John Wood kolonuk

Shrinking XenServer VDI VM Disk

XenServer doesn't allow us to do this kinda shrinking so we better recreate the vm copying all the files and recreating grub (boot) files.

1. Prepare the new disk

Create a Virtual Disk with the final desired size (eg our running vm disk has currently 100G and we want to shrinkg it to 80G so this new disk is gonna be 80G)
Attach the new disk to the running VM. (For this we'll need to shutdown the vm for a brief moment and power up it back again)
Under the VM terminal we format the new disk:

fdisk /dev/xvdb #(n, p, ...) DON'T FORGET TO CREATE THE SWAPP PARTITION!!!
mkfs.ext4 /dev/xvdb1

How to remote access to phpMyAdmin on Bitnami Redmine Stack

Bitnami Redmine Stack の phpMyAdmin にリモート端末からアクセスする方法です。

Environment

Debian jessie
bitnami-redmine-3.1.0-0-linux-x64

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

	version: "3"
	services:
	vpn:
	image: qmcgaw/gluetun
	container_name: vpn
	cap_add:
	- NET_ADMIN
	ports:
	- 8888:8888/tcp # HTTP proxy
	- 8388:8388/tcp # Shadowsocks


	get_latest_release() {
	curl --silent "https://api.github.com/repos/$1/releases/latest" \| # Get latest release from GitHub api
	grep '"tag_name":' \| # Get tag line
	sed -E 's/."([^"]+)"./\1/' # Pluck JSON value
	}

	# Usage
	# $ get_latest_release "creationix/nvm"
	# v0.31.4

	#!/usr/bin/env python

	# Quick script to check your Dell asset's warranty status
	# Just drop your service tag as parameters for the script and go.

	import sys
	import requests

	APIKEY = 'd676cf6e1e0ceb8fd14e8cb69acd812d'
	URL = 'https://api.dell.com/support/v2/assetinfo/warranty/tags.json?svctags={0}&apikey=' + APIKEY

	#! /usr/bin/env python3

	import xml.etree.ElementTree as ET
	import sys
	import base64
	import os
	PREFIX="data:image/png;base64,"
	ATTR="{http://www.w3.org/1999/xlink}href"
	DEFAULT_NS="http://www.w3.org/2000/svg"
	with open(sys.argv[1]) as f: