JucaRei

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Systems, infrastructure and digital product tools and hints

Table of Contents

General
Infrastructure as Code
Logging
Tracing
Monitoring & Observability
Networking
PaaS: Platform as a Service

Complete solution for websites hosting

This gist contains example of how you can configure nginx reverse-proxy with autmatic container discovery, SSL certificates generation (using Let's Encrypt) and auto updates.

Features:

Automatically detect new containers and reconfigure nginx reverse-proxy
Automatically generate/update SSL certificates for all specified containers.
Watch for new docker images and update them.
Ban bots and hackers who are trying to bruteforce your website or do anything suspicious.

Awesome Piracy

A curated list of arrrrrrrrr!

Installing Arch Linux

Small notes before we start:

Arch Linux now comes with an installer, so if you just want a minimal system ready in a few minutes, you're better off just doing archinstall.
This guide is for UEFI only, not BIOS.
The only officially supported architecture by Arch Linux is x86_64, so make sure your computer uses that architecture before attempting to install it.
Some computers won't work out of the box because of bugs left by the manufacturers.

Awesome dns resolver

No Filter

https://dns.sb (Anycast) 2a09:: / 2a09::1 185.222.222.222 (@853 DoT, plaintext) https://doh.dns.sb/dns-query (DoH)

Expression for a buildEnv-based declarative user environment

This is one way of managing your user profile declaratively.

Alternatives include:

an attrset-based nix-env-based environment, installed using nix-env -ir rather than nix-env --set. LnL has an overlay which shows a way of doing this.
home-manager, which provides NixOS-like config for your $HOME

Note that this is incompatible with regular imperative use of nix-env, e.g. nix-env -iA nixpkgs.hello. It has the advantage of allowing the installation of multiple outputs of the same package much better than nix-env's builtin profile builder does.

walkthrough: buildah on knative

The buildah utility is a versitile container build tool that does not require a daemon (everything is direct invocation). See my "deep dive" for a few hands on use-cases.

Recently knative was announced. It is a project to enable the kubernetes primitives needed to build a functions-as-a-service. There are a plumbing services needed around this use-case, "build" is one of them. Building containers is largely an indepenent goal and story of "serverless" or "FaaS", but I get why they are grouped together.

	# Obtain the latest Void Linux base live ISO from:
	# https://voidlinux.org/download/ (plain musl version)

	# Write it to a USB drive:
	# sudo dd bs=4M if=void-live-x86_64-musl-20181111.iso of=/dev/sdb status=progress oflag=sync

	# Switch to bash (easier to use while installing)
	bash

	# Set UK keymap

	! urxvt

	URxvt*geometry: 115x40
	!URxvt*font: xft:Liberation Mono:pixelsize=14:antialias=false:hinting=true
	URxvt*font: xft:Inconsolata:pixelsize=17:antialias=true:hinting=true
	URxvt*boldFont: xft:Inconsolata:bold:pixelsize=17:antialias=false:hinting=true
	!URxvt*boldFont: xft:Liberation Mono:bold:pixelsize=14:antialias=false:hinting=true
	URxvt*depth: 24
	URxvt*borderless: 1
	URxvt*scrollBar: false