How Infrastructure as Code Can Help Test Organizations - - PDF document

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How Infrastructure as Code Can Help Test Organizations - - PDF document

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W11 Test Techniques Wednesday, October 2nd, 2019 1:30 PM How Infrastructure as Code Can Help Test Organizations Achieve Automation

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¡ ¡ W11 ¡

Test ¡Techniques ¡ Wednesday, ¡October ¡2nd, ¡2019 ¡1:30 ¡PM ¡ ¡ ¡ ¡ ¡

How ¡Infrastructure ¡as ¡Code ¡Can ¡Help ¡ Test ¡Organizations ¡Achieve ¡Automation ¡ ¡

Presented ¡by: ¡ ¡ ¡

¡ Kat ¡Rocha ¡

¡ ACT/NRCCUA ¡ ¡

Brought ¡to ¡you ¡by: ¡ ¡ ¡ ¡

¡

¡

¡ ¡

888-­‑-­‑-­‑268-­‑-­‑-­‑8770 ¡·√·√ ¡904-­‑-­‑-­‑278-­‑-­‑-­‑0524 ¡-­‑ ¡info@techwell.com ¡-­‑ ¡http://www.starwest.techwell.com/ ¡ ¡ ¡

¡

¡ ¡ ¡

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¡

Kat ¡Rocha ¡

¡ Kat ¡Rocha ¡has ¡over ¡twenty ¡years ¡of ¡experience ¡in ¡Test ¡Engineering ¡and ¡is ¡currently ¡ a ¡Senior ¡QA ¡Engineer ¡at ¡ACT/NRCCUA. ¡She ¡has ¡managed ¡and ¡lead ¡test ¡teams ¡at ¡ Imperva, ¡The ¡Advisory ¡Board ¡Co., ¡Dell, ¡HP ¡and ¡Compaq, ¡working ¡on ¡computer ¡ hardware, ¡software ¡and ¡firmware. ¡Kat ¡loves ¡to ¡break ¡things ¡and ¡that ¡makes ¡her ¡ passionate ¡about ¡quality ¡and ¡customer ¡experiences. ¡She ¡has ¡a ¡Master’s ¡in ¡ Electrical ¡and ¡Computer ¡Engineering ¡from ¡Georgia ¡Tech ¡and ¡a ¡BS ¡in ¡Computer ¡ Engineering ¡from ¡Texas ¡A&M. ¡She ¡also ¡likes ¡to ¡run ¡half-­‑marathons ¡and ¡is ¡a ¡2019 ¡ Texas ¡State ¡Champion ¡in ¡taekwondo. ¡ ¡

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8/18/19 1

How Infrastructure as Code can help Test Organizations Improve and Achieve Automation

Infrastructure as Code

2

Kat Rocha

  • QA Test Engineer/Lead for over 20 years
  • I like to break things to make them better!
  • Worked at Compaq/HP, Dell, The Advisory Board, Imperva
  • Now at ACT/NRCCUA helping connect students and

universities!

Hello!

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What is Infrastructure as Code?

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What is code?

What do we usually think of when we say code?

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Traditional Code

Hello World!

  • Instructions for a computer to execute
  • Compiled (or interpreted) as executable software

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Infrastructure as Code

  • Models the environment
  • Uses configuration files

to define servers, updates or application deployments

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That didn’t look like code!

  • IaC is the method of managing an environment through a

defined model

  • The model can define many things
  • Web server
  • Patch updates
  • Application deployment

Why Use Infrastructure as Code?

  • Track changes in Revision Control System
  • Rapid Duplication of Environments
  • Elimination of Configuration Drift
  • Treat updates like a development cycle
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Revision Control

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  • Changes to the Infrastructure can

be known and tracked

  • Environment can be rolled back to

previous known-good state

  • Configuration files are available to

entire organization

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Rapid Duplication

  • Rapid duplication of servers/environments
  • Dev, QA, stage, production
  • Rapidly deploy new environments as needed for automation
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Eliminate Configuration Drift

  • Configuration Drift is when environments get out of sync because
  • ne is updated and the other has now
  • IaC helps keep all environments in the same stage because

changes are made to the configuration model

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Keep updates small!

  • Treat provisioning and updating like a dev cycle
  • Make small changes that can be easily tested
  • Testing and automation in small chunks
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What is needed for Infrastructure as Code?

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Dynamic Infrastructure

In order to support IaC, the infrastructure environment must have certain characteristics that are needed for IaC.

  • Must be programmable
  • Must have resources on demand
  • Must be self-service

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Mindset

  • Reduce change to small sets
  • Treat infrastructure

configuration/change as development project

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Iac Tools

  • Procedural
  • How an environment should

change

  • Declarative
  • Define the resulting environment
  • Orchestration
  • Server/resource provisioning
  • Configuration management
  • Manage software

IaC Tools

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AWS Cloudformation

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  • Works on the AWS Cloud
  • Free
  • Declarative/Orchestration
  • Additional tools needed

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Terraform

  • Works with public cloud

vendors and Vmware

  • Declarative/Orchestration
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Chef

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  • Integrates with multiple cloud

environments and VMware

  • Procedural/Configuration Management
  • Uses agent monitor

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Ansible

  • Supports many environments
  • Procedural/Configuration management
  • Connects via SSH

Bonus points: What is an ansible? Double bonus points: Who coined the term ansible?

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Puppet

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  • Provision cloud, virtual or bare metal system
  • Declarative/Configuration management
  • Client/server architecture

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Tools overview

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Case Studies

Or How IaC can help in Real Life

Crimson Medical Referrals

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Crimson Medical Referrals (CMR) is a SaaS multi-tenant web-based application for assisting health care providers with making medical referrals. The infrastructure environment consists of two web application servers, a database server and a load balancer. This environment is replicated in production, staging and testing.

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Environment Problems

  • Production and staging are managed separately from QA
  • Leads to configuration drift
  • Developers have no environment (work locally)
  • Integration bugs
  • Redeploying relies on outside IT
  • Delays in deployment

What could possibly go wrong?

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How does IaC help?

  • Eliminate configuration drift
  • Replicate environments and add as needed
  • Become self-service
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EX Events Platform

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The EX Events Platform (EX) is a CentOS-based virtual machine. Typically delivered as an on- premises product, it connects to another product called an MX Management Server. In a full ecosphere, the MX Management Server is connected to one or more Gateway Servers, which in turn connect to multiple database servers.

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What’s wrong here?

  • Every member of the team has own deployment process
  • Lots of different configurations
  • Reliance on other virtual machines
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How can IaC help with an On-Prem solution?

  • Automate deployment of EX and other virtual machines
  • Use for both manual QA and Automation
  • Standardize ecosphere
  • Use in dev and QA – create consistency

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LocustIO

LocustIO is a free performance tool that can be used as a distributed system

Performance testing

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What are the needs that IaC fills?

  • Need to deploy a system to run performance tests within

AWS ecosphere

  • Potential need for future identical systems to support

distributed load testing

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What did we do with IaC?

  • Defined the performance test system using IaC (Terraform)
  • Deployed all the pieces of the system
  • If additional systems are needed, the Terraform files can

be reused.

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Challenges for Infrastructure as Code

Nothing is perfect, especially in software

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IaC Challenges

While the benefits of IaC are manifold, it is important to understand the challenges that arise from using IaC.

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Awareness of security risks

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Resist Ad Hoc changes to infrastructure

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Propagation of errors to multiple systems

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8/18/19 19

Kat Rocha

Senior QA Engineer E: Kathryn.rocha@nrccua.org T: @16thfloortester

ENCOURA.ORG What questions do you have?

Thank you.