continuous delivery com o build quebrado sem remorso
TRANSCRIPT
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Continuous Delivery com o build quebradosem remorso
Lucas Medina @medinalucas
Luiz Ribeiro @luizfar
Jun 2013
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Nós fazemos uma média de 5 deploys
para produção por dia
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Às vezes, mesmo que o build esteja
quebrado...
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Como assim?
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• > O Projeto
• Os Times
• O Desenvolvimento
• A Automação
• Os Ambientes
• O Pipeline
• O Deploy
• Os Desafios
• Considerações Finais
Agenda
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O Projeto
Painel de controle para Rackspace
Cloud Servers
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O Projeto
8-10K visitas únicas
diárias
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O Projeto
Thick client com Google Closure e
Knockout.js
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O Projeto
Thin backend com Django e Twist
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O Projeto
APIs públicas do Rackspace
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• O Projeto
• > Os Times
• O Desenvolvimento
• A Automação
• Os Ambientes
• O Pipeline
• O Deploy
• Os Desafios
• Considerações Finais
Agenda
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Os Times
5 times distribuídos em 2
localidades
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Os Backlogs
Kanban por time
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Os Times
Todos os times
trabalham na mesma
base de código e em
qualquer
funcionalidade
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Os Times
Qualquer “trabalho” entra no
backlog
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Os Times
Dev completo == Produção
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• O Projeto
• Os Times
• > O Desenvolvimento
• A Automação
• Os Ambientes
• O Pipeline
• O Deploy
• Os Desafios
• Considerações Finais
Agenda
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O Desenvolvimento
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O Desenvolvimento
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O Desenvolvimento
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O Desenvolvimento
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O Desenvolvimento
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O Desenvolvimento
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O Desenvolvimento
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• O Projeto
• Os Times
• O Desenvolvimento
• > A Automação
• Os Ambientes
• O Pipeline
• O Deploy
• Os Desafios
• Considerações Finais
Agenda
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A Automação
Testes de aceitação são parte
das estórias
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A Automação
3 Quality
Engineers
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A Automação
Backlog exclusivo
para QE
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A Automação
Contém estórias para:
- Melhorar estabilidade
- Cobrir “gaps”
- Manutenção de suites
- Implementação de “sad paths”
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• O Projeto
• Os Times
• O Desenvolvimento
• A Automação
• > Os Ambientes
• O Pipeline
• O Deploy
• Os Desafios
• Considerações Finais
Agenda
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Os Ambientes
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Os Ambientes
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Os Ambientes
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Os Ambientes
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• O Projeto
• Os Times
• O Desenvolvimento
• A Automação
• Os Ambientes
• > O Pipeline
• O Deploy
• Os Desafios
• Considerações Finais
Agenda
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O Pipeline
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O Pipeline
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• O Projeto
• Os Times
• O Desenvolvimento
• A Automação
• Os Ambientes
• O Pipeline
• > O Deploy
• Os Desafios
• Considerações Finais
Agenda
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O Deploy
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair] please check your changes.
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair] please check your changes.[13:02] <mozair>: !good
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair] please check your changes.[13:02] <mozair>: !good[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina] please check your changes. [mozair] already confimed their changes are ok.
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair] please check your changes.[13:02] <mozair>: !good[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina] please check your changes. [mozair] already confimed their changes are ok.[13:03] <jnott>: !good
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair] please check your changes.[13:02] <mozair>: !good[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina] please check your changes. [mozair] already confimed their changes are ok.[13:03] <jnott>: !good[13:03] <bluffynarwhalbot>: Hey [lucasmedina] please check your changes. [mozair, jnott] already confimed their changes are ok.
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair] please check your changes.[13:02] <mozair>: !good[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina] please check your changes. [mozair] already confimed their changes are ok.[13:03] <jnott>: !good[13:03] <bluffynarwhalbot>: Hey [lucasmedina] please check your changes. [mozair, jnott] already confimed their changes are ok.[13:04] <lucasmedina>: !good
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair] please check your changes.[13:02] <mozair>: !good[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina] please check your changes. [mozair] already confimed their changes are ok.[13:03] <jnott>: !good[13:03] <bluffynarwhalbot>: Hey [lucasmedina] please check your changes. [mozair, jnott] already confimed their changes are ok.[13:04] <lucasmedina>: !good[13:04] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair], I'm deploying revision [82459d1db17e177150d139d063f26c90d4ba3889].
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair] please check your changes.[13:02] <mozair>: !good[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina] please check your changes. [mozair] already confimed their changes are ok.[13:03] <jnott>: !good[13:03] <bluffynarwhalbot>: Hey [lucasmedina] please check your changes. [mozair, jnott] already confimed their changes are ok.[13:04] <lucasmedina>: !good[13:04] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair], I'm deploying revision [82459d1db17e177150d139d063f26c90d4ba3889].[13:04] <reach-dn-prod>: jenkins is deploying reach to ord1_prod:ord1 - https://reach-dreadnot.k1k.me/stacks/reach/regions/ord1/deployments/1950
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O Deploy
[13:02] <reach-jenkins>: Project Reach_Production_Deploy_OK build #843: SUCCESS in 52 sec: https://reach-ci.k1k.me/job/Reach_Production_Deploy_OK/843/[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair] please check your changes.[13:02] <mozair>: !good[13:02] <bluffynarwhalbot>: Hey [jnott, lucasmedina] please check your changes. [mozair] already confimed their changes are ok.[13:03] <jnott>: !good[13:03] <bluffynarwhalbot>: Hey [lucasmedina] please check your changes. [mozair, jnott] already confimed their changes are ok.[13:04] <lucasmedina>: !good[13:04] <bluffynarwhalbot>: Hey [jnott, lucasmedina, mozair], I'm deploying revision [82459d1db17e177150d139d063f26c90d4ba3889].[13:04] <reach-dn-prod>: jenkins is deploying reach to ord1_prod:ord1 - https://reach-dreadnot.k1k.me/stacks/reach/regions/ord1/deployments/1950[13:10] <reach-dn-prod>: deployment #1950 of reach to ord1_prod:ord1 succeeded
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• O Projeto
• Os Times
• O Desenvolvimento
• A Automação
• Os Ambientes
• O Pipeline
• O Deploy
• > Os Desafios
• Considerações Finais
Agenda
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Os Desafios
Suites muito lentas
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Suites muitos lentas
Saucelabs?
Infra-estrutura para testes em
paralelo?
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Falhas por comunicação com as APIs
Baixo custo para replicar
ambientes e criar novas contas
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Os Desafios
Testes que falham aleatoriamente
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Testes que falham aleatoriamente
Testes que não são confiáveis
são piores que testes que
sempre falham
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Testes que falham aleatoriamente
A prioridade é o pipeline
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Testes que falham aleatoriamente
“Non-blocking tests”
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Testes que falham aleatoriamente
“Firefighter”
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Os Desafios
Problemas do papel “Firefighter”
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Trabalho do “Firefighter” excedia o
seu dia de apagar o incêndio
Problemas do papel “Firefighter”
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Problemas do papel “Firefighter”
Passou a ser o monitorador do
pipeline
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Problemas do papel “Firefighter”
Despedimos o “Firefighter”
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Problemas do papel “Firefighter”
Pipeline é responsabilidade de
quem fez merge
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Problemas do papel “Firefighter”
Criação de estórias para corrigir
testes instáveis
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Os Desafios
Testes falham por problemas na
comunicação com a API
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Falhas por comunicação com as APIs
“Mock all the things!”
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Falhas por comunicação com as APIs
Alto custo para programar mocks
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Falhas por comunicação com as APIs
“Full stack” é desejável
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Falhas por comunicação com as APIs
+ contas
+ tentativas
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Os Desafios
Quebrar
funcionalidade
em produção
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Quebrar funcionalidade em produção
Pequenos múltiplos deploys
facilitam identificação dos
problemas
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Erros sérios são detectados por
testes
Quebrar funcionalidade em produção
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Re-deploy
Quebrar funcionalidade em produção
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Deixamos até outro deploy se
problema for pequeno
Quebrar funcionalidade em produção
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“Root Cause Analysis”
Quebrar funcionalidade em produção
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• O Projeto
• Os Times
• O Desenvolvimento
• A Automação
• Os Ambientes
• O Pipeline
• O Deploy
• Os Desafios
• > Considerações Finais
Agenda
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Considerações Finais
Design, testes manuais e
validação são atividades
externas
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Considerações Finais
Story Branches
+
Feature Flags
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Considerações Finais
Foco no testes
Sem tratá-los
religiosamente
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Considerações Finais
DevOps!!!
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MuitoObrigado!
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Lucas Medina @medinalucas
Luiz Fernando Ribeiro @luizfar