Sebastiaan van Stijn thaJeztah

Ubuntu ... or Alpine? A quick comparison

Let's see how they compare with a minimal example: run an image that installs curl and pulls the Holberton homepage

Ubuntu

Pull the ubuntu:16.04 image

Docker Swarm with Macvlan, Consul and Autoscaling

TL;DR:

This will get you routable containers with IPs on your existing subnets, advertising to Consul. They will also be scalable and placed across a cluster of Swarm hosts. It's assumed that you are already running Consul, so if not, there are a ton of tutorials out there. It's also assumed you know how to install Docker and various Linux kernels.

Bonus: We add an autoscaling API called Orbiter (https://gianarb.it/blog/orbiter-the-swarm-autoscaler-moves).

I just want to run containers, like now, on my existing infrastructure and networks!

So you have an existing environment. You use Consul for service discovery. Life is good. Containers are now a thing and you want to work them in without having to worry about overlay networking or reverse proxies. You also don't want to add extra latency (as some naysayers could use it as fuel to kill your hopes and dreams). Lastly, you don't have a lot of time to invest in a complex orchestration tool, such a

Launch a one-off git server from any local repository.

I [tweeted this already][1] but I thought it could use some expansion:

Enable decentralized git workflow: git config alias.serve "daemon --verbose --export-all --base-path=.git --reuseaddr --strict-paths .git/"

Say you use a git workflow that involves working with a core "official" repository that you pull and push your changes from and into. I'm sure many companies do this, as do many users of git hosting services like Github.

Say that server, or Github, goes down for a bit.

Setup LibreOffice Online (Log/Guide) [WIP]

About

This guide/log is based off my experience attempting to build and install LibreOffice Online and it's dependencies on my system.

The end goal is to get LibreOffice Online integrated with Karoshi Server.

LibreOffice Online is still in development (17/06/16).

WORKDIR doesn't respect USER when creating directories 20295

Use a directive?

Expose appropriate docker run options to docker build 19259

Add session identifier header 27509

Proof of concept setup for Wordpress running under PHP-FPM with an Nginx frontend

Usage

Build a copy of this image:

git clone git://github.com/d9206eacb5a0ff5d6be0.git docker-nginx-fpm
cd docker-nginx-fpm
docker build -t nginx-fpm .

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

3 x Cluster on AWS

manager1
worker1
worker2

Docker-machine commands

Use docker-machine to lay down 3 x hosts on AWS using docker-engine 1.12

docker-machine create --driver amazonec2  --amazonec2-private-address-only --engine-install-url https://test.docker.com/ levenson-docker-swarm-manager1 
docker-machine create --driver amazonec2  --amazonec2-private-address-only --engine-install-url https://test.docker.com/ levenson-docker-swarm-worker1

	# Description: Boxstarter Script
	# Author: Jess Frazelle <[email protected]>
	# Last Updated: 2017-09-11
	#
	# Install boxstarter:
	# . { iwr -useb http://boxstarter.org/bootstrapper.ps1 } \| iex; get-boxstarter -Force
	#
	# You might need to set: Set-ExecutionPolicy RemoteSigned
	#
	# Run this boxstarter by calling the following from an elevated command-prompt:

	BITS 32

	org 0x05000000
	db 0x7F, "ELF"
	dd 1
	dd 0
	dd $$
	dw 2
	dw 3
	dd 0x0500001B