在 Kubernetes 上运行 dotnet core 3.0 docker 映像时出错

Question

重现问题的步骤

使用 dotnet

1. CLI 创建 webapi 项目模板(dotnet --version = 3.0.100(
2. 构建 dockerfile 以创建映像(请参阅下面的 dockerfile(
3. 在本地 docker 上运行 docker 镜像(工作正常(
4. 将此 docker 映像推送到 docker 注册表
5. 将其部署到 K8s 上(在 AWS 上使用 EKS(

预期行为

Pod 启动并运行 webapi

实际行为

Pod 无法启动，日志中出现以下错误：

terminate called after throwing an instance of 'boost::wrapexcept<util::AprException>'
what():  BaseException: Could not find the requested symbol. at /opt/jenkins/oa-s173/cmake-64-d/agent/native/shared/libutil/src/main/cpp/util/AprException.h:54 at static void util::AprException::check(apr_status_t)
at liboneagentdotnet.so [0x90ec22]
at liboneagentdotnet.so [0x90ed1b]
at liboneagentdotnet.so [0x90ed7c]
at liboneagentdotnet.so [0x143d61]
at liboneagentdotnet.so [0x144adb]
at unknown [0x7f4a024acee2]
at unknown [0x7f4a024accef]
at unknown [0x7f4a024a4e48]
at unknown [0x7f4a024acb40]
at unknown [0x7f4a024aca6c]
at unknown [0x7f4a024ac77a]
at unknown [0x7f4a024a3299]
at unknown [0x7f4a024a2dd1]
at unknown [0x7f4a024a2d4e]
at unknown [0x7f4a024a2425]
at unknown [0x7f4a020ac426]
at unknown [0x7f4a020aca3d]
at libcoreclr.so(CallDescrWorkerInternal+0x7b) [0x24dcae]
at libcoreclr.so(CallDescrWorkerWithHandler(CallDescrData*, int)+0x74) [0x17dfc4]
at libcoreclr.so(DispatchCallDebuggerWrapper(CallDescrData*, ContextTransitionFrame*, int)+0x86) [0x17e0b6]
at libcoreclr.so(DispatchCallSimple(unsigned long*, unsigned int, unsigned long, unsigned int)+0xb6) [0x17e236]
at libcoreclr.so(MethodTable::RunClassInitEx(Object**)+0x1a1) [0x115d61]
at libcoreclr.so(MethodTable::DoRunClassInitThrowing()+0x2f8) [0x1162e8]
at libcoreclr.so(JIT_GetSharedNonGCStaticBase_Helper+0xcf) [0x1b916f]
at unknown [0x7f4a020ac2ea]
at unknown [0x7f4a020ab4ec]
at unknown [0x7f4a020aadad]
at libcoreclr.so(CallDescrWorkerInternal+0x7b) [0x24dcae]
at libcoreclr.so(CallDescrWorkerWithHandler(CallDescrData*, int)+0x74) [0x17dfc4]
at libcoreclr.so(DispatchCallDebuggerWrapper(CallDescrData*, ContextTransitionFrame*, int)+0x86) [0x17e0b6]
at libcoreclr.so(DispatchCallSimple(unsigned long*, unsigned int, unsigned long, unsigned int)+0xb6) [0x17e236]
at libcoreclr.so(MethodTable::RunClassInitEx(Object**)+0x1a1) [0x115d61]
at libcoreclr.so(MethodTable::DoRunClassInitThrowing()+0x2f8) [0x1162e8]
at libcoreclr.so [0x29c00b]
at libcoreclr.so [0x2551cc]
at libcoreclr.so [0x2548c4]
at libcoreclr.so [0x2546b3]
at libcoreclr.so [0x29ba01]
at libcoreclr.so(MethodTable::EnsureInstanceActive()+0x92) [0x115a92]
at libcoreclr.so(MethodDesc::EnsureActive()+0x22) [0x109ae2]
at libcoreclr.so [0x262507]
at libcoreclr.so [0x26291f]
at libcoreclr.so(CorHost2::ExecuteAssembly(unsigned int, char16_t const*, int, char16_t const**, unsigned int*)+0x240) [0xcae90]
at libcoreclr.so(coreclr_execute_assembly+0xd3) [0xa3c63]
at libhostpolicy.so [0x161c2]
at libhostpolicy.so(corehost_main+0xcb) [0x16a1b]
at libhostfxr.so [0x2ab0f]
at libhostfxr.so [0x296a2]
at libhostfxr.so(hostfxr_main_startupinfo+0x92) [0x246f2]
at dotnet [0xc440]
at dotnet [0xc9fd]
at libc.so.6(__libc_start_main+0xea) [0x2409a]
at dotnet(_start+0x28) [0x2f3f]

其他信息

Docker文件如下：

FROM mcr.microsoft.com/dotnet/core/sdk:3.0 AS build-env
WORKDIR /build
COPY /src .
RUN dotnet restore
RUN dotnet build
RUN dotnet publish -c Release -o ./out
FROM mcr.microsoft.com/dotnet/core/aspnet:3.0
WORKDIR /app
COPY --from=build-env /build/out .
ENTRYPOINT ["dotnet", "Weather.dll"]

这只发生在 K8s 上是不寻常的，作为迁移到 dotnetcore 3.0 的一部分进行测试

在执行dotnet publish时指定runtime标志时，此行为不会更改。

docker version输出

Local docker for windows version: Docker version 19.03.2, build 6a30dfc
Container Runtime Version (on K8s):  docker://18.6.1

一般性评论

不完全确定这里的问题是什么，只要了解错误，我就很高兴。

Answer 1

这是由于 Dynatrace 不支持我们针对的 dotnet core 版本造成的。禁用此功能解决了问题。