docker - 使用 AspNetCore Api 设置 NLog 并使用 Docker 进行调试会持续抛出找不到文件错误
问题描述
我在使用 NLog、.NET Core 2.2 AspNet Api 项目和在 Visual Studio 2017 中调试 Docker 容器时遇到了一些问题。
我按照 NLog Github 站点上的设置指南，将代码添加到 Program Main 方法，创建了一个 nlog.config 文件：
var logger = NLog.Web.NLogBuilder.ConfigureNLog("nlog.config").GetCurrentClassLogger();
Debug.Write(logger);
try
{
logger.Debug("init main");
CreateWebHostBuilder(args).Build().Run();
}
catch (Exception ex)
{
//NLog: catch setup errors
logger.Error(ex, "Stopped program because of exception");
throw;
}
finally
{
// Ensure to flush and stop internal timers/threads before application-exit (Avoid segmentation fault on Linux)
NLog.LogManager.Shutdown();
}
该应用程序运行速度非常慢，配置记录器需要很长时间。但它最终会得到配置文件。
如果我在执行此操作时遵循输出，我会得到一个连续的错误消息列表，如下所示：
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Private.CoreLib.dll'. Cannot find or open the PDB file.
Loaded '/app/bin/Debug/netcoreapp2.2/SharpGaming.Api.Gateway.Ui.dll'. Symbols loaded.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Runtime.dll'. Module was built without symbols.
Loaded '/root/.nuget/fallbackpackages2/nlog/4.6.5/lib/netstandard2.0/NLog.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/netstandard.dll'. Module was built without symbols.
Loaded '/root/.nuget/fallbackpackages2/nlog.web.aspnetcore/4.8.3/lib/netstandard2.0/NLog.Web.AspNetCore.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Diagnostics.Debug.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.AspNetCore.App/2.2.5/Microsoft.AspNetCore.Hosting.Abstractions.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.AspNetCore.App/2.2.5/Microsoft.AspNetCore.Hosting.dll'. Cannot find or open the PDB file.
Step into: Stepping over property 'NLog.Config.ConfigurationItemFactory.get_Default'. To step into properties or operators, go to Tools->Options->Debugging and uncheck 'Step over properties and operators (Managed only)'.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Runtime.Extensions.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Collections.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.ComponentModel.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Diagnostics.TraceSource.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Net.Primitives.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Data.Common.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Net.Mail.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Threading.ThreadPool.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.IO.FileSystem.Watcher.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Net.Sockets.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.ComponentModel.TypeConverter.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Threading.Tasks.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Linq.Expressions.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Linq.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Diagnostics.Tools.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Private.Uri.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.IO.FileSystem.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Memory.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Buffers.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Threading.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Runtime.InteropServices.dll'. Module was built without symbols.
Loaded '/root/.nuget/fallbackpackages2/nlog.extensions.logging/1.5.1/lib/netstandard2.0/NLog.Extensions.Logging.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Xml.ReaderWriter.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Private.Xml.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Threading.Thread.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Security.Cryptography.Algorithms.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Text.Encoding.Extensions.dll'. Module was built without symbols.
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Collections.Specialized.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Drawing.Primitives.dll'. Cannot find or open the PDB file.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Threading.Timer.dll'. Module was built without symbols.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.ComponentModel.Primitives.dll'. Cannot find or open the PDB file.
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Collections.Concurrent.dll'. Cannot find or open the PDB file.
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Loaded '/usr/share/dotnet/shared/Microsoft.AspNetCore.App/2.2.5/Microsoft.AspNetCore.Http.Abstractions.dll'. Cannot find or open the PDB file.
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
这持续了几个例外
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Console.dll'. Cannot find or open the PDB file.
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/2.2.5/System.Diagnostics.StackTrace.dll'. Module was built without symbols.
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.IOException' in System.Private.CoreLib.dll
......还有更多。这只是配置记录器。
一旦记录器加载，它将继续执行此操作。
我想也许它是在 Debug 中运行的，但是 DockerFile 已经创建了一个 Release 包。所以我尝试改变它，让它作为 Release 或 Debug 运行，仍然做同样的事情。
部署到 docker 实例的代码不包括我所期望的 PDB 文件。
几乎就像 NLog dll 试图在 Debug 中运行一样，它应该在什么时候在 Release 中运行？
如果我删除 NLog 的设置代码，一切正常。我没有收到任何错误，并且应用程序在 docker 容器中运行平稳快速。
我正在为 Docker 使用 Windows 并创建 Linux Docker。
有人可以帮忙吗？
解决方案
我想到了...
nlog.config 文件指向 Windows 目录。
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
autoReload="true"
internalLogLevel="DEBUG"
internalLogFile="c:\log\apigateway\internal-nlog.txt"
throwExceptions="true">
删除这些行：
internalLogLevel="DEBUG"
internalLogFile="c:\log\apigateway\internal-nlog.txt"
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
autoReload="true"
throwExceptions="true">
停止抛出的错误。
我通过打开异常设置窗口发现了这一点：Debug > Windows > Exception Settings。转到公共语言运行时异常部分并检查“System.IO.IOException”异常。这样它就会抛出异常。
这给了我一个“无效参数”异常，堆栈跟踪：
at Interop.ThrowExceptionForIoErrno(ErrorInfo errorInfo, String path, Boolean isDirectory, Func`2 errorRewriter)
基本上告诉我目录可能有问题？
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