Shemeikka’s gists

Shemeikka / restore_test.sh

Created November 9, 2020 09:11

Script for testing PostgreSQL database backups and WAL files. Script downloads backup file from S3 bucket and creates a new PostgreSQL server from that backup. The script uses restore_command to replay WAL files.

	#!/bin/bash

	# Exit immediately if any step fails
	set -eo pipefail

	# Variables

	host=<hostname>
	datetime=$(date +"%Y-%m-%dT%H%M")
	tmp_folder=/tmp/restore_test_${datetime}

Shemeikka / fizzbuzz.exs

Created October 30, 2019 17:49

Simple FizzBuzz example using Elixir

	defmodule FizzBuzz do
	defguard is_fizz(value) when is_integer(value) and rem(value, 3) == 0
	defguard is_buzz(value) when is_integer(value) and rem(value, 5) == 0

	def run(val) do
	1..val
	\|> Enum.each(fn val -> word(val) \|> IO.inspect() end)
	end

	defp word(val) when is_fizz(val) and is_buzz(val), do: "fizzbuzz"

Shemeikka / queue_test.py

Created November 22, 2017 16:36

Small benchmarks for Python queues

	from collections import deque
	import Queue
	import time
	import gevent.queue


	def queue_test(n):
	q = Queue.Queue()

	start = time.time()

Shemeikka / filebeat.log

Created October 3, 2017 11:58

Filebeat 6.0.0-beta2 fatal error log

	sh-4.2# e ./filebeat
	fatal error: concurrent map read and map write

	goroutine 392 [running]:
	runtime.throw(0x160e97d, 0x21)
	/usr/local/go/src/runtime/panic.go:596 +0x95 fp=0xc4206f88f0 sp=0xc4206f88d0
	runtime.mapaccess1_faststr(0x14ad120, 0xc42013fc50, 0xc4202866fb, 0x40, 0x0)
	/usr/local/go/src/runtime/hashmap_fast.go:217 +0x4cf fp=0xc4206f8950 sp=0xc4206f88f0
	github.com/elastic/beats/libbeat/processors/add_docker_metadata.(*watcher).Container(0xc42013fc80, 0xc4202866fb, 0x40, 0x1460d60)
	/go/src/github.com/elastic/beats/libbeat/processors/add_docker_metadata/watcher.go:88 +0x4f fp=0xc4206f8988 sp=0xc4206f8950

Shemeikka / quota.yaml

Created March 10, 2017 16:33

Kubernetes resource quota

	apiVersion: v1
	kind: ResourceQuota
	metadata:
	name: khightower-compute-resources
	namespace: khightower
	spec:
	hard:
	services: "5"
	pods: "5"
	requests.cpu: "2"

Shemeikka / sns.py

Last active February 25, 2017 14:05

Example on how to work with AWS SNS with Boto3. This requires that you have set AWS credentials to your ~/.aws/credentials and the default region in ~/.aws/config

Shemeikka / links.txt

Last active February 18, 2017 15:02

Youtube channels - Dev stuff

	- Codegram Technologies
	- Full Stack Fest
	- https://www.youtube.com/channel/UCwoOpKfkyCQHW562hXXQAGg

	- My Code School
	- https://www.youtube.com/user/mycodeschool/playlists

Shemeikka / gist:7d6f37bc704b04cbbc5c6e33e39c748b

Created January 25, 2017 17:21

Description of how to use data volumes and stuff..

	# https://github.com/docker/docker/issues/30441#issuecomment-275124802

	You can still use the same volume for two services. If I understand correctly, you have a separate image holding the data, purely for propagating the volume? Say that that image is named mydataimage, you can do something like this;

	version: "3.0"

	services:
	init:
	image: mydataimage
	volumes:

Shemeikka / gist:11f196884212dc650e828c2f71c4bddf

Created November 8, 2016 18:36

Elixir Genserver callbacks and return values

	# GenServer callbacks and return values

	## init(args)

	{:ok, state}
	{:ok, state, timeout}
	:ignore
	{:stop, reason}

	## handle_call(msg, {from, ref}, state)

Shemeikka / bmi.elm

Last active September 25, 2016 09:43

Simple BMI calculator written in Elm

	import Html exposing (..)
	import Html.App exposing (beginnerProgram)
	import Html.Attributes as HA exposing (..)
	import Html.Events exposing (onClick, onInput)
	import String

	main =
	beginnerProgram { model = model, view = view, update = update }

	import boto3

	client = boto3.client('sns')

	response = client.publish(
	TopicArn='<your topic arn>',
	Message='<your message>'
	)
	print("Response: {}".format(response))