Mark mvandermeulen

Tabs and Windows

Function	Shortcut
New Tab	`⌘` + `T`
Close Tab or Window	`⌘` + `W` (same as many mac apps)
Go to Tab	`⌘` + `Number Key` (ie: `⌘2` is 2nd tab)
Go to Split Pane by Direction	`⌘` + `Option` + `Arrow Key`
Cycle iTerm Windows	`⌘` + `backtick` (true of all mac apps and works with desktops/mission control)

With Docker 1.8.0 shipped new log-driver for GELF via UDP, this means that the logs from Docker Container(s) can be shipped directly to the ELK stack for further analysis.
This tutorial will illustrate how to use the GELF log-driver with Docker engine.
Step 1: Setup ELK Stack:
- docker run -d --name es elasticsearch
- docker run -d --name logstash --link es:elasticsearch logstash -v /tmp/logstash.conf:/config-dir/logstash.conf logstash logstash -f /config-dir/logstash.conf
- Note the config for Logstash can be found at this link
- docker run --link es:elasticsearch -d kibana
Once the ELK stack is up now let's fire up our nginx container which ships its logs to ELK stack.

LOGSTASH_ADDRESS=$(docker inspect --format '{{ .NetworkSettings.IPAddress }}' logstash)
`docker run -d --net=host --log-driver=gelf --log-opt gelf-address=u

Download the latest Raspbian Lite image from https://www.raspberrypi.org/downloads/raspbian/ (2020-02-13 at the time of this writing).

Insert your microSD card. Use balenaEtcher to burn the image to your microSD card.

Ensure the disk is mounted again, then enable SSH.

$ touch /Volumes/boot/ssh

Start up a container (whichever Linux flavour takes your fancy):

docker run -it ubuntu /bin/bash
docker run -it centos /bin/bash

You must have an SSH key, if you don't know what this is then type in ssh-keygen and follow the instructions.

macOS install itself is quite easy using OSX-KVM scripts

igpu setup is quite easy by following instructions on Arch Linux wiki

According to this cloudflare blog article "Load Balancing without Load Balancers", we can build a rock-solid load balancer only using a router. All the magic comes from BGP and Equal-Cost Multi-Path routing.

In this howto, I will use bird as BGP router on linux instance (ie. servers).

I use GNS3 with this architecture :

	#!/bin/bash

	if [ "$1" = "-h" -o "$1" = "--help" -o -z "$1" ]; then cat <<EOF
	appify v3.0.1 for Mac OS X - http://mths.be/appify
	Creates the simplest possible Mac app from a shell script.

	Appify takes a shell script as its first argument:

	`basename "$0"` my-script.sh

	#!/bin/bash

	# change the values below to match your system.

	# target the BUILD_DIR to output from an nw.io build process. nwjs-shell-builder recommended!
	# https://github.com/Gisto/nwjs-shell-builder
	# BASE_DIR is the target directory for this script, where files will be gathered and packaged to

	BUILD_DIR=”/var/www/deploy/TMP/osx-ia32/latest-git”
	BASE_DIR=”/var/www/deploy/osx”

	#!/bin/bash
	# herein we backup our indexes! this script should run at like 6pm or something, after logstash
	# rotates to a new ES index and theres no new data coming in to the old one. we grab metadatas,
	# compress the data files, create a restore script, and push it all up to S3.
	TODAY=`date +"%Y.%m.%d"`
	INDEXNAME="logstash-$TODAY" # this had better match the index name in ES
	INDEXDIR="/usr/local/elasticsearch/data/logstash/nodes/0/indices/"
	BACKUPCMD="/usr/local/backupTools/s3cmd --config=/usr/local/backupTools/s3cfg put"
	BACKUPDIR="/mnt/es-backups/"
	YEARMONTH=`date +"%Y-%m"`