arianvp

Native Secure Enclave backed ssh keys on MacOS

It turns out that MacOS Tahoe can generate and use secure-enclave backed SSH keys! This replaces projects like https://github.com/maxgoedjen/secretive

There is a shared library /usr/lib/ssh-keychain.dylib that traditionally has been used to add smartcard support to ssh by implementing PKCS11Provider interface. However since recently it also implements SecurityKeyProivder which supports loading keys directly from the secure enclave! SecurityKeyProvider is what is normally used to talk to FIDO2 devices (e.g. libfido2 can be used to talk to your Yubikey). However you can now use it to talk to your Secure Enclave instead!

aojea

kube-proxy nftables and iptables vs a Service with 100k endpoints

Background

Iptables performance is limited mainly by two reasons:

• Latency on the first packet of a connection caused by the linear search rule matching
• Latency on the programming latency caused by the need to save and restore all the lines to the kernel in each transaction

The kernel community moved to nftables as replacement of iptables, with the goal of removing the existing performance bottlenecks. Kubernetes has decided to implement a new nftables proxy because of this and another reasons explained in more detail in the corresponding KEP and during the Kubernetes Contributor Summit in Chicago 2023 on the session [Iptables, end of

JLChnToZ

Shader "Unlit/PolyRhythmVisualizer" {
    Properties {
        _TimeCode ("Input Time", Float) = 0
        _OuterRingFreq ("Outer Ring Frequency", Float) = 1
        _InnerRingFreq ("Inner Ring Frequency", Float) = 0.922
        _RingCount ("Ring Count", Int) = 35
        _VibrantFreq ("Vibrant Frequency", Float) = 2
        _Vibrant ("Vibrant", Range(0, 1)) = 0.5
        _Decay ("Decay", Range(0, 10)) = 2
        [Header(Cosine Gradiant)]

marcan

import tweepy, json, time, sys

auth = tweepy.OAuth1UserHandler(
    <api keys here>
)

api = tweepy.API(auth)

d = json.loads(open(sys.argv[1]).read().split("=", 1)[1])

april

# pretty sudo prompt
read -r -d '' SUDOPROMPT << EOM
🌺🌳🌸🌷🌷🌸🌻🌷🌷🌸🌸🌸🌸🌷🌼🌷🌳🌺🌼🌺🌸🌻🌼🌼🌳🌳🌼🌺🌻🌷🐛🌷🌼🌻🌳🌸🌷🌷🌻🌸
🌸🦉🌻🌸🌳🌷🌸🌷🌸🌳🌸🌻🌳🐌🌻🌷🌷🌼🌻🌺🌺🌻🌼🌻🌻🌼🌺🌻🌳🌼🌳🌺🌳🌷🌻🌼🌷🌼🌻🌸
🌳🌸🌻🌺🌻🌳🌺🌺🌻🌺🌸🌻🌷🌷🌼🌻🌺🌼🌻🌻🌷🌳🌻🌸🌳🌷🌻🌳🌳🌳🌳🌼🌳🌳🌺🌷🌳🌺🌳🌺
🦉🌸🌻🌺🌺🌳🌸🌸🌼🌻🌺🌼🌷🌸🌳🌼🌺🌸🌺🌷🌻🌷🌺🌺🌳🌷🌷🐰🌸🌻🌳🌸🌼🌷🌼🌳🌷🐹🌼🌺
🌷🌳🌻🌸🌸🌼🐰🌷🌺🌷🌺🌻🌷🌸🌺🌻🌳🌻🌷🌻🌻🌺🌸🌸🌺🌻🌸🌻🌳🌳🌻🐦🌻🌼🌼🌻🌻🌺🌳🐰
🌼🐦🌻🌳🌸🌸🌳🌷🌺🌼🌳🌷🌸🌻🌼🌻🐛🌻🌼🌷🌺🌼🌺🌸🌺🦔🌷🌸🌷🌻🌻🌺🌼🌷🐌🌸🌷🌼🌸🐹
🌸🌳🌻🌼🌻🌳🌸🌷🌺🌷🌷🌼🌻🌷🌻🌺🌼🌼🌳🌸🌻🌻🌸🌼🌼🌸🌳🌺🌻🌻🌳🌺🌷🐰🌻🌼🐹🌷🌷🌳
🌼🌷🌻🌸🌼🌳🌻🌻🌳🌷🌼🌻🌺🌺🌺🌺🌺🌳🌻🌼🌷🌸🌸🌻🌺🌻🌳🌸🌷🌺🌺🌼🌸🌺🌻🌻🌷🌸🌻🌷

sorenvonsarvort

# make sure You have installed the infinality patches

export INFINALITY_FT_FILTER_PARAMS="8 17 50 17 8"
export INFINALITY_FT_GRAYSCALE_FILTER_STRENGTH="0"
export INFINALITY_FT_FRINGE_FILTER_STRENGTH="55"
export INFINALITY_FT_AUTOHINT_HORIZONTAL_STEM_DARKEN_STRENGTH="0"
export INFINALITY_FT_AUTOHINT_VERTICAL_STEM_DARKEN_STRENGTH="0"
export INFINALITY_FT_WINDOWS_STYLE_SHARPENING_STRENGTH="20"
export INFINALITY_FT_CHROMEOS_STYLE_SHARPENING_STRENGTH="0"
export INFINALITY_FT_STEM_ALIGNMENT_STRENGTH="0"

PatrickLang

Setting up a Multi-Arch, Multi OS cluster

I wanted to build a home lab to get some experience with how Kubernetes works in a multi-architecture, multi-OS environment. Here's the worklog. I'll probably turn it into a blog later :)

• Setting up a Multi-Arch, Multi OS cluster
  • First node - ODroid HC-1
    • Initial setup of the ODroid
• ODroid frequency scaling (optional)

sdkks

Requirements

1. socat
2. kubectl with proper ~/.kube/config that can connect to your cluster
3. Working knowledge of kubectl client
4. OpenSSH client

How does it work?

1. kubectl does port forwarding to sshd port of your pod. I'm using pm2 process managed to keep my services alive in my workstation container. If you have only sshd, easiest to use is dropbear
2. ProxyCommand of OpenSSH client uses socat to redirect two way fd - to forwarded port of kubectl
3. Voila! You are in

jgsqware

On master and nodes

Pull images form internet access laptop

docker pull gcr.io/google_containers/kube-apiserver-amd64:v1.5.0
docker pull gcr.io/google_containers/kube-controller-manager-amd64:v1.5.0
docker pull gcr.io/google_containers/kube-proxy-amd64:v1.5.0
docker pull gcr.io/google_containers/kube-scheduler-amd64:v1.5.0
docker pull weaveworks/weave-npc:1.8.2
docker pull weaveworks/weave-kube:1.8.2

JonathanMH

// file: index.js

var _ = require("lodash");
var express = require("express");
var bodyParser = require("body-parser");
var jwt = require('jsonwebtoken');

var passport = require("passport");
var passportJWT = require("passport-jwt");