alexellis

Installing OpenFaaS with libkrun-based isolation on Fedora 33

Setting up the system

Revert to cgroup v1

The version of containerd that OpenFaaS will download during the installation doesn't support cgroup v2, so we need to configure systemd to avoid using the Unified cgroup Hierarchy, and reboot the system:

alexellis

#! /bin/sh

# Alex Ellis 18th Nov 2020
# Updated for the 1U unit, which has 7 fans

logo () {
echo ""
echo "             ▄██▄"
echo "            ▄█  █▄"
echo "           ▄█    █▄"

alexellis

Convert sequence of JPEG images to MP4 video

ffmpeg -r 24 -pattern_type glob -i '*.JPG' -i DSC_%04d.JPG -s hd1080 -vcodec libx264 timelapse.mp4

• -r 24 - output frame rate
• -pattern_type glob -i '*.JPG' - all JPG files in the current directory
• -i DSC_%04d.JPG - e.g. DSC_0397.JPG
• -s hd1080 - 1920x1080 resolution

Slower, better quality

alexellis

#!/bin/sh
# option 2: paste this into user-data to automate install via boot script
# NOTE: update --label=owner=YOURNAME below if you want to easily identify yours

# renames the host to have a suffix of alexellisio
export original=$(cat /etc/hostname)
sudo hostname $original-master-alexellisio
echo $original-master-alexellisio | sudo tee /etc/hostname

apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

alexellis

package main

// @lizrice, mostly copied from @doctor_julz: https://gist.github.com/julz/c0017fa7a40de0543001

import (
	"fmt"
	"os"
	"os/exec"
	"syscall"
)

alexellis

module("resty.consul", package.seeall)

_VERSION = '0.1.0'

function service_nodes(service)
  local http = require "resty.http"
  local json = require "cjson"
  local hc = http:new()

  local upstream = ""