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Installing Cassandra on Mac OS X

Install Homebrew

Homebrew is a great little package manager for OS X. If you haven't already, installing it is pretty easy:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

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My Openshift Cheatsheet

Openshift build secrets for cloning git repos using SSH Keys

• To create ssh secret:

oc create secret generic sshsecret \
    --from-file=ssh-privatekey=$HOME/.ssh/id_rsa

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If you'd like to use a .jar file in your project, but it's not available in any Maven repository, 
you can get around this by creating your own local repository. This is done as follows:

1 - To configure the local repository, add the following section to your pom.xml (inside the <project> tag):
  
  <repositories>
      <repository>
        <id>in-project</id>
        <name>In Project Repo</name>
        <url>file://${project.basedir}/libs</url>

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from kazoo.client import KazooClient

config = {
    'consumer_group': '<%= @consumer_group %>',
    'topic': '<%= @topic %>'
}

def main():
    zk = KazooClient()
    zk.start()

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Using docker container engine

To use docker as the container runtime run:

$ minikube start \
    --network-plugin=cni \
    --container-runtime=docker

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master:
  image: elasticsearch:2
  ports:
    - "9200:9200"
  restart: always
  container_name: es_master

es-node:
  image: elasticsearch:2
  command: elasticsearch --discovery.zen.ping.unicast.hosts=es_master

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1 Background (page 2)

Today's system requirement

• large number of request
• huge amount of data
• quick response time
• (almost) 100% uptime

(page 3) If we compare the number of Internet users in the past decades with the number of users of the two afore mentioned websites, we can see that they now handle as much traffic as the entire Internet used to.

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# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help

driftfile /var/lib/ntp/ntp.drift


# Enable this if you want statistics to be logged.
#statsdir /var/log/ntpstats/

statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable

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What is this?

Following this guide will set up a local Elasticsearch with Kibana and Marvel using Homebrew and Homebrew Cask

Prerequisites

If you already have Java installed on your system, skip steps Install Cask and Install Java

If you already have Java and Homebrew installed on your system, skip steps Prerequisites, start at Install Elasticsearch and Kibana after running $ brew update

Install Homebrew

• $ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

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function keepTrying(otherArgs, promise) {
	promise = promise||new Promise();
	
	// try doing the important thing
	
	if(success) {
		promise.resolve(result);
	} else {
		setTimeout(function() {
			keepTrying(otherArgs, promise);