{"id":18699,"date":"2025-10-25T07:41:19","date_gmt":"2025-10-25T07:41:19","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=18699"},"modified":"2025-10-25T07:41:19","modified_gmt":"2025-10-25T07:41:19","slug":"aws%e5%a4%a7%e8%a6%8f%e6%a8%a1%e9%9a%9c%e5%ae%b3%e3%81%ae%e5%8e%9f%e5%9b%a0%e3%81%af%e3%80%8cdns%e7%ae%a1%e7%90%86%e3%82%b7%e3%82%b9%e3%83%86%e3%83%a0%e3%80%8d%e3%81%ab%e6%bd%9c%e3%82%93%e3%81%a7","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/18699\/","title":{"rendered":"AWS\u5927\u898f\u6a21\u969c\u5bb3\u306e\u539f\u56e0\u306f\u300cDNS\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u300d\u306b\u6f5c\u3093\u3067\u3044\u305f\u8a2d\u8a08\u4e0a\u306e\u6b20\u9665\u3060\u3063\u305f\u3053\u3068\u304c\u5224\u660e &#8211; GIGAZINE"},"content":{"rendered":"\n<\/p>\n<div><!-- &larr;20140212 --><\/p>\n<p><!-- google_ad_section_start --><\/p>\n<p><a target=\"_blank\" href=\"https:\/\/www.flickr.com\/photos\/websummit\/52490617230\/\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/i.gzn.jp\/img\/2025\/10\/25\/aws-incident-amazon-dynamodb-dns\/00_m.jpg\" border=\"0\" class=\"lzsmall img-standard-size\" alt=\"\"\/><\/a><\/p>\n<p class=\"preface\">\n<small>by <a target=\"_blank\" href=\"https:\/\/www.flickr.com\/photos\/websummit\/\" target=\"_blank\">Web Summit<\/a><\/small><\/p>\n<p>\u65e5\u672c\u6642\u9593\u306e2025\u5e7410\u670820\u65e5\u306b\u3001Amazon Web Services\u306e\u5317\u30d0\u30fc\u30b8\u30cb\u30a2(us-east-1)\u30ea\u30fc\u30b8\u30e7\u30f3\u3067<b><a target=\"_blank\" href=\"https:\/\/gigazine.net\/news\/20251021-aws-us-east-1-region-insident\/\" target=\"_blank\">\u5927\u898f\u6a21\u306a\u30b5\u30fc\u30d3\u30b9\u969c\u5bb3<\/a><\/b>\u304c\u767a\u751f\u3057\u3001\u4e16\u754c\u4e2d\u306e\u30a6\u30a7\u30d6\u30b5\u30fc\u30d3\u30b9\u3084\u30a2\u30d7\u30ea\u304c\u4e00\u6642\u505c\u6b62\u3092\u4f59\u5100\u306a\u304f\u3055\u308c\u307e\u3057\u305f\u3002Amazon\u306f\u305d\u306e\u5f8c\u306e\u8abf\u67fb\u3067\u3001AWS\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b5\u30fc\u30d3\u30b9\u3067\u3042\u308b<b><a target=\"_blank\" href=\"https:\/\/ja.wikipedia.org\/wiki\/Amazon_DynamoDB\" target=\"_blank\">DynamoDB<\/a><\/b>\u306e\u81ea\u52d5DNS\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u306b\u8a2d\u8a08\u4e0a\u306e\u6b20\u9665\u304c\u3042\u3063\u305f\u305f\u3081\u3060\u3068\u3044\u3046\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n<p><b>Summary of the Amazon DynamoDB Service Disruption in Northern Virginia (US-EAST-1) Region<\/b><br \/><b><a target=\"_blank\" href=\"https:\/\/aws.amazon.com\/jp\/message\/101925\/\" target=\"_blank\">https:\/\/aws.amazon.com\/jp\/message\/101925\/<\/a><\/b><\/p>\n<p><a target=\"_blank\" href=\"https:\/\/aws.amazon.com\/jp\/message\/101925\/\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/i.gzn.jp\/img\/2025\/10\/25\/aws-incident-amazon-dynamodb-dns\/snap0492.png\" border=\"0\" alt=\"\" class=\"lzsmall\"\/><\/a><\/p>\n<p class=\"preface\">\n<br \/>AWS\u306b\u3088\u308b\u3068\u3001\u65e5\u672c\u6642\u9593\u306e2025\u5e7410\u670820\u65e515\u664248\u5206\u304b\u308910\u670821\u65e56\u664220\u5206\u306b\u304b\u3051\u3066\u767a\u751f\u3057\u305f\u969c\u5bb3\u306f3\u6bb5\u968e\u3067\u9032\u884c\u3057\u3066\u304a\u308a\u3001\u6700\u521d\u306bDynamoDB\u304c\u3001\u6b21\u306bEC2\u3001\u6700\u5f8c\u306bNetwork Load Balancer(NLB)\u304c\u5f71\u97ff\u3092\u53d7\u3051\u305f\u3068\u306e\u3053\u3068\u3002\u7b2c1\u6bb5\u968e\u306f10\u670820\u65e515\u664248\u5206\u304b\u308917\u664240\u5206\u306b\u304b\u3051\u3066\u767a\u751f\u3057\u3001DynamoDB\u306eAPI\u30a8\u30e9\u30fc\u7387\u304c\u6025\u4e0a\u6607\u3057\u307e\u3057\u305f\u3002\u6839\u672c\u7684\u306a\u539f\u56e0\u306f\u3001DynamoDB\u306eDNS\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u306b\u8a2d\u8a08\u4e0a\u306e\u30d0\u30b0\u304c\u3042\u3063\u305f\u305f\u3081\u3067\u3057\u305f\u3002<\/p>\n<p>AWS\u306e\u3088\u3046\u306a\u5927\u898f\u6a21\u30b5\u30fc\u30d3\u30b9\u306fDNS\u3092\u4f7f\u3044\u3001\u81a8\u5927\u306a\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u901a\u4fe1\u3092\u632f\u308a\u5206\u3051\u3066\u3044\u307e\u3059\u3002\u3053\u306eDNS\u306f\u30b5\u30fc\u30d0\u30fc\u306e\u8ffd\u52a0\u3084\u6545\u969c\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u3001\u300cDNS Enactor\u300d\u3068\u547c\u3070\u308c\u308b\u81ea\u52d5\u66f4\u65b0\u30b7\u30b9\u30c6\u30e0\u3067\u983b\u7e41\u306b\u66f4\u65b0\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u306eDNS Enactor\u306e\u51e6\u7406\u30bf\u30a4\u30df\u30f3\u30b0\u304c\u91cd\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/i.gzn.jp\/img\/2025\/10\/25\/aws-incident-amazon-dynamodb-dns\/03_m.jpg\" border=\"0\" alt=\"\" class=\"lzsmall\"\/><\/p>\n<p class=\"preface\">\n<br \/>AWS\u306b\u3088\u308c\u3070\u3001\u3042\u308bDNS Enactor\u304c\u53e4\u3044DNS\u30ec\u30b3\u30fc\u30c9\u3092\u9069\u7528\u3057\u3088\u3046\u3068\u3057\u3066\u7570\u5e38\u306b\u6642\u9593\u304c\u304b\u304b\u3063\u3066\u3044\u308b\u9593\u306b\u3001\u5225\u306eDNS Enactor\u304c\u6700\u65b0\u306eDNS\u30ec\u30b3\u30fc\u30c9\u3092\u9069\u7528\u3057\u3001\u305d\u306e\u5f8c\u306e\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u51e6\u7406\u3092\u958b\u59cb\u3057\u305f\u3068\u306e\u3053\u3068\u3002\u305d\u306e\u76f4\u5f8c\u3001\u9045\u308c\u3066\u3044\u305fDNS Enactor\u304c\u30c1\u30a7\u30c3\u30af\u3092\u3059\u308a\u629c\u3051\u3066\u53e4\u3044DNS\u30ec\u30b3\u30fc\u30c9\u3092\u4e0a\u66f8\u304d\u3057\u3066\u3057\u307e\u3044\u3001\u307b\u307c\u540c\u6642\u306b\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u51e6\u7406\u306b\u3088\u3063\u3066\u305d\u306e\u53e4\u3044DNS\u30ec\u30b3\u30fc\u30c9\u304c\u524a\u9664\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002\u305d\u306e\u7d50\u679c\u3001DynamoDB\u306e\u4e3b\u8981\u306aDNS\u30ec\u30b3\u30fc\u30c9\u304b\u3089\u5168\u3066\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u524a\u9664\u3055\u308c\u3001\u81ea\u52d5\u5fa9\u65e7\u3082\u4e0d\u53ef\u80fd\u306a\u72b6\u614b\u306b\u9665\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>Amazon\u306e\u6280\u8853\u30c1\u30fc\u30e0\u306f16\u664238\u5206\u306b\u554f\u984c\u7b87\u6240\u3092\u7279\u5b9a\u3057\u300117\u664225\u5206\u306bDNS\u3092\u4fee\u5fa9\u300217\u664232\u5206\u306b\u30b0\u30ed\u30fc\u30d0\u30eb\u30c6\u30fc\u30d6\u30eb\u306e\u540c\u671f\u304c\u5b8c\u4e86\u3057\u300117\u664240\u5206\u307e\u3067\u306b\u5168\u9867\u5ba2\u63a5\u7d9a\u304c\u56de\u5fa9\u3057\u307e\u3057\u305f\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/i.gzn.jp\/img\/2025\/10\/25\/aws-incident-amazon-dynamodb-dns\/01_m.jpg\" border=\"0\" alt=\"\" class=\"lzsmall\"\/><\/p>\n<p class=\"preface\">\n<br \/>\u7b2c2\u6bb5\u968e\u306f\u4eee\u60f3\u30b5\u30fc\u30d0\u30fc\u30b5\u30fc\u30d3\u30b9\u306eAmazon EC2\u95a2\u9023\u3067\u300110\u670820\u65e515\u664248\u5206\u304b\u3089\u7fcc21\u65e55\u664250\u5206\u307e\u3067\u7d9a\u304d\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001EC2\u306e\u65b0\u898f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u8d77\u52d5\u304c\u300cRequestLimitExceeded\u300d\u3084\u300cInsufficientCapacity\u300d\u30a8\u30e9\u30fc\u3067\u5931\u6557\u3057\u3001\u65e2\u5b58\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u6b63\u5e38\u3067\u3057\u305f\u3002<\/p>\n<p>\u539f\u56e0\u306f\u3001\u7b2c1\u6bb5\u968e\u3067\u306eDynamoDB\u969c\u5bb3\u306b\u3088\u308a\u3001\u7269\u7406\u30b5\u30fc\u30d0\u30fc\u3092\u76e3\u8996\u3059\u308bDropletWorkflow Manager(DWFM)\u304c\u7269\u7406\u30b5\u30fc\u30d0\u30fc\u306e\u72b6\u614b\u76e3\u8996\u306b\u5931\u6557\u3057\u3001\u5fa9\u65e7\u5f8c\u3082\u30ea\u30fc\u30b9(\u76e3\u8996\u4f53\u5236)\u306e\u518d\u78ba\u7acb\u304c\u96c6\u4e2d\u3057\u3066\u904e\u8ca0\u8377\u3092\u8d77\u3053\u3057\u305f\u305f\u3081\u3067\u3059\u3002AWS\u306f10\u670821\u65e50\u664214\u5206\u306bDWFM\u3092\u9078\u629e\u7684\u306b\u518d\u8d77\u52d5\u3057\u3066\u6b63\u5e38\u5316\u3092\u9032\u3081\u30011\u664228\u5206\u306bDWFM\u3068\u5168\u7269\u7406\u30b5\u30fc\u30d0\u30fc\u306e\u30ea\u30fc\u30b9\u3092\u518d\u78ba\u7acb\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u3057\u304b\u3057\u305d\u306e\u5f8c\u3001\u4eca\u5ea6\u306fEC2\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u3092\u914d\u5e03\u3059\u308b\u300cNetwork Manager\u300d\u3068\u3044\u3046\u30b7\u30b9\u30c6\u30e0\u304c\u3001\u6e9c\u307e\u3063\u3066\u3044\u305f\u66f4\u65b0\u4f5c\u696d\u306e\u51e6\u7406\u306b\u8ffd\u3044\u3064\u304b\u305a\u3001\u9045\u5ef6\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001EC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u8d77\u52d5\u3057\u3066\u3082\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3067\u304d\u306a\u3044\u72b6\u614b\u304c\u7d9a\u304d\u307e\u3057\u305f\u3002\u3053\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9045\u5ef6\u306f21\u65e52\u664236\u5206\u306b\u89e3\u6d88\u3057\u3001EC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u6700\u7d42\u7684\u306b21\u65e55\u664250\u5206\u306b\u5b8c\u5168\u306b\u6b63\u5e38\u5316\u3057\u307e\u3057\u305f\u3002<\/p>\n<p><a target=\"_blank\" href=\"https:\/\/unsplash.com\/photos\/a-wooden-board-with-a-ball-6Kxw8xUoYaI\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/i.gzn.jp\/img\/2025\/10\/25\/aws-incident-amazon-dynamodb-dns\/02_m.jpg\" border=\"0\" alt=\"\" class=\"lzsmall\"\/><\/a><\/p>\n<p class=\"preface\">\n<br \/>\u7b2c3\u6bb5\u968e\u304c\u767a\u751f\u3057\u305f\u306e\u306f\u3001\u914d\u4e0b\u306eEC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u6b63\u5e38\u5316\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308bNetwork Load Balancer(NLB)\u3067\u300110\u670820\u65e521\u664230\u5206\u304b\u308910\u670821\u65e56\u66429\u5206\u306b\u304b\u3051\u3066\u63a5\u7d9a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001\u65b0\u3057\u3044EC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u72b6\u614b\u304c\u672a\u53cd\u6620\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001NLB\u306e\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u304c\u884c\u308f\u308c\u305f\u304b\u3089\u3067\u3001\u6b63\u5e38\u306a\u30ce\u30fc\u30c9\u304c\u8aa4\u3063\u3066\u5207\u308a\u96e2\u3055\u308c\u3001DNS\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u304c\u983b\u767a\u3057\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3064\u3044\u3066\u306f\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u304c21\u65e51\u664236\u5206\u306b\u81ea\u52d5\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u3092\u4e00\u6642\u505c\u6b62\u3059\u308b\u3053\u3068\u3067\u5bfe\u51e6\u3057\u3001EC2\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u56de\u5fa9\u5f8c\u300121\u65e56\u664209\u5206\u306b\u8a2d\u5b9a\u3092\u5143\u306b\u623b\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>AWS\u306f\u300c\u4eca\u56de\u306e\u969c\u5bb3\u304c\u304a\u5ba2\u69d8\u306b\u4e0e\u3048\u305f\u5f71\u97ff\u306b\u3064\u3044\u3066\u304a\u8a6b\u3073\u7533\u3057\u4e0a\u3052\u307e\u3059\u3002\u79c1\u305f\u3061\u306f\u9ad8\u3044\u53ef\u7528\u6027\u30ec\u30d9\u30eb\u3067\u30b5\u30fc\u30d3\u30b9\u3092\u904b\u7528\u3057\u3066\u304d\u305f\u5f37\u529b\u306a\u5b9f\u7e3e\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u79c1\u305f\u3061\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u304a\u5ba2\u69d8\u3001\u305d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u3001\u305d\u3057\u3066\u30d3\u30b8\u30cd\u30b9\u306b\u3068\u3063\u3066\u3069\u308c\u307b\u3069\u91cd\u8981\u3067\u3042\u308b\u304b\u3092\u7406\u89e3\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u304c\u591a\u304f\u306e\u304a\u5ba2\u69d8\u306b\u91cd\u5927\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u305f\u3053\u3068\u3092\u627f\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u305f\u3061\u306f\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u304b\u3089\u5b66\u3076\u305f\u3081\u306b\u3067\u304d\u308b\u9650\u308a\u306e\u3053\u3068\u3092\u884c\u3044\u3001\u305d\u308c\u3092\u6d3b\u7528\u3057\u3066\u53ef\u7528\u6027\u3092\u3055\u3089\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u300d\u3068\u8b1d\u7f6a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/i.gzn.jp\/img\/2025\/10\/25\/aws-incident-amazon-dynamodb-dns\/04_m.jpg\" border=\"0\" alt=\"\" class=\"lazyload\"\/><\/p>\n<p class=\"preface\">\n<br 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