Dave Gallant davegallant

Requirements

Encrypt everthing including /boot and /root
Enter password once
Support UEFI

Installation media setup

Download NixOS minimal iso and copy to USB stick. For example on Mac OSX

$ diskutil list
$ diskutil unmountDisk /dev/disk1 # Make sure you got right device

List all Git repository objects by size

Summary
Example

Summary

Bash script which will:

Iterate all commits made within a Git repository.

Using py.test is great and the support for test fixtures is pretty awesome. However, in order to share your fixtures across your entire module, py.test suggests you define all your fixtures within one single conftest.py file. This is impractical if you have a large quantity of fixtures -- for better organization and readibility, you would much rather define your fixtures across multiple, well-named files. But how do you do that? ...No one on the internet seemed to know.

Turns out, however, you can define fixtures in individual files like this:

tests/fixtures/add.py

import pytest

@pytest.fixture

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

Installation of NixOS with encrypted root

These are my notes on instaling NixOS 16.03 on a Lenovo ThinkPad X1 Carbon (4th generation) with an encrypted root file system using UEFI.

Most of this is scrambled from the following pages:

	"""
	aiohttp shooting
	"""
	import os
	import asyncio
	import aiohttp
	import time


	url = "https://example/isalive"

	#/usr/bin/python3
	""" Demonstration of logging feature for a Flask App. """

	from logging.handlers import RotatingFileHandler
	from flask import Flask, request, jsonify
	from time import strftime

	__author__ = "@ivanleoncz"

	import logging

	# Add this snippet to the top of your playbook.
	# It will install python2 if missing (but checks first so no expensive repeated apt updates)
	# [email protected]

	- hosts: all
	gather_facts: False

	tasks:
	- name: install python 2
	raw: test -e /usr/bin/python \|\| (apt -y update && apt install -y python-minimal)

	# Dockerizing MongoDB: 3.1 Dockerfile for building MongoDB 3.1 images
	# Based on centos:centos7, installs MongoDB

	FROM centos:centos7

	MAINTAINER Jayaram Pradhan <[email protected]>

	# Set up mongodb yum repo entry
	# https://www.liquidweb.com/kb/how-to-install-mongodb-on-centos-6/
	RUN echo -e "\

	#!/usr/bin/python

	import os
	import sys
	import boto3

	# get an access token, local (from) directory, and S3 (to) directory
	# from the command-line
	local_directory, bucket, destination = sys.argv[1:4]