Keyan Pishdadian keyan

It is pretty confusing how to add custom root certificates to Python's trusted cert list as it doesn't use system certs. Instead I just disabled verification entirely. Note this is for local development only and SHOULD NOT BE USED IN PRODUCTION:

$ export PYTHONHTTPSVERIFY=0

This is helpful for capturing and inspecting outbound packets using Charles proxy or a similar tool.

Recently I have had to deal with Salt configuration. I am doing product work so I didn't want to focus too much on deeply grasping Salt, but instead knowing the terminology equivalents to Chef/Puppet which I am comfortable with.

Salt	Chef	Puppet
state	resource	resource
states	recipes	manifests
formula*	cookbook	module
pillars	databags	hiera
grains	ohai	facter

Installation

Halyard must be run on Ubuntu 14.04 (Trusty), you will likely use a VM to run it:

$ vagrant init ubuntu/trusty64; vagrant up --provider virtualbox

Sync your local kubeconfig with the guest VM by adding the following line to your newly created Vagrantfile:

Checklist for offline etcd v2 API -> v3 API

Adapted from https://coreos.com/etcd/docs/latest/op-guide/v2-migration.html#migrate-data

Note that this strategy results in kube-apiserver downtime, but this should not affect the state of the cluster, it will only prevent changes during the migration

Ensure there is no v3 data in etcd as this will be overwritten during the migration, verify that the output of the following command is 0:

ETCDCTL_API=3 etcdctl get "" --from-key --keys-only --limit 1 | wc -l

Installation

Halyard must be run on Ubuntu 14.04 (Trusty), you will likely use a VM to run it:

$ vagrant init ubuntu/trusty64; vagrant up --provider virtualbox

Sync your local kubeconfig with the guest VM by adding the following line to your newly created Vagrantfile:

	"""
	A small helper script for quickly parsing agency GTFS-RT feeds for debugging.
	Usage:
	$ service_venv python3 parse_gtfs_rt_feed.py --help
	"""
	import argparse

	import requests
	from google.transit import gtfs_realtime_pb2

	def nested_map(obj: object, func, target_class) -> Any:
	"""
	Accepts any object type and calls .func() on any nested fields of the specified class.
	"""
	def _nested_map(obj: object) -> None:
	"""
	Traverse all object fields and list items, calling func when possible.
	"""
	# Objects without __dict__ cannot have vars() called
	if not hasattr(obj, '__dict__'):

	"""
	A "fair lock" is a lock which guarantees threads are given access in
	the order that they requested it. The whole idea here is just to play
	with the concurrency control ideas, because Python's Queue
	implementation is already threadsafe, therefore acheiving the same
	behavior as the FIFO lock below.
	"""
	import threading

	#!/usr/bin/python
	"""
	This script searches the git repo looking for TODO messages, determines the
	author of the line, then emails that author asking them to repair the issue.

	It is intended to be run at a regular interval on a CI server or cron-job
	server. By changing the `SEARCH_STRING` the script can be easily adapted to
	trigger on any undesired code.

	Usage:

	# This demonstrates that, when using async/await, a crash in the task will crash the caller
	defmodule Tasker do
	def good(message) do
	IO.puts message
	end

	def bad(message) do
	IO.puts message
	raise "I'm BAD!"
	end