shizonic shizonic

Description

Some example commands for openshift/kubernetes, replace the oc with kubectl or otherwise

get all pods from all namespaces comma separated with namespace, pod name, container name, container image, pod status

oc get pods --all-namespaces -o go-template='{{range .items}}{{$status := .status.phase}}{{$namespace := .metadata.namespace}}{{$podname := .metadata.name}}{{range .spec.containers}}{{$namespace}}{{","}}{{$podname}}{{","}}{{.name}}{{","}}{{.image}}{{","}}{{$status}}{{"\n"}}{{end}}{{end}}'

get all pods from all namespaces comma separated with namespace, pod name, scc

oc get pods --all-namespaces -o go-template='{{range .items}}{{.metadata.namespace}},{{.metadata.name}},{{range $key, $element := .metadata.annotations}}{{if eq $key "openshift.io/scc"}}{{$element}}{{end}}{{end}}{{"\n"}}{{end}}'

get all sccs with attrubite .allowPrivilegedContainer true

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Void Linux installation guide!

Live image

Logging in

User is anon and password is voidlinux. The root user is root and has the same password. This document implies you're using the root user, so no sudo is used until the main user is created and used.

	#!/bin/sh

	set -ex

	PATH=/bin:/sbin:/usr/bin:/usr/sbin
	KEYMAP="us us"
	HOST=alpine
	USER=anon
	ROOT_FS=ext4
	BOOT_FS=ext4

	#!/bin/sh

	die() {
	printf '\033[1;31m!>\033[m %s.\n' "$@" >&2
	exit 1
	}

	log() {
	printf '\033[1;32m=>\033[m %s.\n' "$@"
	}

	#!/bin/sh
	# nous,2019-2020

	# How to use
	# wget https://tiny.cc/fucksystemd
	# chmod +x fucksystemd
	# sudo ./fucksystemd

	# Test Arch ISO installation:
	# cfdisk /dev/sda

	# Run skype in a container, requires pulseaudio
	# (but I have a container for that)
	#
	# docker run -v /tmp/.X11-unix:/tmp/.X11-unix \
	# -v $HOME/.Skype:/home/skype/.Skype \
	# -e DISPLAY=unix$DISPLAY \
	# --link pulseaudio:pulseaudio \
	# -e PULSE_SERVER=pulseaudio \
	# --device /dev/video0 \
	# --name skype \

	#!/usr/bin/env bash

	# WARNING!!
	# This will obliterate all the data in your partition!! (not actually true, but act as if it was)
	# Do NOT execute this script if you don't fully understand it!

	# a few vars
	amount_of_swap=$( free --si -g \| grep Mem: \| gawk '{ print $2 + 1}' )

	# create partitions

	#!/bin/sh

	# do something ...

	exec sv stop SERVICE_NAME