Luis Jesús Díaz drconopoima

What's Cool

Encrypted root partition
- AES-256 bit cipher
- Argon2id variant for PBKDF
- Sha3-512 bit hash
rEFInd bootloader
- With dreary theme
- Optimal Settings (optimized for aesthetics, and boot time)
Boot into backups thanks to refind-btrfs

3 Virtual Machines Kubernetes cluster

Dependencies

You should install VirtualBox and Vagrant before you start.

Creating the cluster

You should create a Vagrantfile in an empty directory with the following content:

What's Cool

Encrypted root partition
- AES-256 bit cipher
- Argon2id variant for PBKDF
- Sha3-512 bit hash
rEFInd bootloader
- With dreary theme
- Optimal Settings (optimized for aesthetics, and boot time)
Boot into backups thanks to refind-btrfs

Signing VirtualBox Kernel Modules

These are the steps I followed enable VirtualBox on my laptop without disabling UEFI Secure Boot. They're nearly identical to the process described on [Øyvind Stegard's blog][blog], save for a few key details. The images here are borrowed from the [Systemtap UEFI Secure Boot Wiki][systemtap].

Install the VirtualBox package (this might be different for your platform).

src='https://download.virtualbox.org/virtualbox/rpm/fedora/virtualbox.repo'

	#!/usr/bin/env bash

	wget --no-check-certificate https://github.com/teddysun/across/raw/master/bbr.sh && chmod +x bbr.sh && ./bbr.sh


	## Add sysctl config
	echo 'fs.file-max = 51200
	net.core.rmem_max = 67108864
	net.core.wmem_max = 67108864
	net.core.netdev_max_backlog = 250000

	"""Demo of logging in a multi-processing context.

	Based on the Python "Logging Cookbook":
	https://docs.python.org/3/howto/logging-cookbook.html#logging-to-a-single-file-from-multiple-processes

	Note on `QueueListener`:

	The main difference between the Cookbook example and this demo is that I use
	the `QueueListener` convenience class, whereas they write a bespoke
	`listener_process` function which does more or less the same thing as

	"""
	Normally to create a virtual environment, we can do so from the command prompt with::

	C:\Users\me>python -m venv venv

	This doesn't work when we are within a virtual environment though::

	(venv) C:Users\me>python -m venv venv2
	Error: Command '['C:\\Users\\me\\venv2\\Scripts\\python.exe', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 3221226505.

	#!/bin/bash

	# dochroot.sh: set up and enter chroot environment for a Gentoo install
	#
	# Copyright 2019 Stephen Cavilia <[email protected]>
	#
	# This program is free software: you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation, either version 3 of the License, or
	# (at your option) any later version.

	set -o pipefail
	set -o errtrace
	set -o nounset
	set -o errexit
	set -a

	# Scratch mount is the device which will be mounted on /mnt
	# and generally used for logs, core dumps etc.
	if ! $(mount \| grep -q /mnt) ; then
	# Detected NVME drives

	/dev/sdb1 /data/hdp01 xfs defaults,noatime,nodiratime,nobarrier 1 2
	/dev/sdc1 /data/hdp02 xfs defaults,noatime,nodiratime,nobarrier 1 2