thehar

How to install an older Docker version

These instructions are only tested on installations that use the Docker apt repository.

1. Remove the existing installation

   sudo apt-get remove docker-engine

2. List the available versions

thehar

kubectl get services                # List all services 
kubectl get pods                    # List all pods
kubectl get nodes -w                # Watch nodes continuously
kubectl version                     # Get version information
kubectl cluster-info                # Get cluster information
kubectl config view                 # Get the configuration
kubectl describe node <node>        # Output information about a node
kubectl get pods                         # List the current pods
kubectl describe pod <name>              # Describe pod <name>
kubectl get rc                           # List the replication controllers

thehar

brew cask install chef/chef/chefdk

CHEFDK="/opt/chefdk/embedded"
CHEFDK_USER="$HOME/.chefdk/gem/ruby/2.5.0"
RVM_GEMS="$HOME/.rvm/gems"
RVM_RUBIES="$HOME/.rvm/rubies"
RUBY_NAME="ext-chefdk-ruby"

mkdir -p $RVM_RUBIES/$RUBY_NAME
ln -s $CHEFDK/bin $RVM_RUBIES/$RUBY_NAME

thehar

import boto3
import http.client
import json
import logging
import os
from base64 import b64decode


conn = http.client.HTTPSConnection("api.codeship.com")
payload = "{}"

thehar

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

thehar

Using Git

Global Settings

Related Setup: https://gist.github.com/hofmannsven/6814278

Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/

thehar

Disclaimer: The following examples try to give an overview of the process followed in different scenarios. Some commands were actually written from memory. Some tools might exist simplifying all this. Furthermore, I'm no expert so if anyone ever reads this and knows any improvement, please let me know.

Case 1: Direct access to Pairing Station

Given that the Guest User can access the Pairing Station directly, either because the station is publicly available or because NAT port forwarding can be used, there's only one thing we need to do, give ssh access to the Guest User by adding his ssh public key to our Local User (pair) .ssh/authorized_keys file.

The local user would open up a tmux session with

tmux new-session -s pairing

thehar

      begin
        require 'ruby-shadow'
        user_pw = u['password']
      rescue LoadError
        user_pw = nil
      end

      # Create user object.
      # Do NOT try to manage null home directories.
      user u['id'] do

thehar

include Opscode::Aws::Ec2


#Auto locates and attached ebs devices based on the data bag they reside in. The following test cases need to be performed
# Create multiple resources with new node: PASS
#
# Re-attach multiple resources after a reboot: PASS
#
# Create resources across 2 runs.  First run creates first raid set, second run re-attaches then creates: PASS
# 

thehar

include Chef::Mixin::Command

action :create do
  size = new_resource.size
  volumes = new_resource.volumes.times.map{|i| (i == 0 ? "/dev/sdf" : "/dev/sdf#{i}") }
  setra = new_resource.blockdev_setra
  volume_group = new_resource.volume_group
  logical_volume = new_resource.name
  mdadm_device = new_resource.mdadm_device
  mount_point = new_resource.mount_point