Luke Schoen ltfschoen

Summary of Kusama Validator Lounge, Kusama Watercooler chats up to 11th September 2019

prometheus exporter - https://github.com/w3f/substrate-telemetry-exporter
- it expects to run in the same host as a telemetry backend
- you can run your polkadot nodes in different hosts and configure them to send telemetry data to specific remote telemetry backends as usual, so that you can send data to a backend with the exporter connecte
- do the same as in the Dockerfile, from a clone of that repo you can run yarn && yarn start
polkadot secure validator - https://github.com/w3f/polkadot-secure-validator
- @anson:web3.foundation, @federico:web3.foundation
terraform takes care of it on the complete secure validator setup, that's why i wasn't understanding

Different accounts are used to manage funds. The underlying cryptography of their account keys is the same:

Primary account
Holds funds. Usually a cold wallet (on piece of paper in a safe, or protected by layers of hardware security)
Bonds (locks) a portion of its funds with a Controller for participation (since the stake key is kept offline)
Unbonding requires waiting ~600 blocks before unlocked funds accessible again

	// @ts-check
	const fs = require('fs');

	// Import the API & Provider and some utility functions
	const { ApiPromise, WsProvider } = require('@polkadot/api');

	// import the test keyring (already has dev keys for Alice, Bob, Charlie, Eve & Ferdie)
	const testKeyring = require('@polkadot/keyring/testing');

	// some constants we are using in this sample

	# Copy - CTRL+C
	# Paste - CTRL+V
	# Copy/Paste Terminal - SHIFT+CTRL+C, SHIFT+CTRL+V

	# login to computer
	# contact Arnold for copy of password to be sent via Riot

	# modify settings
	# open Settings > Mouse & Touchpad > Disable Natural Scrolling, Increase Touchpad Speed

	* Setup
	* Create an use a non-root Standard user account and sign-in with it
	* https://apple.stackexchange.com/questions/192365/is-it-ok-to-use-the-root-user-as-a-normal-user
	* Change sudo timeout https://www.maketecheasier.com/edit-sudoers-file-linux/
	* Add user to sudoers file. Login as root. Type `sudo visudo` and add to bottom of file `<USERNAME> ALL=(ALL) ALL`
	* Enable mac Firewall
	* Remove icons not wanted by uncheck 'Keep in Dock'
	* Directory structure: code/src/<github-repo>/<username>
	* Install Riot chat: https://riot.im/desktop.html
	* Add to ~/.gitexcludes `.DS_Store`

	echo "Creating an SSH key for you..."
	ssh-keygen -t rsa

	echo "Please add this public key to Github \n"
	echo "https://github.com/account/ssh \n"
	read -p "Press [Enter] key after this..."

	echo "Installing xcode-stuff"
	xcode-select --install

	pragma solidity ^0.4.19;

	contract CarGarage {
	uint256 public totalPurchasedPackages = 0;
	uint256 public totalEtherDeposited = 0;
	address public owner;

	mapping(address => uint256) accountPackageQuantity;

	event PackagesPurchased(

	# filters the list of tasks that are running that have `./target/debug` in the command name
	# selects the first one's Process ID (PID), then kills it
	ps aux \| grep ./target/debug \| awk 'NR==1{print $2}' \| sudo xargs kill -9;