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 上测试它.

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

我想知道如何在程序崩溃时获取 .dmp 文件或 Linux 等效文件.我调用 Environment.FailFast 但据我所知，这不会像在 Windows 上那样生成 .dmp 文件.根据 这种情况 Environment.FailFast 应该创建一个转储，但如果是我找不到.

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.

此外，我尝试使用 gcore 手动创建转储.这有效，但是生成转储需要很长时间(我的应用程序不是那么大)并且我无法在 gdb 中获得正确的调用堆栈，因为当我将 gdb 指向我的应用程序 dll 时它无法识别它.

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.

在 Linux 上获取 .NET Core 应用程序转储的最佳方法是什么?

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

谢谢！

推荐答案

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，则进程内存的映像基本上会写入该文件.如果它以管道符号 | 开头，则可以将其流式传输到执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

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

如果你这样配置:

   echo coredump > /proc/sys/kernel/core_pattern

它会将名为 coredump 的文件写入当前目录.

it will write a file named coredump into the current directory.

如果你这样配置:

   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(参见 https://sigquit.wordpress.com/2009/03/13/the-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/)

正如其他人所建议的，还要设置 ulimit -S -c unlimited 以允许任何大小的核心转储.

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

这是一篇博客文章，展示了如何在 linux 下创建和分析 .NET Core coredumps:http://blogs.microsoft.co.il/sasha/2017/02/26/analyzing-a-net-core-core-dump-on-linux/

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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