open source peterwillcn

Let's Encrypt on Ubuntu 14.04, nginx with webroot auth

This document details how I setup LE on my server. Firstly, install the client as described on http://letsencrypt.readthedocs.org/en/latest/using.html and make sure you can execute it. I put it in /root/letsencrypt.

As it is not possible to change the ports used for the standalone authenticator and I already have a nginx running on port 80/443, I opted to use the webroot method for each of my domains (note that LE does not issue wildcard certificates by design, so you probably want to get a cert for www.example.com and example.com).

Configuration

For this, I placed config files into etc/letsencrypt/configs, named after <domain>.conf. The files are simple:

NOTE: the content is out-of-date. All development is moved to the https://github.com/yurydelendik/wasmception

Using WebAssembly in LLVM

Compiling

# locations, e.g.
export WORKDIR=~/llvmwasm; mkdir -p $WORKDIR
export INSTALLDIR=$WORKDIR

Moved to git repository: https://github.com/denji/golang-tls

Generate private key (.key)

# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048

# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)

ElixirConf 2014

Dave Thomas—Opening Keynote

Twitter | Slides

Think different(ly)

Get out of your rut and learn new ways to think.

Elixir installation guide

Version numbers should be the ones you want. Here I do it with the last ones available at the moment of writing.

The simplest way to install elixir is using your package manager. Sadly, at the time of writing only Fedora shows the intention to keep its packages up to date. There you can simply sudo dnf install erlang elixir and you are good to go.

Anyway, if you intend to work with several versions of erlang or elixir at the same time, or you are tied to a specific version, you will need to compile it yourself. Then asdf is your best friend.

	/*

	Example of reading/writing to PCI config registers via sysfs.

	In this example we write to the SMU (MP1 mailbox) of a Ryzen mobile processor
	to modify a setting that controls CPU's boosting behavior.

	There are two modes, "power-saving" (which is usually automatically activated when running on battery power)
	and "max-performance" (when connected to AC)

	#
	# Copyright (C) 2007 OpenWrt.org
	#
	# This is free software, licensed under the GNU General Public License v2.
	# See /LICENSE for more information.
	#

	include $(TOPDIR)/rules.mk

	PKG_NAME:=elixir

	#!/bin/sh

	KERNEL=$1
	PATCHVER=$2

	[ -z "$1" -o -z "$2" ] && {
	echo "usage: refresh_kernel.sh <version> <release>"
	echo "example: refresh_kernel.sh 3.18 3.18.30"
	exit 1
	}

	# -- mode: ruby --
	# vi: set ft=ruby :

	Vagrant.configure(2) do \|config\|
	config.vm.box = 'ubuntu/trusty64'
	config.vm.provision 'shell', path: 'install-python'
	end

	# Set variables in .bashrc file

	# don't forget to change your path correctly!

	export GOPATH=$HOME/golang
	export GOROOT=/usr/local/opt/go/libexec
	export PATH=$PATH:$GOPATH/bin
	export PATH=$PATH:$GOROOT/bin