Daniel van Dorp djvdorp

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

BOSH command line interface cheatsheet

Introduction

BOSH is a powerful tool to install and manage your deployments. You can find docs on https://bosh.io/docs. Consider using bosh-init tool to install to a cloud of your choice MicroBOSH instance (MicroBOSH is a single VM BOSH installation, it has everything that you need to deploy and manage).

Installing of BOSH CLI

BOSH command line interface is implemented as a ruby gem and can be run on every platform that supports ruby, you'll need to have ruby 2.1.x or higher to run it. To install it you can run gem install bosh_cli and gem update bosh_cli to update to a newer version.

MacBookNetworkAliveOnSleep

As someone that regularly has multiple SSH/VPN sessions open, it can be a huge inconvience to lose all the connections when I lock my screen to get up to go to a meeting, lunch, etc. This is especially true for those connections that require two factor authentication. So, how can I tell my MacBook to keep those connections alive, even though my screen is locked?

Well, turns out that it is pretty simple. All that is needed is to run the following command.

cd /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources
sudo ./airport en0 prefs DisconnectOnLogout=NO

How to Review Changes between Cloud Foundry Releases

This gist decribes a recommended way to review the differences between Cloud Foundry releases so they can be applied to our environments.

There are multiple ways listed to check the differences but typically you want to

Use git diff to see what has changed between release branches
Check the spec files to see the default options of the items that have been introduced or changed
Generate two Cloud Foundry manifests from each release and compare the two using spiff diff

"Scar Tissues Make Relationships Wear Out"

04/26/2103. From a lecture by Professor John Ousterhout at Stanford, class CS142.

This is my most touchy-feely thought for the weekend. Here’s the basic idea: It’s really hard to build relationships that last for a long time. If you haven’t discovered this, you will discover this sooner or later. And it's hard both for personal relationships and for business relationships. And to me, it's pretty amazing that two people can stay married for 25 years without killing each other.

[Laughter]

> But honestly, most professional relationships don't last anywhere near that long. The best bands always seem to break up after 2 or 3 years. And business partnerships fall apart, and there's all these problems in these relationships that just don't last. So, why is that? Well, in my view, it’s relationships don't fail because there some single catastrophic event to destroy them, although often there is a single catastrophic event around the the end of the relation

	# filter by request host header
	varnishlog -q 'ReqHeader ~ "Host: example.com"'

	# filter by request url
	varnishlog -q 'ReqURL ~ "^/some/path/"'

	# filter by client ip (behind reverse proxy)
	varnishlog -q 'ReqHeader ~ "X-Real-IP: .*123.123.123.123"'

	# filter by request host header and show request url and referrer header

	#!/usr/bin/env bash

	#copy this in a folder from path ex: /usr/local/bin
	#usage: docker-machine-rename default my-default

	# Authors
	#
	# alexproca initial script
	# eurythmia sed magic

	# A heavily customized VCL to support WordPress
	# Some items of note:
	# Supports https
	# Supports admin cookies for wp-admin
	# Caches everything
	# Support for custom error html page
	vcl 4.0;
	import directors;
	import std;

	# See docs/examples
	# http://doc.gitlab.com/ce/ci/quick_start/README.html
	# http://doc.gitlab.com/ce/ci/yaml/README.html

	# GitLab CI template for Go tests. Note this installs
	# a new working copy of Go in a non-standard path such
	# that sudo/root is not needed for the install stage.

	# note that this particular install-environment stage
	# is overly verbose in order to debug anything tricky

	# === Optimized my.cnf configuration for MySQL/MariaDB (on Ubuntu, CentOS, Almalinux etc. servers) ===
	#
	# by Fotis Evangelou, developer of Engintron (engintron.com)
	#
	# ~ Updated September 2024 ~
	#
	#
	# The settings provided below are a starting point for a 8-16 GB RAM server with 4-8 CPU cores.
	# If you have different resources available you should adjust accordingly to save CPU, RAM & disk I/O usage.
	#