Marc-Aurèle Brothier marcaurele

IPXE netboot

To boot a different OS from a Debian base image

To have a full disk encryption on a cloud VM (choose a size with enough RAM (2GB) and downscale after if needed):

Use the QEMU console to log on as root
apt-get install grub2 ipxe
reboot
Quickly select "Network boot" in GRUB menu

Keybase proof

I hereby claim:

I am marcaurele on github.
I am marcaurele (https://keybase.io/marcaurele) on keybase.
I have a public key ASArUJBLlTwIvzEndNg6lPo_-puVvn1F2amCdhpwn_7smgo

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Graceful shutdown of Management Server for Cloudstack

Idea

The goal is to provide a safe shutdown of a management server when running in cluster mode, so that the server stops processing new commands and waits for ongoing commands before being "ready to stop". Then the MS should be in a clean state for a shutdown. A little requirement is that the proxy in front of the management servers should have its route to the server going down turned off to avoid routing reconnection to the stopping server.

	#!/usr/bin/env python3

	# Author: Marc-Aurèle Brothier, Exoscale
	# June 2016
	# Requirements: cs, click

	import random
	import time

	from datetime import datetime, timedelta