jarek-przygodzki

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.

Manual Configuration

Set Interface Metrics

jarek-przygodzki

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

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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

jarek-przygodzki

VirtualBox config

vbox host vboxnet0 = 192.168.56.1 (static, no dhcp)

vbox smartos guest config:

storage:

• add ISO

audio:

• disable

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#!/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!
#
#

jarek-przygodzki

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

In order of first appearance in The Morning Paper.

• On the duality of operating system structures
• Why threads are a bad idea
• Why events are a bad idea
• Unikernels: library operating systems for the cloud
• The scalable commutativity rule: designing scalable software for multicore processors
• Jitsu: just-in time summoning of unikernels

jarek-przygodzki

#!/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

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= Arch Linux step-by-step installation =
= http://blog.fabio.mancinelli.me/2012/12/28/Arch_Linux_on_BTRFS.html =


== Boot the installation CD ==

== Create partition ==

cfdisk /dev/sda
 * Create a partition with code 8300 (Linux)

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#!/usr/bin/python

from subprocess import check_output as run
import glob

# Get nodes
nodes = run(['docker', 'node', 'ls', '-q']).split()
self = run(['docker', 'node', 'inspect', 'self', '--format={{.ID}}']).strip()

nodeinfo = {}

jarek-przygodzki

Tested against the WebKit git repo by entering the repo with 1 file dirty.

---

git diff --quiet --ignore-submodules HEAD # Will tell if there are any uncomitted changes, staged or not.
0.6 sec

git diff-index --quiet HEAD # Only tracked
2 sec