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Haute dispo

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Introduction à la haute disponibilité d'une application Web

Introduction à la haute disponibilité d'une application Web

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Transcript

  • 1. Haute disponibilité ?Inside Nicolas Ledezs brain
  • 2. Cest qui ? Nicolas Ledez Orange Business Services - IT&L@bs Indépendant - Hébergement Ruby
  • 3. Pour qui ? FT GDF Orange TV Pages Jaunes Orange Business Service
  • 4. Avec quoi ?VmWare Oracle RAC & Co.Solaris Veritas ClusterLinux SAN / NASWindows Java
  • 5. Disclamer !
  • 6. Cluster ? Actif / passif Actif / actif SPOF ?
  • 7. Cluster & SPOF
  • 8. Gestion du risqueRisque = probabilité x coûtUn serveur ça tombe quand ?Combien ça coute ?
  • 9. Quand ?Réseau ?Mémoire ?Processeur ?Carte mère ?Disque dur ?
  • 10. Combien ça coute ?Oui !Combien ça coute une infra sécurisé ?
  • 11. Exemple iMenlo / AXABesoin : de la perf !2 machines physiqueMysql / Rails / Nginx / VarnishMysql Slave/master
  • 12. DNS Round Robin Varnish Nginx/RailsRO/Slaves MysqlRW/Master Mysql Backup
  • 13. Keep It Simple & Stupid !
  • 14. Organic Web / Orange bleuDe la perf !Pas beaucoup de pagesMysql / Rails / Nginx / Varnish
  • 15. VarnishNginx/Rails Mysql