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Sebastian Korfmann skorfmann

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@skorfmann
skorfmann / Readme.md
Last active November 27, 2023 00:39
Private Api Gateway in CDK.

Private API Gateway with the AWS CDK

  • Lambda
  • Private Api Gateway
  • VPC Endpoint

NB: In order to access the Api Gateway through the public DNS of the VPC endpoint, a curl request has to have the api id as header. See also here

curl -i -H "x-apigw-api-id: " https://vpce-.execute-api..vpce.amazonaws.com/
@skorfmann
skorfmann / _AWS_SSM_SSH_Tunnel.md
Last active October 20, 2023 01:02

EC2 Instance Connect meets AWS Session Manager via SSH

Both things have been introduced recently, and let you access even private ec2 instances

  1. Without VPN
  2. No open SSH port
  3. Authentication / Authorization is fully delegated to IAM
# Assumes valid AWS Credentials in ENV
@skorfmann
skorfmann / staging.rake
Created September 15, 2015 21:42
require 'dnsimple'
require 'platform-api'
namespace :staging do
desc "create subdomain DNS record for Heroku review app"
task :publish_dns do
heroku_app_name = ENV['HEROKU_APP_NAME']
heroku_app_name =~ /.*(pr-\d+)/
subdomain = $1
@skorfmann
skorfmann / shared_examples_before_filter.rb
Created March 5, 2015 21:29
shared_examples 'included before filter' do |expected_filter, actions|
controller do
skip_filter *_process_action_callbacks.map(&:filter).reject {|filter| filter == expected_filter }
actions.each do |action|
define_method(action) do
render nothing: true
end
end
end
@skorfmann
skorfmann / aliases.sh
Created July 4, 2014 12:57
alias rs='rails server'
alias rc='rails console'
alias rg='rails generate'
alias r='ruby'
alias be='bundle exec'
alias gst='git status' # Show the status
alias gl='git pull --rebase' # Pull rebase
alias gp='git push' # Push
alias gu='git up' # Push
@skorfmann
skorfmann / coreos-references.md
Last active August 29, 2015 14:01
@skorfmann
skorfmann / reset_etcd_disocovery.md
Last active June 15, 2019 08:36

Howto Reset etcd discovery

Every time my test cluster is going down, I was struggeling with etcd autodiscovery failing. This looks probably familiar to you:

The Problem

systemd[1]: Starting etcd...
systemd[1]: Started etcd.
etcd[3066]: [etcd] Apr  9 08:31:42.512 INFO      | Discovery via https://discovery.etcd.io using prefix /<TOKEN>.
@skorfmann
skorfmann / Gemfile
Created April 9, 2014 06:39
A super simple Sinatra API to expose the status of a unit / job within a CoreOS cluster.
source "https://rubygems.org"
gem 'sinatra'
gem 'etcd'
group :development do
gem 'rake'
gem 'rspec'
gem 'rack-test'
gem 'shotgun'
@skorfmann
skorfmann / speaker.md
Created April 5, 2014 11:24
@skorfmann
skorfmann / speaker.md
Last active August 29, 2015 13:57