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@kacole2
kacole2 / README.md
Last active April 25, 2020 11:51
EBS and EFS Volumes with Docker For AWS using REX-Ray

EBS and EFS Volumes with Docker For AWS using REX-Ray

This procedure will deploy Docker For AWS and go through the steps to build REX-Ray containers. This process will have some hiccups because Docker for AWS will provision resources in different availability zones (AZs). Multiple workers/agents will be spread across AZs (not regions) which means a potential host failure will trigger Swarm to restart containers that could spread across an AZ. If a container is restarted in a different AZ, the pre-emption mechanism for REX-Ray will not work because it no longer has access to the volume in the former AZ.

Deploy Docker for AWS.

Launch Stack

SSH into one of your Docker Manager Nodes

@rxseger
rxseger / tachfan.py
Created October 9, 2016 04:53
read RPM from a PC fan tachometer wired to GPIO
#!/usr/bin/python -u
# tachfan.py - read RPM from a PC fan tachometer wired to GPIO
#
# references:
# http://electronics.stackexchange.com/questions/8295/how-to-interpret-the-output-of-a-3-pin-computer-fan-speed-sensor
# http://www.formfactors.org/developer/specs/REV1_2_Public.pdf
import RPi.GPIO as GPIO
import time

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

@lmarkus
lmarkus / README.MD
Last active February 25, 2026 02:36
Extracting / Exporting custom emoji from Slack

Extracting Emoji From Slack!

Slack doesn't provide an easy way to extract custom emoji from a team. (Especially teams with thousands of custom emoji) This Gist walks you through a relatively simple approach to get your emoji out.

If you're an admin of your own team, you can get the list of emoji directly using this API: https://api.slack.com/methods/emoji.list. Once you have it, skip to Step 3

HOWEVER! This gist is intended for people who don't have admin access, nor access tokens for using that list.

Follow along...

@Aupajo
Aupajo / demo.rb
Last active August 29, 2015 14:21
class TodoItem < ActiveRecord::Base
extend TimeState
# Scopes added: finished, not_finished
# Instance methods added: finished?, finish!
time_state :finished_at
end
todo_item = TodoItem.create
todo_item.finished_at # => nil
@thomasst
thomasst / migrate-redis.py
Created May 14, 2015 18:26
Migrate Redis data on Amazon ElastiCache
"""
Copies all keys from the source Redis host to the destination Redis host.
Useful to migrate Redis instances where commands like SLAVEOF and MIGRATE are
restricted (e.g. on Amazon ElastiCache).
The script scans through the keyspace of the given database number and uses
a pipeline of DUMP and RESTORE commands to migrate the keys.
Requires Redis 2.8.0 or higher.
exclude_patterns() {
exclude="-false" # need to start the list somewhere so we have the right number of "-or"
for exclude_folder in .git .bundle tmp log; do
exclude="$exclude -or -name $exclude_folder -prune"
done
for exclude_file in Gemfile.lock structure.sql '*.gif' '*.jpg' '*.png' '*jquery*' '*.doc' '*.pdf' '*.zip' '*.ico' '*.swf' '*.sqlite' '*.ttf'; do
exclude="$exclude -or -iname $exclude_file"
done
@steveh
steveh / allthethings.sh
Last active August 29, 2015 13:56
All the things
#!/bin/sh
# Installation: save to /usr/local/bin/allthethings
# and chmod +x /usr/local/bin/allthethings
# Usage: allthethings update
# allthethings install
if [ -f "Gemfile" ]; then
echo "bundler"
@kixorz
kixorz / aws_autoscaling_cron.rb
Created March 20, 2013 22:41
Running cron jobs in AWS Auto Scaling group is tricky. When you deploy the same code and configuration to all instances in the group, cron job would run on all of them. You may not want that. This script detects the first instance in the group and allows only this instance to run the job. IAM user used by this script needs to have permissions to…
#!/usr/bin/env ruby
require 'syslog'
require 'net/http'
require 'aws-sdk'
Syslog.open
AWS.config({
:access_key_id => '<iam user key>',
:secret_access_key => '<iam user secret>'
@trcarden
trcarden / gist:3295935
Created August 8, 2012 15:28
Rails 3.2.7 SSL Localhost (no red warnings, no apache config)
# SSL self signed localhost for rails start to finish, no red warnings.
# 1) Create your private key (any password will do, we remove it below)
$ openssl genrsa -des3 -out server.orig.key 2048
# 2) Remove the password
$ openssl rsa -in server.orig.key -out server.key