johnko

If your custom iso is not mounting, and your console is at an iPXE shell, you can:

initrd http://mfsbsd.vx.sk/files/iso/10/amd64/mfsbsd-se-10.1-RELEASE-amd64.iso

While the iso is downloading, vultr's iPXE does not include memdisk, so we have to upload it ourselves to another host.

Here's one I found public, though I wouldn't recommend using it: http://preseed.panticz.de/ipxe/memdisk

johnko

Installing FreeBSD on a USB drive with ZFS using bsdinstall unattended

I typically wrap all these commands into a shell script that I can reuse, but here they are in steps.

Please read through all the instructions before actually performing the commands, just to avoid any surprises

Requirements:

• careful typing and copy/paste skills
• USB drive (8 GB+ ?) Make sure you don't need anything on that drive

johnko

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

#First released as C++ program by Hiroyuki Tsutsumi as part of the free software suite “Beer”
#I thought porting it to Python could be both a challenge and useful

from sys import argv, exit, getsizeof
from struct import pack_into, unpack_from

def ceil4(n):

johnko

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/bootstrap.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

johnko

#!/bin/sh
# ssh-multi
# D.Kovalov
# Based on http://linuxpixies.blogspot.jp/2011/06/tmux-copy-mode-and-how-to-control.html
# Modified by johnko https://gist.github.com/johnko/a8481db6a83ec5ea2f37

# a script to ssh multiple servers over multiple tmux panes


starttmux() {

johnko

#/usr/bin/env bash
set -euo pipefail

exit 1

# Need the SystemAdministrator AWS SSO / IAM PermissionSet

for region in $(aws ec2 describe-regions --query 'Regions[].RegionName' --output text); do

    echo "* Region ${region}"

johnko

#! /usr/local/bin/bash
#
# Calomel.org 
#     https://calomel.org/zfs_health_check_script.html
#     FreeBSD 9.1 ZFS Health Check script 
#     zfs_health.sh @ Version 0.15

# Check health of ZFS volumes and drives. On any faults send email. In FreeBSD
# 10 there is supposed to be a ZFSd daemon to monitor the health of the ZFS
# pools. For now, in FreeBSD 9, we will make our own checks and run this script

johnko

Experiments with FreeBSD on Intel Compute Stick

Ingredients

Acquire an Intel Compute Stick with Atom CPU and 2GB of RAM, 32GB of storage.

The product code I got is BOXSTCK1A32WFC.

You'll also need:

johnko

# Ubuntu Server automated installation
# by Scott Lowe (scott.lowe@scottlowe.org)

d-i debian-installer/locale string en_US
d-i console-setup/ask_detect boolean false
d-i keyboard-configuration/layoutcode string us
d-i netcfg/choose_interface select eth0
d-i netcfg/get_hostname string hostname
d-i netcfg/get_domain string domain.com 
d-i netcfg/wireless_wep string

johnko

Free

Programming in general:

• https://www.khanacademy.org/
• https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/

Web-based programming:

• https://developer.mozilla.org/en-US/
• http://eloquentjavascript.net/

Some free content