RafPe

Server 2 sockets,6 cores each, 2.4ghz

# Set ixgbe options
# Limit RSS queues to the number of physical cores per cpu
# Disable offload
# When you change this, you need to run the command and reboot for it to take.
echo "options ixgbe LRO=0,0 MQ=1,1 RSS=6,6 VMDQ=0,0 vxlan_rx=0,0" > /etc/modprobe.d/ixgbe.conf

# Shut down HT cores
for i in $(seq 1 2 23); do

SmartFinn

OpenVPN Server and certificate management on MikroTik

Contents

• Setup OpenVPN server and generate certificates
• Add a new user
• Setup OpenVPN client
• Decrypt private key to avoid password asking (optional)
• Delete a user and revoke his certificate
• Revert OpenVPN server configuration on MikroTik

aroragagan

#!/bin/bash
##################################################################################
#   Author: Gagandeep Arora
#   Date: 01-Oct-2014
# Purpose: To sync the rbds using incremenatl snapshots from production ceph cluster
# 	   	   to backup ceph cluster
##################################################################################
mirrorPool() { 
    #list all images in the pool
    IMAGES=`$SOURCERBDCMD ls $SOURCEPOOL` 

kizbitz

#!/usr/bin/env bash

# Installs/Configures:
#  - Docker
#  - Docker Registy Container with self-signed cert
#
# Tested on Ubuntu 14.04.1

# Must be executed with elevated privilages
if [ "$(id -u)" != "0" ]; then

hsiboy

/*
                      d8888  .d8888b.  888b    888             
                     d88888 d88P  Y88b 8888b   888             
                    d88P888 888    888 88888b  888             
      .d8888b      d88P 888 888        888Y88b 888             
      88K         d88P  888 888        888 Y88b888             
      "Y8888b.   d88P   888 888    888 888  Y88888             
           X88  d8888888888 Y88b  d88P 888   Y8888             
       88888P' d88P     888  "Y8888P"  888    Y888             
                                                               

shamil

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

jeromer

# LICENSE: public domain

def calculate_initial_compass_bearing(pointA, pointB):
    """
    Calculates the bearing between two points.

    The formulae used is the following:
        θ = atan2(sin(Δlong).cos(lat2),
                  cos(lat1).sin(lat2) − sin(lat1).cos(lat2).cos(Δlong))