Michael Lihs michaellihs

Docker Cheat Sheet

Testing with `goss` and `dgoss`

On the Mac

install goss

Get List of Jenkins Plugin Licenes

The following script provides you the licences of Jenkins plugins (e.g. for Open Source compliance checks) read from their pom.xml file on the respective Github repository.

Before using the script, you have to

replace your.jenkins.host.com with the domain of your Jenkins server
create a Jenkins API token for your user and put it into ~/.jenkins-api-token

DevOps Principles

Motivation: Assembly line

try to get product on the road as fast as possible
every delay costs money
try to identify and eliminate bottlenecks
KPI: lead time

Continuous Learning

https://twitter.com/an0xff - weekly cross-team meetings with 3 minute 'daily-style' intro round per person and 1-2 deep dive topics with 30-45min each where people present new things and discuss possibilities to apply/integrate them.
https://twitter.com/paolizq - Coding dojos to increase software craftsmanship and knowledge on programming tools.
- codingdojo.org/kata/ At the beginning you can start with simple katas. It also helps to have people with different skill levels and it is very important when pointing out errors or improvements to not be annoyed, impatient or condescending.
- Basically foster an environment of openness and point out that everyone is there to learn.
https://twitter.com/robert_we - Switching responsibility for components/microservices around a lot, incoming maintainer brings in his new ideas and learns from the implemented stuff while he refractors it.
- https://twitter.com/irnnr - +1, assign people to work on services they don’t know
https://twi

Jenkins CLI & Hashicorp Vault

Managing SSH authentication with Vault

Managing SSH keys with Vault requires 3 steps:

Setting up Vault
Setting up the host
Setting up the client / using the signed client keys

For a full documentation, see this HashiCorp Blog Post

Prerequisites

Glossary
Set up gcloud
Networking
Compute
Provisioning a CA and Generating TLS Certificates

Google Cloud Platform Fundamentals

Regions & Zones

Region equals a geograpic location
Zones divide regions into (physically) independent isolated sub parts
Some resources are
accessible only within one zone (e.g. VMs)

	# this configuration requires the vagrant-proxyconf plugin to be installed
	# vagrant plugin install vagrant-proxyconf

	if ENV["http_proxy"].nil?
	abort "\e[31mERROR: you have to set the $http_proxy environment variable\e[0m"
	end

	# (internal) name of Vagrant box
	box_name = "jenkins-agent-ansible"