{"id":1057,"date":"2026-06-09T03:17:16","date_gmt":"2026-06-08T19:17:16","guid":{"rendered":"https:\/\/www.loongdi.net\/blog\/?p=1057"},"modified":"2026-06-09T03:17:16","modified_gmt":"2026-06-08T19:17:16","slug":"kdump%ef%bc%82%e6%93%8d%e4%bd%9c%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.loongdi.net\/blog\/1057.html","title":{"rendered":"kdump\uff02\u64cd\u4f5c\u65b9\u6cd5"},"content":{"rendered":"<p><h2>\u300akdump\u300b\u6280\u672f\u7b80\u4ecb\u4e0e\u64cd\u4f5c\u6b65\u9aa4<\/h2>\n<\/p>\n<p><h3>1. \u6280\u672f\u6982\u8ff0<\/h3>\n<\/p>\n<p>kdump \u662f Linux \u7cfb\u7edf\u5185\u6838\u5d29\u6e83\u5206\u6790\u7684\u4e00\u79cd\u5de5\u5177\uff0c\u5b83\u53ef\u4ee5\u5728\u7cfb\u7edf\u5d29\u6e83\u65f6\u81ea\u52a8\u6536\u96c6\u6838\u5fc3\u8f6c\u50a8\u4fe1\u606f\u3002\u901a\u8fc7\u8fd9\u4e9b\u4fe1\u606f\uff0c\u5f00\u53d1\u8005\u548c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u66f4\u597d\u5730\u4e86\u89e3\u5d29\u6e83\u7684\u539f\u56e0\uff0c\u5e76\u4fee\u590d\u76f8\u5e94\u7684\u7f3a\u9677\u3002kdump \u4f7f\u7528 Live Kernel Patching\uff08LKP\uff09\u6280\u672f\uff0c\u53ef\u4ee5\u5728\u4e0d\u91cd\u542f\u7cfb\u7edf\u7684\u60c5\u51b5\u4e0b\uff0c\u5bf9\u6b63\u5728\u8fd0\u884c\u7684\u5185\u6838\u8fdb\u884c\u8f6c\u50a8\u3002<\/p>\n<p><h3>2. \u672c\u6587\u4efb\u52a1<\/h3>\n<\/p>\n<p>\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5728\u57fa\u4e8e RHEL\/CentOS \u7cfb\u7edf\u4e0a\u5b89\u88c5\u548c\u914d\u7f6e kdump\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u547d\u4ee4\u793a\u4f8b\u53ca\u89e3\u91ca\u3002\u540c\u65f6\uff0c\u8fd8\u5c06\u5206\u4eab\u4e00\u4e9b\u6ce8\u610f\u4e8b\u9879\u548c\u5b9e\u7528\u6280\u5de7\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u4f7f\u7528 kdump\u3002<\/p>\n<p><h3>3. \u5b89\u88c5 kdump<\/h3>\n<\/p>\n<p>\u5728 RHEL\/CentOS \u7cfb\u7edf\u4e0a\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5 kdump\uff1a<\/p>\n<p><pre><code>yum install kdump kdump-tools<\/p>\r\n<p><\/code><\/pre>\n<\/p>\n<p><h3>4. \u914d\u7f6e kdump<\/h3>\n<\/p>\n<p><h4>4.1 \u914d\u7f6e kdump \u9009\u9879<\/h4>\n<\/p>\n<p>\u9996\u5148\uff0c\u7f16\u8f91 \/etc\/kdump.conf \u6587\u4ef6\uff0c\u914d\u7f6e kdump \u7684\u57fa\u672c\u9009\u9879\uff1a<\/p>\n<p><pre><code>vim \/etc\/kdump.conf<\/p>\r\n<p><\/code><\/pre>\n<\/p>\n<p>\u4ee5\u4e0b\u662f kdump.conf \u6587\u4ef6\u4e2d\u7684\u5173\u952e\u914d\u7f6e\u9879\uff1a<\/p>\n<ul>\n<li><strong>dump_target<\/strong>: \u6307\u5b9a\u6838\u5fc3\u8f6c\u50a8\u7684\u5b58\u50a8\u4f4d\u7f6e\uff0c\u4f8b\u5982\u786c\u76d8\u5206\u533a\u3001NFS\u3001FTP \u6216 HTTP\u3002<\/li>\n<li><strong>kernel<\/strong>: \u6307\u5b9a\u7528\u4e8e\u8f6c\u50a8\u7684\u5185\u6838\u7248\u672c\u3002<\/li>\n<li><strong>dump_filter<\/strong>: \u63a7\u5236\u54ea\u4e9b\u8fdb\u7a0b\u5728\u8f6c\u50a8\u8fc7\u7a0b\u4e2d\u88ab\u8fc7\u6ee4\uff0c\u4f8b\u5982\u53ea\u8f6c\u50a8\u7cfb\u7edf\u8fdb\u7a0b\u3002<\/li>\n<\/ul>\n<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.loongdi.net\/blog\/wp-content\/uploads\/2026\/03\/zGRQT.jpg\" alt=\"kdump\uff02\u64cd\u4f5c\u65b9\u6cd5\" title=\"kdump\uff02\u64cd\u4f5c\u65b9\u6cd5\"><\/p>\n<p><h4>4.2 \u542f\u7528 kdump \u670d\u52a1<\/h4>\n<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u542f\u7528 kdump \u670d\u52a1\uff0c\u4ee5\u4fbf\u5728\u7cfb\u7edf\u5d29\u6e83\u65f6\u81ea\u52a8\u542f\u52a8\u8f6c\u50a8\uff1a<\/p>\n<p><pre><code>systemctl enable kdump<\/p>\r\n<p><\/code><\/pre>\n<\/p>\n<p><h4>4.3 \u8bbe\u7f6e kdump \u4f18\u5148\u7ea7<\/h4>\n<\/p>\n<p>\u4e3a kdump \u670d\u52a1\u8bbe\u7f6e\u9ad8\u4f18\u5148\u7ea7\uff0c\u4ee5\u786e\u4fdd\u5728\u7cfb\u7edf\u5d29\u6e83\u65f6\uff0ckdump \u670d\u52a1\u80fd\u591f\u83b7\u5f97\u8db3\u591f\u7684\u7cfb\u7edf\u8d44\u6e90\uff1a<\/p>\n<p><pre><code>systemctl setpriority --runtime -5 kdump<\/p>\r\n<p><\/code><\/pre>\n<\/p>\n<p><h3>5. \u6d4b\u8bd5 kdump<\/h3>\n<\/p>\n<p>\u5728\u914d\u7f6e kdump \u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6d4b\u8bd5\u5176\u529f\u80fd\uff1a<\/p>\n<p><pre><code>kdumpctl dump<\/p>\r\n<p><\/code><\/pre>\n<\/p>\n<p>\u6b64\u547d\u4ee4\u5c06\u6a21\u62df\u7cfb\u7edf\u5d29\u6e83\uff0c\u5e76\u542f\u52a8 kdump \u8f6c\u50a8\u8fc7\u7a0b\u3002\u8f6c\u50a8\u5b8c\u6210\u540e\uff0c\u53ef\u4ee5\u68c0\u67e5 \/var\/crash \u76ee\u5f55\u4e2d\u7684\u6838\u5fc3\u8f6c\u50a8\u6587\u4ef6\u3002<\/p>\n<p><h3>6. \u6ce8\u610f\u4e8b\u9879\u548c\u5b9e\u7528\u6280\u5de7<\/h3>\n<\/p>\n<ul>\n<li>\u786e\u4fdd kdump \u670d\u52a1\u7684\u5b58\u50a8\u7a7a\u95f4\u8db3\u591f\u5927\uff0c\u4ee5\u4fbf\u5b58\u50a8\u6838\u5fc3\u8f6c\u50a8\u6587\u4ef6\u3002<\/li>\n<li>\u6839\u636e\u5b9e\u9645\u9700\u6c42\u8c03\u6574 kdump \u7684\u914d\u7f6e\u9879\uff0c\u4f8b\u5982\u8bbe\u7f6e\u5408\u9002\u7684\u5185\u6838\u7248\u672c\u548c\u8f6c\u50a8\u76ee\u6807\u3002<\/li>\n<li>\u5728\u7cfb\u7edf\u8fd0\u884c\u671f\u95f4\uff0c\u907f\u514d\u5bf9 kdump \u8fdb\u884c\u4fee\u6539\uff0c\u4ee5\u514d\u5f71\u54cd\u5176\u7a33\u5b9a\u6027\u3002<\/li>\n<li>\u5b9a\u671f\u68c0\u67e5 kdump \u7684\u65e5\u5fd7\u6587\u4ef6\uff0c\u4ee5\u786e\u4fdd\u5176\u6b63\u5e38\u8fd0\u884c\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u60a8\u53ef\u4ee5\u5728 RHEL\/CentOS \u7cfb\u7edf\u4e0a\u6210\u529f\u5b89\u88c5\u548c\u914d\u7f6e kdump\u3002\u4f7f\u7528 kdump \u53ef\u4ee5\u6709\u6548\u5730\u6536\u96c6\u6838\u5fc3\u8f6c\u50a8\u4fe1\u606f\uff0c\u4e3a\u7cfb\u7edf\u5d29\u6e83\u5206\u6790\u63d0\u4f9b\u6709\u529b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u300akdump\u300b\u6280\u672f\u7b80\u4ecb\u4e0e\u64cd\u4f5c\u6b65\u9aa4 1. \u6280\u672f\u6982\u8ff0 kdump \u662f Linux \u7cfb\u7edf\u5185\u6838\u5d29\u6e83\u5206\u6790\u7684\u4e00\u79cd\u5de5\u5177\uff0c\u5b83\u53ef\u4ee5\u5728\u7cfb\u7edf\u5d29\u6e83\u65f6\u81ea\u52a8\u6536\u96c6\u6838\u5fc3\u8f6c\u50a8\u4fe1\u606f\u3002\u901a\u8fc7\u8fd9\u4e9b\u4fe1\u606f\uff0c\u5f00\u53d1\u8005\u548c\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u66f4\u597d\u5730\u4e86\u89e3\u5d29\u6e83\u7684\u539f\u56e0\uff0c\u5e76\u4fee\u590d\u76f8\u5e94\u7684\u7f3a\u9677\u3002kdump \u4f7f\u7528 &#8230;<\/p>\n","protected":false},"author":1,"featured_media":110,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"topic":[],"class_list":["post-1057","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hw"],"_links":{"self":[{"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/posts\/1057","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/comments?post=1057"}],"version-history":[{"count":1,"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/posts\/1057\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/posts\/1057\/revisions\/1058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/media\/110"}],"wp:attachment":[{"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/media?parent=1057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/categories?post=1057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/tags?post=1057"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.loongdi.net\/blog\/wp-json\/wp\/v2\/topic?post=1057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}