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useradd -m build
passwd build

yum list rpm*

yum install -y rpmdevtools rpm-build

exit

rpmdev-setuptree

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Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

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<project>
  <repositories>
    <repository>
      <id>cdh.repo</id>
      <url>https://repository.cloudera.com/content/groups/cloudera-repos</url>
      <name>Cloudera Repository</name>
    </repository>
    …
  </repositories>
  <dependencies>

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Smoke Test
curl -X GET -u "admin:admin" -i http://cm-host:7180/api/v9/tools/echo?message=hello

Cluster Creation
curl -X POST -u "admin:admin" -i \
  -H "content-type:application/json" \
  -d '{ "items": [
          {
            "name": "test",
            "version": "CDH4"

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git init .
git add .
git commit -am "my first commit"

git status 

git remote add kinesis https://github.com/nalingarg2/Grad101Infrastructure.git

git remote -v

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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>df</groupId>
    <artifactId>df</artifactId>
    <version>1.0-SNAPSHOT</version>

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#
# Hadoop:: KafkaSpark
# Recipe:: Kafka and Spark
#
# Copyright (C) 2015 Cloudwick labs
# Contact :: nalin.garg@cloudwick.com
# All rights reserved - Do Not Redistribute
#

#One machine is required as below mentioned steps are for POC purpose only.

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http://blog.cloudera.com/blog/2013/03/how-to-create-a-cdh-cluster-on-amazon-ec2-via-cloudera-manager/

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To create the MySQL databases for Cloudera Manager:

Log into MySQL as the root user:
$ mysql -u root -p
Enter password:
Create a database for the Activity Monitor. The database name, user name, and password can be anything you want. For example:
mysql> create database amon DEFAULT CHARACTER SET utf8;
Query OK, 1 row affected (0.00 sec)

mysql> grant all on amon.* TO 'amon'@'%' IDENTIFIED BY 'amon_password';

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#https://docs.puppetlabs.com/learning/agent_master_basic.html

┌───────────────┬───────────────────┐
│ Pre-2.6       │ Post-2.6          │
├───────────────┼───────────────────┤
│ puppetmasterd │ puppet master     │
│ puppetd       │ puppet agent      │
│ puppet        │ puppet apply      │
│ puppetca      │ puppet cert       │
│ ralsh         │ puppet resource   │