iMom0 imom0

Overview

Syncing an Ethereum node is largely reliant on latency and IOPS, I/O Per Second, of the storage. Budget SSDs will struggle to an extent, and some won't be able to sync at all. IOPS can roughly be used as proxy of / predictor for latency. Measuring latency directly is arguably better.

This document aims to snapshot some known good and known bad models.

The drive lists are ordered by interface and then by capacity and alphabetically by vendor name, not by preference. The lists are not exhaustive at all. @mwpastore linked a filterable spreadsheet in comments that has a far greater variety of drives and their characteristics. Filter it by DRAM yes, NAND Type TLC, Form Factor M.2, and desired capacity.

For size, 4TB is a very conservative choice. The smaller 2TB drive should last an Ethereum full node until at least sometime 2026, with the [pre-merge history expiry](https://hackmd.io/@hBXHLw_9Qq2va4pRt

常用镜像仓库

DockerHub镜像仓库
google镜像仓库

https://gcr.io/google-containers/

https://gcr.io/kubernetes-helm/

Enable profiling

Default http server

import (
    _ "net/http/pprof"
    "net/http"
)

There are several ways to clone a repository from github. Similar from other providers, such as bitbucket, gitlab, etc.

https://git-scm.com/book/en/v2/Git-on-the-Server-The-Protocols

Mostly, we use

http
ssh

Sample clone commands:

UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start

	// ==UserScript==
	// @name Twitter: Mute all ads
	// @namespace Violentmonkey Scripts
	// @match https://twitter.com/*
	// @grant none
	// @version 1.0
	// @author @weijarz
	// @description 7/5/2023, 9:31:41 PM
	// ==/UserScript==

	package main

	import (
	"context"
	"encoding/hex"
	"fmt"
	"github.com/ethereum/go-ethereum/accounts/abi"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/ethclient"

	// exporting from a bs58 private key to an Uint8Array
	// == from phantom private key to solana cli id.json key file
	// npm install bs58 @solana/web3.js

	const web3 = require("@solana/web3.js");
	const bs58 = require('bs58');
	let secretKey = bs58.decode("[base58 private key here]");
	console.log(`[${web3.Keypair.fromSecretKey(secretKey).secretKey}]`);

	// exporting back from Uint8Array to bs58 private key

	package main

	import (
	"context"
	"encoding/hex"
	"fmt"
	"strings"

	"github.com/ethereum/go-ethereum"
	"github.com/ethereum/go-ethereum/accounts/abi"

	#!/usr/bin/env python3

	from __future__ import print_function
	import frida
	import sys
	import json
	import time

	def on_message(message, payload):
	if(message['type'] == 'send'):