byteshiva

How to install PhantomJS on Ubuntu

Version: 1.9.7

Platform: x86_64

First, install or update to the latest system software.

sudo apt-get update

byteshiva

#!/usr/bin/env bash

sudo locale-gen en_US.UTF-8
sudo update-locale LANG=en_US.UTF-8
sudo update-locale LC_ALL=en_US.UTF-8

sudo apt-get update
sudo apt-get install -y build-essential git curl libxslt1-dev libxml2-dev libssl-dev

# postgres

byteshiva

FROM ubuntu

RUN dpkg-divert --local --rename --add /sbin/initctl
RUN ln -s /bin/true /sbin/initctl

RUN echo "deb http://archive.ubuntu.com/ubuntu precise main universe" > /etc/apt/sources.list
RUN apt-get update
RUN apt-get upgrade -y

RUN apt-get -y install mysql-client mysql-server

byteshiva

# -*- mode: ruby -*-
# vi: set ft=ruby :

=begin
ModernIE VMs

config.vm.box = "modernIE/vista-ie7"
config.vm.box = "modernIE/w7-ie8"
config.vm.box = "modernIE/w7-ie9"
config.vm.box = "modernIE/w7-ie10"

byteshiva

-- @desc:   Split a ZSET in two via round-robin
-- @usage:  redis-cli eval "$(cat ZSPLIT)" 2 <originalZset> <newZset>
-- @return: list of moved members

local function ZSPLIT(zset1, zset2)
  local zset1size = redis.call("ZCARD", zset1)
  if zset1size == 0 then return {} end
  
  local members = redis.call("ZREVRANGEBYSCORE", zset1, "+INF", "-INF", "WITHSCORES")

byteshiva

var extend = function(a, b) {
  for (var i in b)
    a[i] = b[i];
  return a;
};

var fluent = function(f) {
  return function() {
    var clone = extend(Object.create(null), this);
    f.apply(clone, arguments);

byteshiva

Requirements

• no upfront installation/agents on remote/slave machines - ssh should be enough
• application components should use third-party software, e.g. HDFS, Spark's cluster, deployed separately
• configuration templating
• environment requires/asserts, i.e. we need a JVM in a given version before doing deployment
• deployment process run from Jenkins

Solution

byteshiva

#!/bin/bash
### Set default parameters
# somewhat follows the conventions from: http://michal.karzynski.pl/blog/2013/10/29/serving-multiple-django-applications-with-nginx-gunicorn-supervisor/
# designed to run on a debian symbiosis box if your interested why its /srv
action=$1
domain=$2
appname=$3
owner=$(who am i | awk '{print $1}')
sitesEnable='/etc/nginx/sites-enabled/'
sitesAvailable='/etc/nginx/sites-available/'

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{
    "acl_datacenter": "test-1",
    "acl_default_policy": "deny",
    "acl_down_policy": "deny",
    "acl_master_token": "1234",
    "acl_ttl": "30s",
    "bootstrap_expect": 3,
    "check_update_interval": "5m",
    "datacenter": "test-1",
    "data_dir": "/etc/consul.d/data",

byteshiva

- What do Etcd, Consul, and Zookeeper do?
  - Service Registration:
    - Host, port number, and sometimes authentication credentials, protocols, versions
      numbers, and/or environment details.
  - Service Discovery:
    - Ability for client application to query the central registry to learn of service location.
  - Consistent and durable general-purpose K/V store across distributed system.
    - Some solutions support this better than others.
    - Based on Paxos or some derivative (i.e. Raft) algorithm to quickly converge to a consistent state.
    - Centralized locking can be based on this K/V store.