akaron

For operation systems: Ubuntu, Debian, and MacOS. In windows the pip and virtualenv commands should be the same once python is installed somewhere.

Install pip, virtualenv, and python module in virtualenv

Debian/Ubuntu

Use python module psutil as example.

> sudo apt update
> sudo apt install python-pip virtualenv

> /usr/bin/virtualenv ~/venv # create virtualenv in ~/venv

note: create private geth rpc server using ssh port forwarding

In short, user provide ssh key to rpc server manager. Once the manager configured, then everytime the user need to type folowing commands to access to the geth rpc server:

ssh -N -L 9545:localhost:8545 geth@machine_A_addr
... and set the rpc to http://localhost:9545

For convenienve, in the following I use these abbreviations:

machine A: run geth full node with RPC server
machine B: using the geth RPC from machine A

	# In terraform, the attribute of autoscaling group does not contain detail information of EC2 instances,
	# i.e., cannot get the ip of instances for further usage (such as ansible). Of course it's better to make
	# it no need to know the ip by using tools such as user-data of EC2 instance (for bootstrap) and LB and
	# route 53.
	#
	# In case still want to know the ip addresses, one can use `data "aws_instances"` which
	# `depends_on = [aws_autoscaling_group.name]`, then use tags to get the information of instances.
	# ref: https://github.com/terraform-providers/terraform-provider-aws/issues/511#issuecomment-447934405

	provider "aws" {

	set nocompatible " be iMproved, required

	" vim-plug, see https://github.com/junegunn/vim-plug
	call plug#begin('~/.vim/plugged')
	Plug 'tpope/vim-sensible'
	Plug 'tpope/vim-commentary'
	Plug 'tpope/vim-repeat'
	Plug 'vim-airline/vim-airline'
	Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
	Plug 'sheerun/vim-polyglot'

	'use strict'
	const StreamrClient = require('streamr-client');
	const apiKey = '' // read-only key created via streamr.network/stream

	// Create the client using api key
	const client = new StreamrClient({
	auth: {
	apiKey: apiKey
	}
	})

	#!/usr/bin/env node
	'use strict';

	// basic functions for mean and standard deviation
	let getMean = (data) => {
	return data.reduce(function (a, b) {
	return Number(a) + Number(b);
	}) / data.length;
	};

	function! MarkdownFolds()
	let thisline = getline(v:lnum)
	if match(thisline, '^##') >= 0
	return ">2"
	elseif match(thisline, '^#') >= 0
	return ">1"
	else
	return "="
	endif
	endfunction

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