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DBA Brasil 2.0: Como o papel e atividades de DBA ficam no contexto da cultura DevOps

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Palestra apresentada em conjunto com @fernandoike falando sobre os novos desafios do DBA em uma cultura DevOps, onde o mesmo precisa sair se sua zona de conforto, interagir mais com outros times (não apenas times técnicos), aprender novas tecnologias, etc.

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DBA Brasil 2.0: Como o papel e atividades de DBA ficam no contexto da cultura DevOps

  1. 1. Como o papel e atividades de DBA ficam no contexto da cultura DevOps DBA Brasil 2.0 - São Paulo - Maio/2017
  2. 2. @fabriziomello @fernandoike
  3. 3. Desempenho CustoDisponibilidade Baseado na apresentação do John Willis
  4. 4. Desenvolvimento Infraestrutura
  5. 5. DBA SysAdmin NetAdminNetAdmin SecAdmin Whatever Admin Infraestrutura
  6. 6. Infraestrutura ● Estabilidade ● Custo ● Segurança ● Gerenciamento de ativos e serviços
  7. 7. DBA 1.0 ● Planejar, instalar e Configurar um Banco de dados (Oracle, SQL Server, PostgreSQL, etc.) ● Arquitetura, e criação de banco de dados ● Arquitetura e implantação de HA/DR para cada banco de dados ● Monitoramento e manutenção do banco de dados ● Performance Tuning ● Segurança dos Banco de Dados (permissões de acesso, criptografia, patches, etc.
  8. 8. Exemplos - Você não vai avisar que essa proposta não vai funcionar? - Não, já fiz algumas vezes mas não me escutaram. - Precisamos entregar este projeto para ontem! - Hum… Vamos passar para o Zé Fast, ele terminar rapidinho. - Mas ele já não está sobrecarregado? - "Se você quer que algo seja feito, peça a quem está ocupado!"
  9. 9. Exemplos ● Múltiplas equipes mantém os sistemas de uma empresa no ar. ● Cada uma delas tem o SLA de atendimento relativo a equipe (SO, Virtualização, Rede, Rede de Borda, Desenvolvedores, DBAs, NOC) e o SLA Global. ● Aprovação de cada mudança (pequena ou grande) em um ambiente/sistema leva semanas pois todas áreas precisam aprovar. ● Uma equipe move o ticket para outra para não estourar o SLA dela.
  10. 10. Exemplos Novo sistema vai entrar no ar: ● Janela de conversão da base de dados muito longa ● No meio da conversão ocorre uma falha e base de dados fica ½ velha / ½ nova Decisão?: ● Culpar o desenvolvedor? ● O restore do backup? ● Criar outro script/programa para marretar a base de dados para completar a migração.
  11. 11. Estudo da DBTA patrocinado pela Dell (2015)
  12. 12. Novo perfil de atividade 100% dos DBAs são responsáveis por múltiplos banco de dados 75% disseram que o número de instâncias estão crescendo constantemente 70% gerenciam Banco de Dados de diferentes fornecedores (Oracle, SQL Server, MySQL, etc.) 60% estão gastando mais tempo em performance tuning do que suas atividades diárias Estudo da DBTA patrocinado pela Dell (2015)
  13. 13. A diferença de expectativa ● 45% disseram que a Gerência de Mudança é uma atividade crítica no ambiente atual de banco de dados ● 33% dos DBAs concordam que o suporte ao provisionamento de banco de dados do desenvolvimento é uma das suas tarefas diárias ● 100% dos DBAs concordam que a automação foi uma área em crescimento e foco necessário Estudo da DBTA patrocinado pela Dell (2015)
  14. 14. Nova realidade ● Aumento das dependências de plataformas ● Silos de dados para plataforma de dados consolidados ● Necessidade de aprender novas tecnologias de provisionamento ● Aumento da pressão para deploys mais frequentes e mais rápidos das mudanças ● Necessidade crescente da disponibilidade para desenvolvimento dos bancos de dados Estudo da DBTA patrocinado pela Dell (2015)
  15. 15. Definição DevOps - Fernando Ike "DevOps significa uma cultura permite que as organizações (e a TI) alterar seus processos, transformando-as de organizações de baixa para alta performance."
  16. 16. Conhecimento de novas "coisas" Linguagens ● Javascript ● HTML ● CSS ● C#.NET ● Java ● PHP ● Python ● XML/JSON ● SQL Bancos de Dados ● Oracle ● SQL Server ● PostgreSQL ● MySQL ● Hadoop ● Cassandra ● MongoDB ● VoltDB ● Neo4J
  17. 17. Conhecimento de novas "coisas" Q/A - Testes ● Testes de Carga ● Testing de vulnerabilidades ● Testes Unitários ● Testes de Integridade ● Code Review ● Performance Tuning Automation & Deployment ● Jenkins ● Bamboo ● CircleCI ● Octopus Deploy ● Docker ● Chef/Puppet/Ansible
  18. 18. Serviços "DevOps" ● Planejamento ● Construção/Criação ● Testes de QA ● Performance Tuning ● Code Review ● Testing ● Automação de Release ● Monitoramento/Discovery
  19. 19. Como DevOps Impacta os DBA's ● O novo paradigma DevOps faz muito sentido ● As "Soluções" não são sempre estão prontas, visíveis ou fáceis ● O papel do DBA não será extinto. De fato, está se tornando mais um ponto crítico para o sucesso do DevOps ● As tarefas diárias do DBA crescem para além dos esforços focados nos banco de dados ● A necessidade de pensar proativamente nas áreas onde a automação pode ser introduzida. Em alguns casos a expectativa padrão está se tornando a atuar como desenvolvedor e/ou cientista de dados.
  20. 20. Métodos ● Scripts SQL ● DACPAC ● DB Deployment tools (Datical, DBMaestro, etc) ● Por Backup Deploy
  21. 21. Estratégias para deploys ● Marcha da morte (Tudo de uma vez) ● Deploy parcial (Canary) ● Rolling Deployment ● Blue/Green Deploy ● "Feature toggle"
  22. 22. Post-it na tela ● Não existe bala de prata! Soluções diferentes para situações diferentes ● Siga as boas práticas: Backups, clones, teste de falhas, etc ● Versione os metadados do banco de dados no processo ● Testar (automatização) seu banco de dados
  23. 23. Buzzwords relevantes ● Feature toggle ● Continuous Delivery ● Brownfield/GreenField ● System Thinking (1st Way to DevOps)
  24. 24. Referências The Phoenix Project CD for DBs: Database Deployment Strategies DBA Role Shift in a DevOps World Automating the Database: A Win-Win for DBAs and DevOps CAMS - http://itrevolution.com/devops-culture-part-1/

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