{"id":52322,"date":"2024-12-03T17:36:17","date_gmt":"2024-12-03T09:36:17","guid":{"rendered":"https:\/\/fwq.ai\/blog\/52322\/"},"modified":"2024-12-03T17:36:17","modified_gmt":"2024-12-03T09:36:17","slug":"linux-kdump%e7%9a%84%e4%bd%9c%e7%94%a8%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/52322\/","title":{"rendered":"linux kdump\u7684\u4f5c\u7528\u662f\u4ec0\u4e48"},"content":{"rendered":"

<\/b> <\/p>\n

linux kdump\u7684\u4f5c\u7528\u662f\u4ec0\u4e48<\/h1>\n

\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9\u6587\u7ae0<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587\u300alinux kdump\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~<\/p>\n<\/p>\n

\n

linux kdump\u7684\u4f5c\u7528\u5c31\u662f\u5728\u7cfb\u7edf\u5d29\u6e83\u3001\u6b7b\u9501\u6216\u8005\u6b7b\u673a\u7684\u65f6\u5019\u7528\u6765\u8f6c\u50a8\u5185\u5b58\u8fd0\u884c\u53c2\u6570\uff1b\u6bd4\u5982\uff0c\u7cfb\u7edf\u4e00\u65e6\u5d29\u6e83\uff0c\u90a3\u4e48\u6b63\u5e38\u7684\u5185\u6838\u5c31\u6ca1\u6709\u529e\u6cd5\u5de5\u4f5c\u4e86\uff0c\u5728\u8fd9\u4e2a\u65f6\u5019\u5c06\u7531kdump\u4ea7\u751f\u4e00\u4e2a\u7528\u4e8ecapture\u5f53\u524d\u8fd0\u884c\u4fe1\u606f\u7684\u5185\u6838\uff0c\u8be5\u5185\u6838\u4f1a\u5c06\u6b64\u65f6\u7684\u5185\u5b58\u4e2d\u7684\u6240\u6709\u8fd0\u884c\u72b6\u6001\u548c\u6570\u636e\u4fe1\u606f\u6536\u96c6\u5230\u4e00\u4e2adump core\u6587\u4ef6\u4e2d\u4ee5\u4fbf\u4e8eRed Hat\u5de5\u7a0b\u5e08\u5206\u6790\u5d29\u6e83\u539f\u56e0\uff0c\u4e00\u65e6\u5185\u5b58\u4fe1\u606f\u6536\u96c6\u5b8c\u6210\uff0c\u7cfb\u7edf\u5c06\u81ea\u52a8\u91cd\u542f\u3002<\/p>\n<\/blockquote>\n

kdump\u662f\u5728\u7cfb\u7edf\u5d29\u6e83\u3001\u6b7b\u9501\u6216\u8005\u6b7b\u673a\u7684\u65f6\u5019\u7528\u6765\u8f6c\u50a8\u5185\u5b58\u8fd0\u884c\u53c2\u6570\u7684\u4e00\u4e2a\u5de5\u5177\u548c\u670d\u52a1\u3002<\/p>\n

\u6253\u4e2a\u6bd4\u65b9\uff0c\u5982\u679c\u7cfb\u7edf\u4e00\u65e6\u5d29\u6e83\u90a3\u4e48\u6b63\u5e38\u7684\u5185\u6838\u5c31\u6ca1\u6709\u529e\u6cd5\u5de5\u4f5c\u4e86\uff0c\u5728\u8fd9\u4e2a\u65f6\u5019\u5c06\u7531kdump\u4ea7\u751f\u4e00\u4e2a\u7528\u4e8ecapture\u5f53\u524d\u8fd0\u884c\u4fe1\u606f\u7684\u5185\u6838\uff0c\u8be5\u5185\u6838\u4f1a\u5c06\u6b64\u65f6\u7684\u5185\u5b58\u4e2d\u7684\u6240\u6709\u8fd0\u884c\u72b6\u6001\u548c\u6570\u636e\u4fe1\u606f\u6536\u96c6\u5230\u4e00\u4e2adump core\u6587\u4ef6\u4e2d\u4ee5\u4fbf\u4e8eRed Hat\u5de5\u7a0b\u5e08\u5206\u6790\u5d29\u6e83\u539f\u56e0\uff0c\u4e00\u65e6\u5185\u5b58\u4fe1\u606f\u6536\u96c6\u5b8c\u6210\uff0c\u7cfb\u7edf\u5c06\u81ea\u52a8\u91cd\u542f\u3002\u8fd9\u548c\u4ee5\u524d\u7684diskdump\uff0cnetdump\u662f\u540c\u6837\u9053\u7406\u3002\u53ea\u4e0d\u8fc7kdump\u662fRHEL6\u7279\u6709\u7684\u3002<\/p>\n

\u67e5\u770bLinux\u7cfb\u7edf\u662f\u5426\u6253\u5f00kdump\uff1a<\/p>\n

\u6267\u884c\u547d\u4ee4\uff1aulimit -c \u5982\u679c\u8f93\u51fa\u4e3a 0 \uff0c\u5219\u4ee3\u8868\u6ca1\u6709\u6253\u5f00\u3002\u5982\u679c\u4e3aunlimited\u5219\u5df2\u7ecf\u6253\u5f00\u3002<\/p>\n

\u4e34\u65f6\u6253\u5f00\/\u5173\u95edLinux\u7684kdump\u65b9\u6cd5\uff1a<\/p>\n

ulimit -c unlimited \u6253\u5f00\uff1b<\/p>\n

ulimit -c 0 \u5173\u95ed\uff1b<\/p>\n

\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u8fdb\u884c\u6253\u5f00\/\u5173\u95edkdump\u65b9\u6cd5\uff1a<\/p>\n

    \n
  • \n

    vi \/etc\/profile\u6587\u4ef6\u5728\u6587\u4ef6\u672b\u5c3e\u52a0\u5165\u65b0\u884c\uff0culimit -S -c unlimited> \/dev\/null 2>&1<\/p>\n<\/li>\n

  • \n

    \u4fdd\u5b58\u9000\u51fa\uff1awq!<\/p>\n<\/li>\n

  • \n

    \u6267\u884c source \/etc\/profile \u4f7f\u5f53\u671f\u8bbe\u7f6e\u751f\u6548<\/p>\n<\/li>\n

  • \n

    \u901a\u8fc7ulimit -c \u67e5\u770b\u4e0b\u662f\u5426\u5df2\u7ecf\u6210\u529f\u6253\u5f00\u3002<\/p>\n<\/li>\n<\/ul>\n

    \u7cfb\u7edf\u5d29\u6e83\u65f6kdump\u6587\u4ef6\u4f4d\u7f6e\u53ca\u67e5\u770b\u65b9\u6cd5\uff1a<\/p>\n

    \u4fee\u6539\u751f\u6210\u7684\u65e5\u5fd7\u6587\u4ef6\u7684\u8def\u5f84\u5230\/var\/log\u4e0b<\/p>\n

    echo \u201c\/var\/log\u201d > \/proc\/sys\/kernel\/core_pattern<\/p>\n

    kdump\u6587\u4ef6\u540d\u4e3acore.xxxx<\/p>\n

    \u6267\u884cgdb core.xxx\u8fdb\u884c\u8c03\u8bd5\u3002<\/p>\n

    \u4eca\u5929\u5173\u4e8e\u300alinux kdump\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u7c73\u4e91\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

    linux kdump\u7684\u4f5c\u7528\u662f\u4ec0\u4e48 \u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9\u6587\u7ae0\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u6587\u7ae0\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587\u300alinux kdump\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\u300b\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~ linux kdump\u7684\u4f5c\u7528\u5c31\u662f\u5728\u7cfb\u7edf\u5d29\u6e83\u3001\u6b7b\u9501\u6216\u8005\u6b7b\u673a\u7684\u65f6\u5019\u7528\u6765\u8f6c\u50a8\u5185\u5b58\u8fd0\u884c\u53c2\u6570\uff1b\u6bd4\u5982\uff0c\u7cfb\u7edf\u4e00\u65e6\u5d29\u6e83\uff0c\u90a3\u4e48\u6b63\u5e38\u7684\u5185\u6838\u5c31\u6ca1\u6709\u529e\u6cd5\u5de5\u4f5c\u4e86\uff0c\u5728\u8fd9\u4e2a\u65f6\u5019\u5c06\u7531kdump\u4ea7\u751f\u4e00\u4e2a\u7528\u4e8ecapture\u5f53\u524d\u8fd0\u884c\u4fe1\u606f\u7684\u5185\u6838\uff0c\u8be5\u5185\u6838\u4f1a\u5c06\u6b64\u65f6\u7684\u5185\u5b58\u4e2d\u7684\u6240\u6709\u8fd0\u884c\u72b6\u6001\u548c\u6570\u636e\u4fe1\u606f\u6536\u96c6\u5230\u4e00\u4e2adump core\u6587\u4ef6\u4e2d\u4ee5\u4fbf\u4e8eRed Hat\u5de5\u7a0b\u5e08\u5206\u6790\u5d29\u6e83\u539f\u56e0\uff0c\u4e00\u65e6\u5185\u5b58\u4fe1\u606f\u6536\u96c6\u5b8c\u6210\uff0c\u7cfb\u7edf\u5c06\u81ea\u52a8\u91cd\u542f\u3002 kdump\u662f\u5728\u7cfb\u7edf\u5d29\u6e83\u3001\u6b7b\u9501\u6216\u8005\u6b7b\u673a\u7684\u65f6\u5019\u7528\u6765\u8f6c\u50a8\u5185\u5b58\u8fd0\u884c\u53c2\u6570\u7684\u4e00\u4e2a\u5de5\u5177\u548c\u670d\u52a1\u3002 \u6253\u4e2a\u6bd4\u65b9\uff0c\u5982\u679c\u7cfb\u7edf\u4e00\u65e6\u5d29\u6e83\u90a3\u4e48\u6b63\u5e38\u7684\u5185\u6838\u5c31\u6ca1\u6709\u529e\u6cd5\u5de5\u4f5c\u4e86\uff0c\u5728\u8fd9\u4e2a\u65f6\u5019\u5c06\u7531kdump\u4ea7\u751f\u4e00\u4e2a\u7528\u4e8ecapture\u5f53\u524d\u8fd0\u884c\u4fe1\u606f\u7684\u5185\u6838\uff0c\u8be5\u5185\u6838\u4f1a\u5c06\u6b64\u65f6\u7684\u5185\u5b58\u4e2d\u7684\u6240\u6709\u8fd0\u884c\u72b6\u6001\u548c\u6570\u636e\u4fe1\u606f\u6536\u96c6\u5230\u4e00\u4e2adump core\u6587\u4ef6\u4e2d\u4ee5\u4fbf\u4e8eRed Hat\u5de5\u7a0b\u5e08\u5206\u6790\u5d29\u6e83\u539f\u56e0\uff0c\u4e00\u65e6\u5185\u5b58\u4fe1\u606f\u6536\u96c6\u5b8c\u6210\uff0c\u7cfb\u7edf\u5c06\u81ea\u52a8\u91cd\u542f\u3002\u8fd9\u548c\u4ee5\u524d\u7684diskdump\uff0cnetdump\u662f\u540c\u6837\u9053\u7406\u3002\u53ea\u4e0d\u8fc7kdump\u662fRHEL6\u7279\u6709\u7684\u3002 \u67e5\u770bLinux\u7cfb\u7edf\u662f\u5426\u6253\u5f00kdump\uff1a \u6267\u884c\u547d\u4ee4\uff1aulimit -c \u5982\u679c\u8f93\u51fa\u4e3a 0 \uff0c\u5219\u4ee3\u8868\u6ca1\u6709\u6253\u5f00\u3002\u5982\u679c\u4e3aunlimited\u5219\u5df2\u7ecf\u6253\u5f00\u3002 \u4e34\u65f6\u6253\u5f00\/\u5173\u95edLinux\u7684kdump\u65b9\u6cd5\uff1a ulimit -c unlimited \u6253\u5f00\uff1b ulimit -c 0 \u5173\u95ed\uff1b \u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u8fdb\u884c\u6253\u5f00\/\u5173\u95edkdump\u65b9\u6cd5\uff1a vi \/etc\/profile\u6587\u4ef6\u5728\u6587\u4ef6\u672b\u5c3e\u52a0\u5165\u65b0\u884c\uff0culimit -S -c unlimited> \/dev\/null 2>&1 \u4fdd\u5b58\u9000\u51fa\uff1awq! \u6267\u884c source \/etc\/profile \u4f7f\u5f53\u671f\u8bbe\u7f6e\u751f\u6548 \u901a\u8fc7ulimit -c \u67e5\u770b\u4e0b\u662f\u5426\u5df2\u7ecf\u6210\u529f\u6253\u5f00\u3002 \u7cfb\u7edf\u5d29\u6e83\u65f6kdump\u6587\u4ef6\u4f4d\u7f6e\u53ca\u67e5\u770b\u65b9\u6cd5\uff1a \u4fee\u6539\u751f\u6210\u7684\u65e5\u5fd7\u6587\u4ef6\u7684\u8def\u5f84\u5230\/var\/log\u4e0b echo \u201c\/var\/log\u201d > \/proc\/sys\/kernel\/core_pattern kdump\u6587\u4ef6\u540d\u4e3acore.xxxx \u6267\u884cgdb core.xxx\u8fdb\u884c\u8c03\u8bd5\u3002 \u4eca\u5929\u5173\u4e8e\u300alinux kdump\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u7c73\u4e91\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-52322","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=52322"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52322\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=52322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=52322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=52322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}