{"id":4934,"date":"2018-05-02T09:36:20","date_gmt":"2018-05-02T09:36:20","guid":{"rendered":"http:\/\/www.scmgalaxy.com\/tutorials\/?p=4934"},"modified":"2021-02-27T09:07:03","modified_gmt":"2021-02-27T09:07:03","slug":"how-to-run-chef-client-in-why-run-mode-aka-no-operation","status":"publish","type":"post","link":"https:\/\/www.scmgalaxy.com\/tutorials\/how-to-run-chef-client-in-why-run-mode-aka-no-operation\/","title":{"rendered":"How to run chef-client in why-run mode aka \u201cno-operation\u201d"},"content":{"rendered":"

\"\"<\/p>\n

why-run mode is a way to see what the chef-client would have configured, had an actual chef-client run occurred. This approach is similar to the concept of \u201cno-operation\u201d (or \u201cno-op\u201d): decide what should be done, but then don\u2019t actually do anything until it\u2019s done right. Run the executable in why-run mode, which is a type of chef-client run that does everything except modify the system.<\/p>\n

When why-run mode is enabled, a chef-client run will occur that does everything up to the point at which configuration would normally occur. This includes<\/p>\n

    \n
  1. Getting the configuration data,<\/li>\n
  2. Authenticating to the Chef server,<\/li>\n
  3. Rebuilding the node object,<\/li>\n
  4. Expanding the run-list,<\/li>\n
  5. Getting the necessary cookbook files,<\/li>\n
  6. Resetting node attributes,<\/li>\n
  7. Identifying the resources, and<\/li>\n
  8. Building the resource collection and<\/li>\n
  9. Does not include mapping each resource to a provider or configuring any part of the system.<\/li>\n<\/ol>\n

    How to run chef-client?<\/strong><\/p>\n

    $ sudo chef-client -o 'recipe[ntp]' --why-run\r\n$ sudo chef-client -o 'recipe[ntp]' -W<\/pre>\n
    \"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
    why-run mode is a way to see what the chef-client would have configured, had an actual chef-client run occurred. This […]<\/p>\n","protected":false},"author":4,"featured_media":5019,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[88],"tags":[407,636,321,4916],"class_list":["post-4934","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chef","tag-chef","tag-chef-client","tag-mode","tag-why-run"],"yoast_head":"\nHow to run chef-client in why-run mode aka \u201cno-operation\u201d - scmGalaxy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.scmgalaxy.com\/tutorials\/how-to-run-chef-client-in-why-run-mode-aka-no-operation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to run chef-client in why-run mode aka \u201cno-operation\u201d - scmGalaxy\" \/>\n<meta property=\"og:description\" content=\"why-run mode is a way to see what the chef-client would have configured, had an actual chef-client run occurred. 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