Jarek Przygódzki jarek-przygodzki

A collection of The Morning Paper posts relating to containers, operating systems etc.

In order of first appearance in The Morning Paper.

VirtualBox config

vbox host vboxnet0 = 192.168.56.1 (static, no dhcp)

vbox smartos guest config:

storage:

add ISO

audio:

disable

Fibers

Fibers are an abstraction over sequential computation, similar to threads but at a higher level. There are two ways to think about this model: by example, and abstractly from first principles. We'll start with the example.

(credit here is very much due to Fabio Labella, who's incredible Scala World talk describes these ideas far better than I can)

Callback Sequentialization

Consider the following three functions

WSL 2 Cisco AnyConnect Networking Workaround

Overview

WSL 2 uses a Hyper-V Virtual Network adapter. Network connectivity works without any issue when a VPN is not in use. However when a Cisco AnyConnect VPN session is established Firewall Rules and Routes are added which breaks connectivity within the WSL 2 VM. This issue is tracked WSL/issues/4277

Below outline steps to automatically configure the Interface metric on VPN connect and update DNS settings (/etc/resolv.conf) on connect/disconnect.

	#!/bin/bash

	# This simple script creates symlinks for network namespaces of docker containers,
	# then you can interact to that network namespace with built-in iproute2 on linux.
	# See iproute2 convention in: http://man7.org/linux/man-pages/man8/ip-netns.8.html

	container_ids=`docker ps -aq`

	for cid in $container_ids
	do

	#!/bin/sh
	#
	# Creates a SmartOS VM in VirtualBox (assuming you alread have VirtualBox installed)
	#
	# This script will:
	# * Download the latest live ISO image of SmartOS
	# * Create a VirtualBox VM, or update an existing VM with the latest ISO
	# * Configure the VM with a zones disk, and boot it!
	#
	#

	import lombok.val;
	import org.junit.Assert;
	import org.junit.Test;

	import java.lang.invoke.*;

	/*
	Your scientists were so preoccupied with whether or not they could, they didn’t stop to think if they should.

	Please don't actually do this... :P