christopher-hopper

If RabbitMQ wont start and show the following in the startup logs:

# cat  /var/log/rabbitmq/startup_log


BOOT FAILED
===========

warmans

#! /usr/bin/python

import sys, re

# To use run 
#
# $ nodetool status | ./ntcolour.py
# 
# or to refresh forever use:
#

orls

1

    std::set phoenix;
    phoenix.key_comp();

http://www.imdb.com/title/tt0373889

2

hummus

wget http://stedolan.github.io/jq/download/linux64/jq 
aws ec2 describe-instances --filters "Name=tag:Name,Values=$NAME" \
  "Name=instance-state-name,Values=running" \
  |  jq -r \
  ".Reservations[] | .Instances[] | .InstanceId" \

aws ec2 describe-volumes --filters \
  "Name=status,Values=available" \
  | jq -r ".Volumes[] | .VolumeId" \

glamp

def camel_to_snake(column_name):
    """
    converts a string that is camelCase into snake_case
    Example:
        print camel_to_snake("javaLovesCamelCase")
        > java_loves_camel_case
    See Also:
        http://stackoverflow.com/questions/1175208/elegant-python-function-to-convert-camelcase-to-camel-case
    """
    s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', column_name)

timyates

export JAVA7_HOME=`/usr/libexec/java_home -v 1.7*`
export JAVA8_HOME=`/usr/libexec/java_home -v 1.8*`

function jdk7 {
    export JAVA_HOME=$JAVA7_HOME
    set_path
    echo "Using Java 7 $JAVA_HOME"
}

function jdk8 {

miketheman

Adding 2 nodes to an existing 3-node ZooKeeper ensemble without losing the Quorum

Since many deployments may start out with 3 nodes and so little is known about how to grow a cluster from 3 memebrs to 5 members without losing the existing Quorum, here is an example of how this might be achieved.

In this example, all 5 nodes will be running on the same Vagrant host for the purpose of illustration, running on distinct configurations (ports and data directories) without the actual load of clients.

YMMV. Caveat usufructuarius.

Step 1: Have a healthy 3-node ensemble

cdimartino

#!/bin/sh

# This will allow you to rebalance the Cassandra ring
#
# $ ./rebalance.sh file_of_hosts

RING_SIZE=$(echo "2^127" | bc)
HOSTS=$(cat $1 | sed 'N;s/\n/ /')
HOST_NUM=$(echo $HOSTS | wc -w)
INDEX=0

jtimberman

require 'chefspec'

describe 'java::default' do
  let (:chef_run) { ChefSpec::ChefRunner.new.converge('java::default') }
  it 'should include the openjdk recipe by default' do
    chef_run.should include_recipe 'java::openjdk'
  end

  context 'windows' do
    let(:chef_run) do

MrDrews

[

    {
        "class": "sidebar_container",
        // $base02:    #073642         
        "layer0.tint": [7,54,66],
        "layer0.opacity": 1.0,
        "layer0.draw_center": false,
        "layer0.inner_margin": [0, 0, 1, 0],
        "content_margin": [0, 0, 1, 0]