remove mining, and observe block zero with the nodes unconnected.

Attach to node 0, observe no peers, and add node 1 as a peer with geth admin commands to link blocks across nodes in a private ethereum poa network.

Connect node 0 and node 1 by either passing all information from node 0 to node 1 or from node 1 to node 0, noting a drawback.

Show how node 1 stays in sync with node 0, then demonstrate how rebooting forgets peers and prevents broadcasting transactions in a private Geth PoA network.

Create and edit a static-nodes.json file, copy it to all virtual machines, place it in the data directory, and start the private geth network to connect peers.

Learn how to add and remove validators in the private Geth PoA Ethereum blockchain network, with careful command execution to avoid locking your node or network.

Learn to manage signers in a private Ethereum Geth PoA network using clique, including proposing signers and maintaining five to seven signers with 51 percent voting power to mine blocks.