mcastelino

Connecting a veth device to tap

• veth device from CNI/CNM plugin: eth0
• tap device that connects to the VM: tap0

Redirecting traffic between the two devices

tc qdisc add dev eth0 ingress
tc filter add dev eth0 parent ffff: protocol all u32 match u8 0 0 action mirred egress redirect dev tap0

moul

#!/usr/bin/expect
# Usage: ipxe.expect "SCW_RUN_ARGS" ["IPXE LINE" ["IPXE LINE" [...]]]
#
# Examples:
#        ipxe.expect \
#            "--commercial-type=VC1 50G" \
#            "chain --autofree http://boot.netboot.xyz/menu.ipxe"
#
#        ipxe.expect \
#            "50G" \

nachokb

1. create a scaleway instance, let's call it centos-builder
2. Ubuntu Trusty on a C2S is ok
3. make sure to add an additional 50gb volume
4. upload centos-root.fsa to centos-builder
5. install FSArchiver
6. apt-get install fsarchiver
7. extract it on /dev/nbd1
8. fsarchiver -v restfs centos-root.fsa id=0,dest=/dev/nbd1
9. shut the machine down from Scaleway's web UI

eob

from scapy.all import *
def arp_display(pkt):
  if pkt[ARP].op == 1: #who-has (request)
    if pkt[ARP].psrc == '0.0.0.0': # ARP Probe
      if pkt[ARP].hwsrc == '74:75:48:5f:99:30': # Huggies
        print "Pushed Huggies"
      elif pkt[ARP].hwsrc == '10:ae:60:00:4d:f3': # Elements
        print "Pushed Elements"
      else:
        print "ARP Probe from unknown device: " + pkt[ARP].hwsrc

chanks

Turning PostgreSQL into a queue serving 10,000 jobs per second

RDBMS-based job queues have been criticized recently for being unable to handle heavy loads. And they deserve it, to some extent, because the queries used to safely lock a job have been pretty hairy. SELECT FOR UPDATE followed by an UPDATE works fine at first, but then you add more workers, and each is trying to SELECT FOR UPDATE the same row (and maybe throwing NOWAIT in there, then catching the errors and retrying), and things slow down.

On top of that, they have to actually update the row to mark it as locked, so the rest of your workers are sitting there waiting while one of them propagates its lock to disk (and the disks of however many servers you're replicating to). QueueClassic got some mileage out of the novel idea of randomly picking a row near the front of the queue to lock, but I can't still seem to get more than an an extra few hundred jobs per second out of it under heavy load.

So, many developers have started going straight t

melekes

Yet another Google Calendar Dashing widget

Description

Dashing widget to display first two coming-up Google Calendar events.

Basically, you do not need more than two events on your dashboard, but it can be easily extended to the neighboring cells and show, say, 4 events instead of 2.

adamloving

0-mail.com
0815.ru
0clickemail.com
0wnd.net
0wnd.org
10minutemail.com
20minutemail.com
2prong.com
30minutemail.com
3d-painting.com

nsanta

#app is the variable that contains the module “AwesomeApp”

app.controller ‘SessionCtrl’, ($scope, $location, Session) →
  $scope.login = →
    Session.save $scope.session , (response) →
      $location.path “/dashboard”

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

fabiant7t

import logging
import math
import mimetypes
from multiprocessing import Pool
import os

from boto.s3.connection import S3Connection
from filechunkio import FileChunkIO