Christophe Marchal | Software Architect DevOps e a nova Cultura
Devops e a nova cultura - TDC Florianopolis 2015
Jul 30, 2015
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Christophe Marchal | Software Architect
DevOps e a nova Cultura
@toff63
http://github.com/toff63
http://francesbagual.net
About me
www.ilegra.com
What DevOps is not
❏ Process
❏ Methodology
❏ Set of Practices
❏ Set of Tools
❏ Certification
❏ Team / Role / Department
❏ SaaS
❏ Framework
What DevOps is
❏ A journey to a desirable state
❏ A way of thinking
❏ A continuous transformation process
❏ The result of experiences
❏ A movement ...
Start up example
Let’s deploy!
Start up example
Open a ticket
Start up example
Start of the success
Application grow
Let’s deploy!
Application grow
Too unstable!
Start some XP Practices
Only commit in trunk
Use of SCM toolContinuous Integration
➔ unit tests #compilation➔ integration tests #runtime➔ acceptance tests #runtime
Continuous Integration
CompilationUnit Tests
Deploy em Staging
Integration Tests
Automatic AcceptanceTests
UserAcceptanceTests
Quality Improvement
Team and Application keep growing
❏ Time spent merging
❏ Time spent compiling
❏ Time spent testing
❏ Time to put a feature in production
❏ Application Response time
❏ Hardware consumption
Isolation via Modularization
Move dependency from Compilation
to Runtime
New Deploy
Service
Service
Application grow
I cannot deploy separately!
This is safe! Only 1 line of code changed
Service Service
Service Service
Service dependencies
Service
ServiceService
Service
Service
SOA
SOA
Service Service
Contract
Service
➔ Dependency only depends on service contract➔ Service contract has versions➔ No branch
Service
ContractContract
Service
Contract
Contract
➔ unit tests #compilation➔ contract tests #compilation➔ integration tests #runtime➔ acceptance tests #runtime➔ performance tests #runtime
Update one service
I only deploy 1 service
This is safe! Only 1 line of code changed
ServiceContract
Conway’s Law
“Organizations which design systems … are constrained to produce designs which are
copies of this communication
structures of these organizations”Melvin Conway, 1968
Organize teams around services
User
User
User
BA
BA
BA
Every team working as a Lean Startup
Number of tickets
Need to automatize
➔ unit tests #compilation➔ contract tests #compilation➔ integration tests #runtime➔ acceptance tests #runtime➔ performance tests #runtime➔ deploy automation tests #infra
Infrastructure as a code
Continuous Deployment
➔ Availability
➔ Rollback
➔ Data synchronization
➔ Scalability
➔ Cost/Benefit
Continuous Delivery
CompilationUnit Tests
Deploy Staging
Integration Tests
Automatic AcceptanceTests
UserAcceptanceTests
Stress Test
Deploy Production
Monitor Everything
Feature Toggle
Isolation Build once, Deploy everywhere
Configuration Management
REST Service
Key Value databaseFilesystemEnvironment Variable
Green / Blue Deployment
Canary Deploy
Deploy the same way everywhere
Virtualization
Provisioning
Operation System
Virtual box images
Local Machine
Operational System
Operational System Application
Application
Operational System
Application
Still not there
Production Local Machine
Still not there
Kernel Linux
Docker Repository
Scripting
Many, many, many servers
➔ job scheduling
➔ bind containers to physical servers
New Operational System
Failure Everywhere
Test in Production
Christophe Marchal | Software Architect
Thanks for your Attention
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