asenchi

Deploys FreeBSD on a Hetzner cloud server

Prerequisites:

• A Hetzner Cloud API Token (Pass in via APIKEY)
• jq
• sshpass

Usage

Replace server_id variable with your hetzner server Id

asenchi

These snippets provide a foundation for starting and stopping supervision trees at runtime using feature flags (e.g. Launch Darkly).

Some things to note when adapting these snippets:

1. application.ex needs to be adapted into an existing application. The important part is that each child spec provided is compliant, and that there is a feature flag (ld_key) specified.
2. As written, if a feature flag fails for some reason, it defaults to starting all children. There is room for adaptation here as needed.
3. This implementation will still require a FeatureFlags module to be available that implements is_on?/2. Adjust as needed to accomodate your own feature flag setup.

asenchi

Make it real

Ideas are cheap. Make a prototype, sketch a CLI session, draw a wireframe. Discuss around concrete examples, not hand-waving abstractions. Don't say you did something, provide a URL that proves it.

Ship it

Nothing is real until it's being used by a real user. This doesn't mean you make a prototype in the morning and blog about it in the evening. It means you find one person you believe your product will help and try to get them to use it.

Do it with style

asenchi

defmodule K8s.Client do
  @moduledoc """
  This is a very naive k8s client.
  """
  alias K8s.Conf.RequestOptions
  require Logger

  def post(body, conf) do
    path = body_to_path(body, false)
    url = Path.join(conf.url, path)

asenchi

FROM postgres:9.6-alpine

LABEL version="9.6"
LABEL author="jpfuentes2@gmail.com"

RUN apk update && apk upgrade --available
RUN apk add build-base git postgresql-dev

ENV POSTGRES_VERSION=9.6

asenchi

#!/bin/bash
set -e
set -o pipefail

# Add user to k8s using service account, no RBAC (must create RBAC after this script)
if [[ -z "$1" ]] || [[ -z "$2" ]]; then
 echo "usage: $0 <service_account_name> <namespace>"
 exit 1
fi

asenchi

# Run me with:
#
#     $ nginx -p /path/to/this/file/ -c nginx.conf
#
# All requests are then routed to authenticated user's index, so
#
#    GET http://user:password@localhost/_search?q=*
#
# is rewritten to:
#

asenchi

# file name terraform/modules/aws_vpc/vpc.tf
# first create the VPC.
# Prefix resources with var.name so we can have many environments trivially

resource "aws_vpc" "mod" {
  cidr_block = "${var.cidr}"
  enable_dns_hostnames = "${var.enable_dns_hostnames}"
  enable_dns_support = "${var.enable_dns_support}"
  tags { 
    Name = "${var.env}_vpc"

asenchi

A collection of The Morning Paper posts relating to containers, operating systems etc.

In order of first appearance in The Morning Paper.

• On the duality of operating system structures
• Why threads are a bad idea
• Why events are a bad idea
• Unikernels: library operating systems for the cloud
• The scalable commutativity rule: designing scalable software for multicore processors
• Jitsu: just-in time summoning of unikernels

asenchi

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• I am asenchi on github.
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