{"id":30406,"date":"2026-02-26T15:26:02","date_gmt":"2026-02-26T07:26:02","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/how-to-locate-network-packet-loss-in-a-kubernetes-cluster\/"},"modified":"2026-02-26T15:34:32","modified_gmt":"2026-02-26T07:34:32","slug":"how-to-locate-network-packet-loss-in-a-kubernetes-cluster","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/how-to-locate-network-packet-loss-in-a-kubernetes-cluster\/","title":{"rendered":"\u5982\u4f55\u5b9a\u4f4d Kubernetes \u53e2\u96c6\u4e2d\u7684\u7db2\u8def\u5c01\u5305\u907a\u5931"},"content":{"rendered":"<p>\u4f60\u53ef\u4ee5\u900f\u904e\u56de\u61c9\u7de9\u6162\u3001\u9023\u7dda\u4e2d\u65b7\u7b49\u7570\u5e38\u8de1\u8c61\uff0c\u5b9a\u4f4d <a href=\"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/fix-kubernetes-services-timing-out-multiple-worker-nodes\/\" target=\"_blank\">Kubernetes\u53e2\u96c6<\/a>\u4e2d\u7684<a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/hk\/\" target=\"_blank\">\u7db2\u8def\u5c01\u5305\u907a\u5931<\/a>\u554f\u984c\u3002\u5c01\u5305\u907a\u5931\u6703\u5c0e\u81f4\u61c9\u7528\u7a0b\u5f0f\u884c\u70ba\u7570\u5e38\u751a\u81f3\u7121\u6cd5\u6b63\u5e38\u904b\u4f5c\uff0c\u4f7f\u7528\u8005\u53ef\u80fd\u56de\u5831\u8acb\u6c42\u903e\u6642\u3001\u670d\u52d9\u7121\u6cd5\u9023\u7dda\u7b49\u554f\u984c\u3002\u5118\u65e9\u5b9a\u4f4d\u9019\u985e\u554f\u984c\uff0c\u80fd\u4fdd\u969c\u61c9\u7528\u7a0b\u5f0f\u7a69\u5b9a\u904b\u884c\u3002\u6301\u7e8c\u95dc\u6ce8\u7db2\u8def\u72c0\u614b\uff0c\u6309\u7167\u6392\u67e5\u6b65\u9a5f\u627e\u5230\u5c01\u5305\u907a\u5931\u4f4d\u7f6e\u3002<\/p>\n<h2>\u6392\u67e5 Kubernetes \u53e2\u96c6\u4e2d\u7684\u7db2\u8def\u5c01\u5305\u907a\u5931<\/h2>\n<h3>\u7db2\u8def\u5c01\u5305\u907a\u5931\u7684\u8868\u73fe\u75c7\u72c0<\/h3>\n<p>\u7db2\u8def\u5c01\u5305\u907a\u5931\u6703\u5c0e\u81f4\u61c9\u7528\u7a0b\u5f0f\u904b\u884c\u7de9\u6162\u6216\u76f4\u63a5\u5931\u6548\uff0c\u4f7f\u7528\u8005\u53ef\u80fd\u9047\u5230\u9023\u7dda\u4e2d\u65b7\u3001\u8acb\u6c42\u903e\u6642\u7b49\u60c5\u6cc1\u3002\u90e8\u5206\u670d\u52d9\u7121\u6cd5\u5efa\u7acb\u9023\u7dda\uff0c\u8cc7\u6599\u50b3\u8f38\u4e0d\u5b8c\u6574\uff0c\u65e5\u8a8c\u4e2d\u51fa\u73fe\u96a8\u6a5f\u932f\u8aa4\uff0c\u751a\u81f3\u90e8\u5206\u8acb\u6c42\u7121\u6cd5\u9001\u9054\u3002\u767c\u73fe\u9019\u985e\u554f\u984c\u5f8c\u9700\u53ca\u6642\u8655\u7406\uff0c\u7db2\u8def\u5c01\u5305\u907a\u5931\u6703\u63a9\u84cb\u771f\u5be6\u6545\u969c\u6839\u6e90\uff0c\u589e\u52a0\u6392\u67e5\u96e3\u5ea6\u3002<\/p>\n<h3>\u9700\u76e3\u63a7\u7684\u6838\u5fc3\u6307\u6a19<\/h3>\n<p>\u5b9a\u4f4d\u53e2\u96c6\u5c01\u5305\u907a\u5931\u9700\u95dc\u6ce8\u591a\u9805\u6307\u6a19\uff0c\u6301\u7e8c\u76e3\u63a7\u9019\u4e9b\u6578\u64da\u80fd\u5728\u5c01\u5305\u907a\u5931\u5f71\u97ff\u61c9\u7528\u7a0b\u5f0f\u524d\u63d0\u524d\u767c\u73fe\u554f\u984c\u3002\u5efa\u8b70\u9577\u671f\u76e3\u63a7\u53e2\u96c6\u6548\u80fd\uff0c\u4e26\u5c07\u5c01\u5305\u907a\u5931\u6578\u64da\u8207\u8cc7\u6e90\u4f54\u7528\u7b49\u6548\u80fd\u6307\u6a19\u5c0d\u6bd4\uff0c\u5168\u9762\u638c\u63e1\u7db2\u8def\u5065\u5eb7\u72c0\u614b\u3002<\/p>\n<ul>\n<li>\n<p>\u5c01\u5305\u907a\u5931\u7387<\/p>\n<\/li>\n<li>\n<p>\u7db2\u8def\u5ef6\u9072<\/p>\n<\/li>\n<li>\n<p>\u91cd\u65b0\u50b3\u8f38\u6b21\u6578<\/p>\n<\/li>\n<li>\n<p>\u5c01\u5305\u907a\u5931\u6578\u91cf<\/p>\n<\/li>\n<li>\n<p>\u7db2\u8def\u5361\u932f\u8aa4\u7387<\/p>\n<\/li>\n<li>\n<p>CPU \u4f7f\u7528\u7387<\/p>\n<\/li>\n<li>\n<p>\u8a18\u61b6\u9ad4\u4f7f\u7528\u7387<\/p>\n<\/li>\n<li>\n<p>\u9023\u7dda\u91cd\u8a2d\u6b21\u6578<\/p>\n<\/li>\n<li>\n<p>\u670d\u52d9\u56de\u61c9\u6642\u9593<\/p>\n<\/li>\n<\/ul>\n<p>\u53ef\u900f\u904e\u76e3\u63a7\u5de5\u5177\u5373\u6642\u67e5\u770b\u4e0a\u8ff0\u6307\u6a19\uff0c\u4e0b\u8868\u5217\u51fa\u5169\u6b3e\u53ef\u7528\u65bc\u76e3\u63a7 Kubernetes \u53e2\u96c6\u5c01\u5305\u907a\u5931\u7684\u5de5\u5177\uff1a<\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 75px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u5de5\u5177\u540d\u7a31<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8aaa\u660e<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u9023\u7d50<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>gala-gopher<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u652f\u63f4\u81ea\u8a02\u8a2d\u5b9a\u7684\u7db2\u8def\u5c01\u5305\u907a\u5931\u76e3\u63a7\u5de5\u5177<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>gala-gopher \u6587\u4ef6<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>perftest<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u652f\u63f4\u5373\u6642\u6548\u80fd\u76e3\u63a7\u7684\u6e2c\u8a66\u5de5\u5177<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>perftest \u6587\u4ef6<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>\u4f7f\u7528\u8a3a\u65b7\u5de5\u5177\u5b9a\u4f4d\u7db2\u8def\u5c01\u5305\u907a\u5931<\/h2>\n<p>\u53ef\u900f\u904e\u5c08\u696d\u8a3a\u65b7\u5de5\u5177\u5b9a\u4f4d\u7db2\u8def\u5c01\u5305\u907a\u5931\uff0c\u9019\u985e\u5de5\u5177\u80fd\u8ffd\u8e64\u5c01\u5305\u5728\u7db2\u8def\u93c8\u8def\u4e2d\u7684\u50b3\u8f38\u8def\u5f91\uff0c\u7cbe\u6e96\u5b9a\u4f4d\u9023\u7dda\u4e2d\u65b7\u7684\u7bc0\u9ede\u3002\u5e38\u7528\u5de5\u5177\u5305\u62ec traceroute\u3001MTR\u3001tcpdump\u3001KubeSkoop\u3001FlowCollector\uff0c\u4e0d\u540c\u5de5\u5177\u53ef\u63d0\u4f9b\u591a\u7dad\u5ea6\u6578\u64da\uff0c\u5e6b\u52a9\u5b9a\u4f4d\u7db2\u8def\u74f6\u9838\u3002<\/p>\n<h3>\u4f7f\u7528 Traceroute \u548c MTR<\/h3>\n<p>Traceroute \u53ef\u5c55\u793a\u5f9e Pod \u5230\u76ee\u6a19\u4f4d\u5740\u7684\u7db2\u8def\u50b3\u8f38\u8def\u5f91\uff0c\u6e05\u6670\u5448\u73fe\u6bcf\u4e00\u8df3\u7bc0\u9ede\u7684\u50b3\u8f38\u8017\u6642\u8207\u7bc0\u9ede\u6578\u91cf\uff0c\u900f\u904e\u6578\u64da\u80fd\u767c\u73fe\u5c01\u5305\u5ef6\u9072\u6216\u907a\u5931\u7684\u7bc0\u9ede\uff0c\u5b9a\u4f4d\u7db2\u8def\u58c5\u585e\u3001\u6d41\u91cf\u904e\u8f09\u7b49\u554f\u984c\u3002\u82e5\u67d0\u4e00\u8df3\u7bc0\u9ede\u5ef6\u9072\u986f\u8457\u5347\u9ad8\uff0c\u5373\u53ef\u9396\u5b9a\u6545\u969c\u6392\u67e5\u7bc4\u570d\u3002<\/p>\n<p>MTR \u6574\u5408\u4e86 traceroute \u8207 ping \u7684\u529f\u80fd\uff0c\u53ef\u6301\u7e8c\u76e3\u63a7\u7db2\u8def\u8def\u5f91\uff0c\u5373\u6642\u5c55\u793a\u6bcf\u4e00\u8df3\u7bc0\u9ede\u7684\u50b3\u8f38\u6578\u64da\uff0c\u5e6b\u52a9\u5b9a\u4f4d\u7db2\u8def\u74f6\u9838\u53ca\u5c01\u5305\u907a\u5931\u5e38\u898b\u8a98\u56e0\uff0c\u5982\u7db2\u8def\u58c5\u585e\u3001\u8def\u7531\u8a2d\u5099\u7570\u5e38\u7b49\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u5728 Kubernetes Pod \u4e2d\u4f7f\u7528 traceroute \u7684\u793a\u4f8b\u547d\u4ee4\uff1a<\/p>\n<pre><code>kubectl exec -it &lt;pod-name&gt; -- traceroute &lt;destination-ip&gt;\r\n<\/code><\/pre>\n<p>\u5206\u6790 traceroute \u7d50\u679c\u53ef\u627e\u5230\u5c01\u5305\u907a\u5931\u8d77\u59cb\u7bc0\u9ede\uff0c\u91cd\u9ede\u95dc\u6ce8\u5ef6\u9072\u904e\u9ad8\u6216\u7121\u56de\u61c9\u7684\u8df3\u9ede\uff0c\u4f9d\u6258\u6578\u64da\u5feb\u901f\u89e3\u6c7a\u554f\u984c\u3002Traceroute \u8207 MTR \u53ef\u6709\u6548\u5b9a\u4f4d\u7db2\u8def\u5c01\u5305\u907a\u5931\uff0c\u512a\u5316\u53e2\u96c6\u9023\u7dda\u54c1\u8cea\u3002<\/p>\n<h3>\u4f7f\u7528 Tcpdump \u64f7\u53d6\u6d41\u91cf<\/h3>\n<p>Tcpdump \u53ef\u64f7\u53d6\u539f\u59cb\u7db2\u8def\u6d41\u91cf\u4e26\u5206\u6790\u5c01\u5305\u907a\u5931\u554f\u984c\uff0c\u53ef\u505a\u70ba\u5074\u8eca\u5bb9\u5668\u8207\u696d\u52d9 Pod \u90e8\u7f72\uff0c\u91dd\u5c0d\u6307\u5b9a\u7db2\u8def\u5361\u64f7\u53d6\u6d41\u91cf\uff0c\u751f\u6210\u5e36\u6642\u9593\u6233\u8a18\u7684 PCAP \u6a94\u6848\u7528\u65bc\u5f8c\u7e8c\u5206\u6790\u3002<\/p>\n<p>Tcpdump \u53ef\u5373\u6642\u76e3\u63a7\u9023\u7dda\u72c0\u614b\uff0c\u5b9a\u4f4d\u7db2\u8def\u58c5\u585e\u3001\u6d41\u91cf\u904e\u8f09\u7b49\u5e38\u898b\u8a98\u56e0\uff0c\u9084\u80fd\u67e5\u770b\u91cd\u65b0\u50b3\u8f38\u7b49\u95dc\u9375\u6578\u64da\uff0c\u900f\u904e\u6df1\u5ea6\u6d41\u91cf\u5206\u6790\u5b9a\u4f4d\u5c01\u5305\u907a\u5931\u6839\u6e90\u3002<\/p>\n<ul>\n<li>\n<p>Tcpdump \u53ef\u64f7\u53d6\u539f\u59cb\u7db2\u8def\u6d41\u91cf<\/p>\n<\/li>\n<li>\n<p>SEPP \u8cc7\u6599\u64f7\u53d6\u6a21\u7d44\u53ef\u751f\u6210\u5e36\u6642\u9593\u6233\u8a18\u7684 PCAP \u6a94\u6848<\/p>\n<\/li>\n<li>\n<p>\u900f\u904e\u5206\u6790\u6a94\u6848\u53ef\u5b9a\u4f4d\u5c01\u5305\u907a\u5931\u554f\u984c<\/p>\n<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u662f\u5728 Kubernetes Pod \u4e2d\u57f7\u884c tcpdump \u7684\u793a\u4f8b\u547d\u4ee4\uff1a<\/p>\n<pre><code>kubectl exec -it &lt;pod-name&gt; -- tcpdump -i eth0 -w \/tmp\/capture.pcap\r\n<\/code><\/pre>\n<p>\u53ef\u900f\u904e Grafana \u5c55\u793a tcpdump \u53ca\u5176\u4ed6\u7db2\u8def\u5de5\u5177\u7684\u76e3\u63a7\u6578\u64da\uff0c\u914d\u7f6e\u8b66\u793a\u898f\u5247\u53ca\u6642\u767c\u73fe\u9023\u7dda\u7570\u5e38\u3002Tcpdump \u53ef\u52a9\u529b\u5b9a\u4f4d\u4e26\u89e3\u6c7a Kubernetes \u7db2\u8def\u5c01\u5305\u907a\u5931\u554f\u984c\u3002<\/p>\n<h3>\u900f\u904e KubeSkoop \u548c FlowCollector \u76e3\u63a7<\/h3>\n<p>KubeSkoop \u8207 FlowCollector \u53ef\u5f9e Pod \u7dad\u5ea6\u76e3\u63a7\u7db2\u8def\u6578\u64da\uff0c\u5b9a\u4f4d\u5c01\u5305\u907a\u5931\u554f\u984c\u3002KubeSkoop \u57fa\u65bc eBPF \u5be6\u73fe\u5373\u6642\u76e3\u63a7\uff0c\u53ef\u7cbe\u6e96\u5b9a\u4f4d\u6545\u969c\u7bc0\u9ede\uff0c\u652f\u63f4\u5168\u93c8\u8def\u5075\u6e2c\u8207\u5ef6\u9072\u6e2c\u8a66\u3002<\/p>\n<p>FlowCollector \u53ef\u8ffd\u8e64\u7db2\u8def\u8def\u5f91\u3001\u63a1\u96c6\u76e3\u63a7\u6578\u64da\u7528\u65bc\u5c01\u5305\u907a\u5931\u5206\u6790\uff0c\u67e5\u770b\u53e2\u96c6\u5167\u5168\u93c8\u8def\u9023\u7dda\u72c0\u614b\u3002\u5169\u6b3e\u5de5\u5177\u5747\u53ef\u5b9a\u4f4d\u7db2\u8def\u74f6\u9838\u8207\u5c01\u5305\u907a\u5931\u5e38\u898b\u8a98\u56e0\u3002<\/p>\n<ul>\n<li>\n<p>KubeSkoop \u53ef\u81ea\u52d5\u8b58\u5225\u5bb9\u5668\u7570\u5e38<\/p>\n<\/li>\n<li>\n<p>\u5feb\u901f\u5075\u6e2c DNS \u7570\u5e38\u8207\u670d\u52d9\u6545\u969c<\/p>\n<\/li>\n<li>\n<p>\u5373\u6642\u76e3\u63a7\u7db2\u8def\u6296\u52d5\u3001\u5ef6\u9072\u8207\u5c01\u5305\u907a\u5931<\/p>\n<\/li>\n<li>\n<p>KubeSkoop exporter \u57fa\u65bc eBPF\u3001procfs\u3001netlink \u5be6\u73fe Pod \u7d1a\u7db2\u8def\u76e3\u63a7<\/p>\n<\/li>\n<li>\n<p>\u63d0\u4f9b\u76e3\u63a7\u6307\u6a19\u8207\u4e8b\u4ef6\u8a18\u9304<\/p>\n<\/li>\n<\/ul>\n<p>\u4e0b\u8868\u70ba KubeSkoop \u8207 FlowCollector \u529f\u80fd\u5c0d\u6bd4\uff1a<\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 75px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u5de5\u5177<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6838\u5fc3\u529f\u80fd<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u9069\u7528\u5834\u666f<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>KubeSkoop<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5373\u6642\u76e3\u63a7\u3001eBPF \u6280\u8853\u3001\u4e8b\u4ef6\u8a18\u9304<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5b9a\u4f4d\u5c01\u5305\u907a\u5931\u3001\u6545\u969c\u8a3a\u65b7<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>FlowCollector<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u8def\u5f91\u8ffd\u8e64\u3001\u6307\u6a19\u63a1\u96c6\u3001\u53ef\u8996\u5316\u5c55\u793a<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6301\u7e8c\u8def\u5f91\u76e3\u63a7\u3001\u74f6\u9838\u5b9a\u4f4d<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>\u6392\u67e5\u8207\u89e3\u6c7a\u7db2\u8def\u5c01\u5305\u907a\u5931\u554f\u984c<\/h2>\n<h3>\u5206\u6790\u65e5\u8a8c\u8207\u7cfb\u7d71\u6307\u6a19<\/h3>\n<p>\u6392\u67e5\u5c01\u5305\u907a\u5931\u53ef\u5148\u5f9e\u65e5\u8a8c\u8207\u7cfb\u7d71\u6307\u6a19\u5165\u624b\uff0c\u6aa2\u67e5 Pod 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rowspan=\"1\">\n<p>\u767c\u73fe\u8a18\u61b6\u9ad4\u3001CPU\u3001\u78c1\u789f\u3001\u6838\u5fc3\u7b49\u5c64\u9762\u7684\u7bc0\u9ede\u554f\u984c<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>YAML \u9a57\u8b49<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u9a57\u8b49\u5de5\u4f5c\u8ca0\u8f09\u8a2d\u5b9a\u662f\u5426\u7b26\u5408\u6700\u4f73\u5be6\u52d9<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u63d0\u524d\u767c\u73fe\u6545\u969c\u3001\u6301\u7e8c\u76e3\u63a7\u72c0\u614b\u8b8a\u5316\uff0c\u53ef\u63d0\u5347\u7db2\u8def\u7a69\u5b9a\u6027\u8207\u53ef\u9760\u5ea6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f60\u53ef\u4ee5\u900f\u904e\u56de\u61c9\u7de9\u6162\u3001\u9023\u7dda\u4e2d\u65b7\u7b49\u7570\u5e38\u8de1\u8c61\uff0c\u5b9a\u4f4d Kubernetes\u53e2\u96c6\u4e2d\u7684\u7db2\u8def\u5c01\u5305\u907a\u5931\u554f\u984c\u3002\u5c01\u5305\u907a\u5931\u6703\u5c0e\u81f4\u61c9\u7528 [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/how-to-locate-network-packet-loss-in-a-kubernetes-cluster\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":12,"featured_media":30403,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[267],"tags":[],"class_list":["post-30406","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-tc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5982\u4f55\u5b9a\u4f4d Kubernetes \u53e2\u96c6\u4e2d\u7684\u7db2\u8def\u5c01\u5305\u907a\u5931<\/title>\n<meta name=\"description\" content=\"\u4f7f\u7528 traceroute\u3001tcpdump \u53ca\u76e3\u63a7\u5de5\u5177\u5b9a\u4f4d Kubernetes 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