linux 在没有系统日志消息的情况下崩溃

Question

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Answer 1

您可以使用内核模块“netconsole”，将内核 printk 消息发送到远程系统日志服务器。

然后您可以在远程系统日志服务器中查看日志消息，如果机器崩溃了。

Introduction:

This module logs kernel printk messages over UDP allowing debugging of problem where disk logging fails and serial consoles are impractical.

It can be used either built-in or as a module. As a built-in, netconsole initializes immediately after NIC cards and will bring up the specified interface as soon as possible. While this doesn't allow capture of early kernel panics, it does capture most of the boot process. Check kernel document for more information: https://www.kernel.org/doc/Documentation/networking/netconsole.txt