mpontillo’s gists

mpontillo / example.py

Created February 10, 2017 21:47

Django temporary logging example

	import logging
	l = logging.getLogger('django.db.backends')
	l.setLevel(logging.DEBUG)
	l.addHandler(logging.StreamHandler())
	# Code to execute QuerySet goes here.
	l.setLevel(logging.INFO)

mpontillo / mirror.sh

Last active March 21, 2017 16:58

Example of how to create a container to mirror Trusty and Xenial (complete with boot images for MAAS).

	CONTAINER=mirror

	lxc launch ubuntu:x $CONTAINER

	# Wait for the container to come online.
	wait-for-systemd-container.sh $CONTAINER

	# Ensure packages are up to date and install dependencies.
	lxc exec $CONTAINER -- apt-get update
	lxc exec $CONTAINER -- apt-get dist-upgrade -yu

mpontillo / dmidecode_json.sh

Last active February 25, 2017 00:16

Shell script to grab the strings dmidecode supports and display them as JSON with jq

	#!/bin/bash

	# via http://git.savannah.nongnu.org/cgit/dmidecode.git/tree/dmiopt.c#n142
	DMI_STRINGS="
	bios-vendor
	bios-version
	bios-release-date
	system-manufacturer
	system-product-name
	system-version

mpontillo / dmi_dump.sh

Created February 24, 2017 22:51

	#!/bin/bash

	OUTFILE=/root/dmi.bin

	dmidecode -u --dump-bin $OUTFILE && (
	echo "-----BEGIN DMI DATA-----" ;
	base64 $OUTFILE
	echo "-----END DMI DATA-----"
	) \|\| (echo "Unable to read DMI information."; exit 0)

mpontillo / dump_hw_info.sh

Last active March 4, 2017 00:45

Gathers information about attached hardware and disks.

	#!/bin/bash -e

	# This script attempts to dump (non-personal) information about the current
	# hardware platform. It expects to be run on a modern Linux distribution
	# (such as Ubuntu).

	DMI_OUTFILE="$(mktemp)"

	function finish {
	rm -f "$DMI_OUTFILE"

mpontillo / virsh-start-and-wait-for-idle.sh

Last active March 3, 2017 21:58

Script to start a virtual machine using virsh, and sample its $pc register until it seems to be idle.

	#!/bin/bash -e

	# Check if we believe the VM has started after this number of samples.
	CHECK_EVERY=500

	# Consider the machine to be idle if MIN_IDLE_PCT% of sampled program counters
	# were identical after at least MIN_IDLE_SAMPLES.
	#
	MIN_IDLE_SAMPLES=450
	MIN_IDLE_PCT=60

mpontillo / maas_allocated_ip_addresses.sql

Last active July 17, 2017 21:46

List IP addresses allocated in MAAS.

	SELECT
	sip.ip,
	CASE
	WHEN sip.alloc_type = 0 THEN 'AUTO'
	WHEN sip.alloc_type = 1 THEN 'STICKY'
	WHEN sip.alloc_type = 4 THEN 'USER_RESERVED'
	WHEN sip.alloc_type = 5 THEN 'DHCP'
	WHEN sip.alloc_type = 6 THEN 'DISCOVERED'
	ELSE CAST(sip.alloc_type as CHAR)
	END "alloc_type",

mpontillo / maas-cli-commands.sh

Last active March 19, 2025 12:45

MAAS jq tricks and how to move interfaces between fabrics (via changing the interface's VLAN)

	maas refresh

	profile=$(maas list \| head -1 \| awk '{ print $1 }')

	# This generates a single JSON object.
	maas $PROFILE machines read \| jq '[.[] \| {hostname:.hostname, system_id: .system_id, status:.status}]'
	...

	maas $PROFILE machines read \| jq '.[] \| {hostname:.hostname, system_id: .system_id, status:.status}' --compact-output
	{"hostname":"pxe-bond1","system_id":"xrey6h","status":4}

mpontillo / clear_unknown_interfaces.py

Created March 15, 2017 17:21

How to clear out unknown interfaces in MAAS

	# sudo maas-region shell
	>>> from maasserver.models import Interface
	>>> unknown_interfaces = Interface.objects.filter(type='unknown')
	>>> unknown_interfaces.delete()
	>>> quit()

mpontillo / check-apt-signatures.sh

Created March 22, 2017 18:48

Check the signature on each downloaded apt Release file.

	#!/bin/bash

	# Import apt keys into GPG keyring for ease of use.
	apt-key list \| grep ^/ \| xargs -n1 gpg --import > /dev/null 2>&1

	bad=0

	# Check the signature on each apt list.
	for file in /var/lib/apt/lists/{_Release,_InRelease}; do
	gpg --verify $file > /dev/null 2>&1

Mike Pontillo mpontillo