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如何在 Red Hat Enterprise Linux 中使用 kdump 对内核崩溃、挂起或重启进行故障排除

Solution Verified - Updated -

Issue

  • 如何在 RHEL 系统上配置 kexec/kdump?
  • 需要内核 panic / 服务器崩溃的根本原因分析(RCA)
  • 如何对意外重启进行排除故障和调查?
  • 如何在系统上生成内核内存内核转储(vmcore)?
  • 我们的系统进入到挂起状态或变得无响应,如何进行故障排除?
  • 捕获 vmcore 需要多长时间?
  • 产生 vmcore 需要多少磁盘空间?

Environment

  • Red Hat Enterprise Linux (RHEL)

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