avoidik

Introduction

This is how you would create a livable FreeBSD instance on EC2 by hand. The smart thing to do is to automate most of these actions. But I do it this way so you can see and understand all the different techniques. I want to create FreeBSD instances in EC2 and I want some of the management benefits that come from native AWS technologies like CloudWatch. It can be done, but it takes a bit of extra work because FreeBSD isn't Linux, and AWS doesn't directly support FreeBSD.

Prepping in AWS land

Before we go far, we will want some things setup in AWS IAM and VPC. I assume you have already created a VPC, decided what network numbers you're going to use, created a subnet and so on. If you haven't done those basic things, you need to go do them. I also assume you've created an ssh key and uploaded it to your AWS account.

avoidik

            - name: CALICO_IPV4POOL_CIDR
              value: "172.16.0.0/16"
            - name: IP_AUTODETECTION_METHOD
              value: "interface=eth1"

avoidik

[Transport]
PingInterval=3
PingTimeout=10
CompressionLimit=384
EasyFindId=xxx
EasyFindPin=zzz
[General]
MainFrameWidth=640
MainFrameHeight=480
SSLClientCert=

avoidik

How to change DPI

Some applications do not properly handle fractional scaling after xrandr, in my case I'm using Mate environment

$ cat /etc/X11/Xsession.d/45xrandr-custom
if [ "x$DESKTOP_SESSION" = "xmate" ] || [ "x$XDG_SESSION_DESKTOP" = "xmate" ]; then
    /usr/bin/xrandr --output eDP-1 --scale 1.5x1.5 --brightness 0.7 --mode 1920x1080
fi

avoidik

There are multiple scheduling options available in Kubernetes:

1. Taints & tolerations - https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/
2. Affinity & anti-affinity - https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/
3. Setting nodeSelector & nodeName attributes - https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/
4. Pod topology spread constraint - https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/

avoidik

#!/bin/bash

curl -fsSLo weave-daemonset.yaml "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')&env.IPALLOC_RANGE=10.32.0.0/16"

avoidik

#!/bin/bash

flag_iptables=true
flag_dry_run=true

while getopts ":nf" arg; do
  case $arg in
    n) # Dry-run - does not preserve iptables rules.
      flag_dry_run=false
      ;;

avoidik

#Requires -RunAsAdministrator

function Uninstall-Pester ([switch]$All) {
    if ([IntPtr]::Size * 8 -ne 64) { throw "Run this script from 64bit PowerShell." }

    #Requires -RunAsAdministrator
    $pesterPaths = foreach ($programFiles in ($env:ProgramFiles, ${env:ProgramFiles(x86)})) {
        $path = "$programFiles\WindowsPowerShell\Modules\Pester"
        if ($null -ne $programFiles -and (Test-Path $path)) {
            if ($All) { 

avoidik

import base64
import boto3
import re
from botocore.signers import RequestSigner

def get_bearer_token(cluster_id, region):
    STS_TOKEN_EXPIRES_IN = 60
    session = boto3.session.Session()

    client = session.client('sts', region_name=region)

avoidik

INTERACTIVE_BASHPID_TIMER="/tmp/${USER}.START.$$"

PS0='$(echo $SECONDS > "$INTERACTIVE_BASHPID_TIMER")'

function _update_ps1() {
  local __ERRCODE=$?
  local __JOBS=$(jobs -p | wc -l)
  local __DURATION=0
  if [ -e $INTERACTIVE_BASHPID_TIMER ]; then
    local __END=$SECONDS