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layout	title	date	categories
post	Apple Silicon and Virtual Machines: Beating the 2 VM Limit	2023-08-08 07:00:00 -0600	macOS

• macOS Internals Deep Dive
• Building a Development Kernel Collection
• Configuring our Mac to boot the Development Kernel Collection

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• macOS, Zsh, and more
  • Zsh initializations
  • Zsh way of $PATH
  • the special macOS
  • /usr/libexec/path_helper
    • What is it?
    • What does it do?
    • What does it break?
  • Situation explained

• The .*shrc file

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Introduction

• C-a == Ctrl-a
• M-a == Alt-a

General

:q        close
:w        write/saves
:wa[!]    write/save all windows [force]
:wq       write/save and close

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# ./lsiommu 
IOMMU Group 0 00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge [1022:1482]
IOMMU Group 10 00:08.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge [1022:1482]
IOMMU Group 11 00:08.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B] [1022:1484]
IOMMU Group 12 00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:790b] (rev 61)
IOMMU Group 12 00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:790e] (rev 51)
IOMMU Group 13 00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 0 [1022:1440]
IOMMU Group 13 00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 1 [1022:1441]
IOMMU Group 13 00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Da

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High Availability Cluster Cheatsheet

Corosync

corosync-keygen

scp /etc/corosync/corosync.conf root@node02:/etc/corosync/

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Notes

Manual Installation

sudo su -

apt-get update -y && apt-get upgrade -qqy
snap refresh

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#cloud-config
bootcmd:
  - |
    /bin/bash <<-'EOS'
    #!/bin/bash
    exec > >(tee /root/log.txt)
    exec 2>&1
    set -x
    set -e
    if [ -e /new ]; then

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#!/bin/bash
function process_script_request {
  if [[ $# -eq 0 ]]; then
    show_help
  else
    case $1 in
      help) show_help;;
      back) serve_backend;;
      back:prod) serve_backend_production;;
      front) update_and_watch_assets;;

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#!/bin/bash

### WARNING: This is a WIP ###

### ISO ###
#
# https://www.balena.io/etcher/
# https://www.ventoy.net/en/index.html
# 
# Take a look at ublue-os/isogenerator on GitHub, which is an action

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#!/bin/bash

# https://charm.sh/blog/self-hosted-soft-serve/
# https://github.com/charmbracelet/soft-serve/blob/main/README.md
# https://github.com/charmbracelet/soft-serve
# https://github.com/charmbracelet/soft-serve-action

sudo dnf install -y curl git git-lfs

# Fedora/RHEL