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Sql saturday wsfc fundamentals

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  • DOWNLOAD THIS BOOKS INTO AVAILABLE FORMAT (2019 Update) ......................................................................................................................... ......................................................................................................................... Download Full PDF EBOOK here { https://soo.gd/irt2 } ......................................................................................................................... Download Full EPUB Ebook here { https://soo.gd/irt2 } ......................................................................................................................... Download Full doc Ebook here { https://soo.gd/irt2 } ......................................................................................................................... Download PDF EBOOK here { https://soo.gd/irt2 } ......................................................................................................................... Download EPUB Ebook here { https://soo.gd/irt2 } ......................................................................................................................... Download doc Ebook here { https://soo.gd/irt2 } ......................................................................................................................... ......................................................................................................................... ................................................................................................................................... eBook is an electronic version of a traditional print book THIS can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THIS is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less ......................................................................................................................... .............. Browse by Genre Available eBooks .............................................................................................................................. Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, Cookbooks, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult, Crime, Ebooks, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, ......................................................................................................................... ......................................................................................................................... .....BEST SELLER FOR EBOOK RECOMMEND............................................................. ......................................................................................................................... Blowout: Corrupted Democracy, Rogue State Russia, and the Richest, Most Destructive Industry on Earth,-- The Ride of a Lifetime: Lessons Learned from 15 Years as CEO of the Walt Disney Company,-- Call Sign Chaos: Learning to Lead,-- StrengthsFinder 2.0,-- Stillness Is the Key,-- She Said: Breaking the Sexual Harassment Story THIS Helped Ignite a Movement,-- Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones,-- Everything Is Figureoutable,-- What It Takes: Lessons in the Pursuit of Excellence,-- Rich Dad Poor Dad: What the Rich Teach Their Kids About Money THIS the Poor and Middle Class Do Not!,-- The Total Money Makeover: Classic Edition: A Proven Plan for Financial Fitness,-- Shut Up and Listen!: Hard Business Truths THIS Will Help You Succeed, ......................................................................................................................... .........................................................................................................................
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  • DOWNLOAD THIS BOOKS INTO AVAILABLE FORMAT (2019 Update) ......................................................................................................................... ......................................................................................................................... Download Full PDF EBOOK here { https://soo.gd/irt2 } ......................................................................................................................... Download Full EPUB Ebook here { https://soo.gd/irt2 } ......................................................................................................................... Download Full doc Ebook here { https://soo.gd/irt2 } ......................................................................................................................... Download PDF EBOOK here { https://soo.gd/irt2 } ......................................................................................................................... Download EPUB Ebook here { https://soo.gd/irt2 } ......................................................................................................................... Download doc Ebook here { https://soo.gd/irt2 } ......................................................................................................................... ......................................................................................................................... ................................................................................................................................... eBook is an electronic version of a traditional print book THIS can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THIS is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less ......................................................................................................................... .............. Browse by Genre Available eBooks .............................................................................................................................. Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, Cookbooks, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult, Crime, Ebooks, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, ......................................................................................................................... ......................................................................................................................... .....BEST SELLER FOR EBOOK RECOMMEND............................................................. ......................................................................................................................... Blowout: Corrupted Democracy, Rogue State Russia, and the Richest, Most Destructive Industry on Earth,-- The Ride of a Lifetime: Lessons Learned from 15 Years as CEO of the Walt Disney Company,-- Call Sign Chaos: Learning to Lead,-- StrengthsFinder 2.0,-- Stillness Is the Key,-- She Said: Breaking the Sexual Harassment Story THIS Helped Ignite a Movement,-- Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones,-- Everything Is Figureoutable,-- What It Takes: Lessons in the Pursuit of Excellence,-- Rich Dad Poor Dad: What the Rich Teach Their Kids About Money THIS the Poor and Middle Class Do Not!,-- The Total Money Makeover: Classic Edition: A Proven Plan for Financial Fitness,-- Shut Up and Listen!: Hard Business Truths THIS Will Help You Succeed, ......................................................................................................................... .........................................................................................................................
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Sql saturday wsfc fundamentals

  1. 1. Windows Server Failover Clustering Fundamentals Edvaldo Castro edvaldo.castro@outlook.com http://edvaldocastro.com http://facebook.com/edvaldocastro @edvaldocastro02
  2. 2. Patrocinadores
  3. 3. Organização e apoio
  4. 4. Agradecimento especial
  5. 5. Agenda      Termos e Definições Overview - Windows Server Failover Clustering WSFC Quorum Modes WSFC Voting Configuration (SQL Server) DEMO (Create cluster)
  6. 6. Termos e definições  WSFC O “Windows Server Failover Clustering” é um grupo de servidores independentes que trabalham em conjunto para aumentar a disponibilidade de aplicações e serviços.
  7. 7. Termos e definições  WSFC O “Windows Server Failover Clustering” é um grupo de servidores independentes que trabalham em conjunto para aumentar a disponibilidade de aplicações e serviços.
  8. 8. Termos e definições  Failover cluster instance Uma instância de um serviço ou aplicação com recursos de “IP address”, “network name” e outros recursos (Disco, MSDTC, etc) que são utilizados para rodar uma ou mais aplicações e serviços. Suporta falhas que podem ser imperceptíveis para o usuários que acessam esta instância.
  9. 9. Termos e definições  Failover cluster instance Uma instância de um serviço ou aplicação com recursos de “IP address”, “network name” e outros recursos (Disco, MSDTC, etc) que são utilizados para rodar uma ou mais aplicações e serviços. Suporta falhas que podem ser imperceptíveis para o usuários que acessam esta instância.
  10. 10. Termos e definições  Node (Nó) Um servidor Windows que é membro de um WSFC.
  11. 11. Termos e definições  Cluster Resource Uma entidade física (disco) ou lógica (ip, network name) que pertence à uma “Role” e pode ser movida entre os nós. - Network Name - IP Address - Disk - MSDTC
  12. 12. Termos e definições  Cluster Resource Uma entidade física (disco) ou lógica (ip, network name) que pertence à uma “Role” e pode ser movida entre os nós. - Network Name - IP Address - Disk - MSDTC
  13. 13. Termos e definições  Resource group (Role) Grupo de recursos do cluster, gerenciáveis com um único objeto, necessários para executar um serviço ou aplicação  Resource dependency Relação de dependência entre os recursos da mesma “Role”, Ex.: Serviço SQL Server >>> Disco dados.
  14. 14. Termos e definições  Preferred owner O nó de preferência onde a “role” vai estar preferencialmente.  Possible owner Relação de todos os nós do cluster onde há possibilidade de failover de determinada “role”, o failover pode acontecer para quaisquer possible owners.
  15. 15. Overview - WSFC  Metadados distribuídos  Os metadados (configurações e status) do WSFC e aplicações (Configurações) são mantidos em cada nó do cluster. Alterações são automaticamente propagadas para todos os nós  Gerenciamento de recursos  Cada nó do cluster pode prover recursos físicos como DAS, network interfaces, etc. Cada aplicação registra-se como um recurso do cluster e configura suas dependências dos demais recursos daquela Role.
  16. 16. Overview - WSFC  Monitoramento da “saúde do cluster”  A saúde do cluster é verificada por uma combinação entre conectividade da rede HeartBeat + Monitoramento dos recursos.  Failover  Cada nó pode ser configurado para ser manual ou autoticamente transferido para outro nó em caso de falha. O failover automático é baseado em políticas que avaliam a saúde do cluster antes de efetivamente realizar o failover.
  17. 17. Overview - WSFC  Monitoramento da “saúde do cluster”  A saúde do cluster é verificada por uma combinação entre conectividade da rede HeartBeat + Monitoramento dos recursos.  Failover  Cada nó pode ser configurado para ser manual ou autoticamente transferido para outro nó em caso de falha. O failover automático é baseado em políticas que avaliam a saúde do cluster antes de efetivamente realizar o failover.
  18. 18. WSFC Modos de Quorum  Node Majority  Mais da metade dos nós do cluster devem estar “UP” para o cluster continuar no ar  Node and File Share Majority  A mesma relação anterior, porém um File Share é considerado como votante para manutenção do cluster no ar  Node and Disk Majority  Mesmo exemplo anterior, com substituição do File Share Witness por um disco de quórum  Disk Only  Um disco compartilhado é designado como witness (quorum) e a conectividade deste com quaisquer um dos nós do cluster conta como voto.
  19. 19. WSFC Configuração de votos  Configuração recomendada:  Inclua todos os nós primários  Todos os nós que são parte do Availability Group, devem ser incluídos como votantes.  Inclua os possíveis owners de failover automáticos  Cada nó que possa exercer o papel de réplica primária, deve ser incluído como votante.  Exclua os nós de sites secundários  Não dê votos a nós que estão em um site remoto de recuperação de desastre. Estes nós não devem interferir na disponibilidade do serviço de cluster como um todo  Número ímpar de votos  É mais garantido ter um número ímpar de votos, para manter a quantia de metade + 1 para o cluster estar UP.
  20. 20. Questions?
  21. 21. Avaliação e sorteio Preencha a avaliação da sessão e concorra a ferramentas da RedGate, assinatura PluralSight e pen-drive com todas sessões do PASS Summit 2012! http://bit.ly/SQLSat253

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