Emil Nikolov e-nikolov

Virtual Networking on Linux

In the Linux Kernel, support for networking hardware and the methods to interact with these devices is standardized by the socket API:

                +----------------+
                |   Socket API   |
                +-------+--------+
                        |
User space              |

MicroService Proxy Gateway Solutions

Kong, Traefik, Caddy, Linkerd, Fabio, Vulcand, and Netflix Zuul seem to be the most common in microservice proxy/gateway solutions. Kubernetes Ingress is often a simple Ngnix, which is difficult to separate the popularity from other things.

Github Star Trend:

This is just a picture of this link from March 2, 2019

Originally, I had included some other solution

Server Price Breakdown: DigitalOcean, Amazon AWS LightSail, Vultr, Linode, OVH, Hetzner, Scaleway/Online.net:

Permalink: git.io/vps

$5/mo

Provider	Type	RAM	Cores	Storage	Transfer	Network	Price

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

	{ config, lib, pkgs, modulesPath, ... }:

	{
	imports =
	[
	"${fetchTarball "https://github.com/NixOS/nixos-hardware/archive/2a7063461c3751d83869a2a0a8ebc59e34bec5b2.tar.gz" }/raspberry-pi/4"
	];

	boot.kernelPackages = pkgs.linuxPackages_rpi4;
	boot.kernel.sysctl."vm.swappiness" = 0;

	#!/bin/sh

	# Required on macOS because cctools is marked as broken
	export NIXPKGS_ALLOW_BROKEN=1
	nix run -f image.nix -c push
	docker run ghcr.io/piperswe/hello

	# perform a fresh install of Ubuntu 17.10

	# upgrade the kernel to v4.13.10
	mkdir ~/kernel-v4.13.10
	cd ~/kernel-v4.13.10
	wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13.10/linux-headers-4.13.10-041310_4.13.10-041310.201710270531_all.deb
	wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13.10/linux-headers-4.13.10-041310-generic_4.13.10-041310.201710270531_amd64.deb
	wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13.10/linux-image-4.13.10-041310-generic_4.13.10-041310.201710270531_amd64.deb
	sudo dpkg -i *.deb

	# Instructions for 4.14 and cuda 9.1
	# If upgrading from 4.13 and cuda 9.0
	$ sudo apt-get purge --auto-remove libcud*
	$ sudo apt-get purge --auto-remove cuda*
	$ sudo apt-get purge --auto-remove nvidia*
	# also remove the container directory direcotory at /usr/local/cuda-9.0/

	# Important libs required with 4.14.x with Cuda 9.X
	$ sudo apt install libelf1 libelf-dev

	package chan_test

	import (
	"testing"
	)

	func BenchmarkStructChan(b *testing.B) {
	ch := make(chan struct{})
	go func() {
	for {