如何在Linux上转储.NET Core应用程序 [英] How to Dump a .NET Core Application on Linux

问题描述

我有一个已移植到.NET Core的.NET应用程序.我正在Ubuntu 14.04上对其进行测试.

我试图弄清楚程序崩溃时如何获取.dmp文件或Linux等效文件.我打电话给Environment.FailFast，但据我所知，它不会像Windows那样生成.dmp文件.根据这种情况 Environment.FailFast应该正在创建转储，但如果找不到，则<. /p>

此外，我尝试使用gcore手动创建转储.这可以工作，但是生成转储需要很长时间(我的应用程序不是那么大)，并且当我将gdb指向我的应用程序dll时，我无法识别出它，因此我无法在gdb中获得正确的调用堆栈

在Linux上转储.NET Core应用程序的最佳方法是什么?

谢谢！

解决方案

Linux coredumps的生成由/proc/sys/kernel/core_pattern中的内容定义.如果某些信号(例如SIGSEGV或SIGQUIT)导致进程终止，则基本上将进程内存的映像写入该文件中.如果它以竖线符号|开头，则可以将其流式传输到进行转储分析的应用程序中.它记录在这里: http://man7.org/linux/man- pages/man5/core.5.html

如果您这样配置它: echo coredump > /proc/sys/kernel/core_pattern 它将名为coredump的文件写入当前目录.

如果您这样配置它: echo "/tmp/cores/core.%e.%p.%h.%t" > /proc/sys/kernel/core_pattern 它将创建一个类似于/tmp/cores/core.bash.8539.drehbahn-mbp.1236975953的文件(请参见 https://sigquit.wordpress.com/2009/03/13/the-core-pattern/)

正如其他人建议的那样，还设置ulimit -S -c unlimited以允许任何大小的核心转储.

这里是一篇博客文章，显示了如何在Linux下创建和分析.NET Core核心转储: http://blogs.microsoft.co.il/sasha/2017/02/26/analyzing-a-net-core-核心转储Linux/

I have a .NET application that I have ported to .NET Core. I am testing it on Ubuntu 14.04.

I am trying to figure out how to get a .dmp file or the Linux equivalent when the program crashes. I call Environment.FailFast but as far as I can tell this doesn't generate a .dmp file like it does on Windows. Acording to this case Environment.FailFast should be creating a dump but if it is I can't find it.

In addition I have tried manually creating a dump using gcore. This works however it takes a long time to generate the dump (my application isn't that big) and I am unable to get the correct callstacks in gdb after the fact as when I point gdb to my application dll it doesn't recognize it.

What it he best way to get a dump of a .NET Core application on Linux?

Thanks!

解决方案

The generation of linux coredumps is defined by what's in /proc/sys/kernel/core_pattern. If certain signals (e.g. SIGSEGV or SIGQUIT) cause a process to terminate, an image of the process's memory is basically written into that file. If it starts with a pipe-symbol |, it can be streamed into an application which does dump analysis. It's documented here: http://man7.org/linux/man-pages/man5/core.5.html

If you configure it like that: echo coredump > /proc/sys/kernel/core_pattern it will write a file named coredump into the current directory.

If you configure it like that: echo "/tmp/cores/core.%e.%p.%h.%t" > /proc/sys/kernel/core_pattern It will create a file like /tmp/cores/core.bash.8539.drehbahn-mbp.1236975953 (see https://sigquit.wordpress.com/2009/03/13/the-core-pattern/)

As others suggested, also set ulimit -S -c unlimited to allow coredumps of any size.

Here is a blog-post which shows how to create and analyze .NET Core coredumps under linux: http://blogs.microsoft.co.il/sasha/2017/02/26/analyzing-a-net-core-core-dump-on-linux/

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