{"id":9882,"date":"2014-01-27T09:00:25","date_gmt":"2014-01-27T09:00:25","guid":{"rendered":"https:\/\/serverlift.com\/?p=9882"},"modified":"2025-03-17T14:40:40","modified_gmt":"2025-03-17T14:40:40","slug":"lessons-learned-recent-dropbox-outage","status":"publish","type":"post","link":"https:\/\/serverlift.com\/fr\/blog\/lessons-learned-recent-dropbox-outage\/","title":{"rendered":"Le\u00e7ons \u00e0 tirer de la r\u00e9cente panne de Dropbox"},"content":{"rendered":"

Tr\u00e8s peu d'entre nous dans le secteur de l'h\u00e9bergement Web auront jamais besoin d'\u00e9voluer au niveau des services comme Dropbox. Cela dit, lorsqu'un service de la taille de Dropbox fait un faux pas qui m\u00e8ne \u00e0 une panne, il convient de pr\u00eater attention aux causes et \u00e0 l'impact pour voir s'il y a des le\u00e7ons potentielles \u00e0 tirer.<\/p>\n

Le 10 janvier, Dropbox s'est d\u00e9connect\u00e9. Les utilisateurs n'ont pas pu synchroniser leurs dossiers et n'ont donc pas pu acc\u00e9der \u00e0 leurs fichiers sur de nombreux appareils. Le service a \u00e9t\u00e9 interrompu pendant une grande partie du vendredi soir, et les utilisateurs ont eu du mal \u00e0 acc\u00e9der \u00e0 leurs fichiers tout au long du week-end.<\/p>\n

Of course, the media was full of speculation about potential causes for the outage, with many focusing on a possible DDoS attack. On the following Monday, Dropbox released a statement that went into detail about the causes of the outage, which dismissed the idea of an attaque par des pirates<\/a> et a plut\u00f4t bl\u00e2m\u00e9 un processus de mise \u00e0 jour d\u00e9fectueux.<\/p>\n

Le jour de la panne, Dropbox ex\u00e9cutait une sauvegarde planifi\u00e9e du syst\u00e8me d'exploitation. Comme vous pouvez l'imaginer, la mise \u00e0 jour des milliers de serveurs utilis\u00e9s par Dropbox n'est en aucun cas une t\u00e2che facile. Une grande partie du processus est automatis\u00e9e avec des scripts, ce qui peut avoir \u00e9t\u00e9 la cause du temps d'arr\u00eat.<\/p>\n

La le\u00e7on cl\u00e9 ici, telle que d\u00e9taill\u00e9e par le chef de l'infrastructure chez Dropbox, Akhil Gupta, est que si vous allez effectuer une mise \u00e0 niveau, vous devez \u00eatre absolument certain de l'\u00e9tat du serveur. Pour \u00e9viter que la m\u00eame erreur ne se reproduise, Dropbox a impl\u00e9ment\u00e9 un niveau suppl\u00e9mentaire de v\u00e9rifications, afin que le serveur v\u00e9rifie son propre \u00e9tat avant d'ex\u00e9cuter des commandes, plut\u00f4t que d'ex\u00e9cuter aveugl\u00e9ment des instructions entrantes, ind\u00e9pendamment de ce qu'il fait lorsqu'il les re\u00e7oit.<\/p>\n

Il n'est pas mentionn\u00e9 dans l'autopsie de l'incident, mais la panne aurait probablement pu \u00eatre \u00e9vit\u00e9e gr\u00e2ce \u00e0 des tests plus rigoureux. La panne de Dropbox rappelle ce qui peut se produire lorsqu'une entreprise fait \u00e9voluer rapidement son infrastructure. La mise \u00e0 l'\u00e9chelle devient l'objectif principal, et les tests tombent dans la d\u00e9rive dans une certaine mesure.<\/p>\n

Une approche plus rigoureuse des tests et de la v\u00e9rification des scripts d'automatisation a peut-\u00eatre attrap\u00e9 le \u00abbug subtil\u00bb avant de faire des ravages.<\/p>\n

\u00c0 propos de Graeme Caldwell - Graeme travaille en tant que distributeur entrant pour InterWorx<\/a>, un panneau de contr\u00f4le d'h\u00e9bergement Web r\u00e9volutionnaire pour les h\u00f4tes qui ont besoin d'\u00e9volutivit\u00e9 et de fiabilit\u00e9. Suivez InterWorx sur Twitter \u00e0 @interworx<\/a>, Comme eux sur Facebook<\/a> et consultez leur blog, http:\/\/www.interworx.com\/community<\/a>.<\/p>\n

 <\/p>\n

\n
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<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Very few of us in the web hosting industry will ever have the need to scale to the level that services like Dropbox do. With that said, when a service the size of Dropbox makes a misstep that leads to an outage, it is worth paying attention to the causes and impact to see if […]<\/p>\n","protected":false},"author":2,"featured_media":17003,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":"","_wpscppro_dont_share_socialmedia":null,"_wpscppro_custom_social_share_image":0,"_facebook_share_type":"default","_twitter_share_type":"default","_linkedin_share_type":"default","_pinterest_share_type":"default","_linkedin_share_type_page":"","_instagram_share_type":"default","_medium_share_type":"default","_threads_share_type":"","_google_business_share_type":"","_selected_social_profile":[],"_wpsp_enable_custom_social_template":false,"_wpsp_social_scheduling":{"enabled":false,"datetime":null,"platforms":[],"status":"template_only","dateOption":"today","timeOption":"now","customDays":"","customHours":"","customDate":"","customTime":"","schedulingType":"absolute"},"_wpsp_active_default_template":true},"categories":[78],"tags":[],"class_list":["post-9882","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nLessons 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