Google App 引擎日志 "The specified framework 'Microsoft.AspNetCore.App', version '2.1.1' was not found."

Question

当运行我的 .net core 3.1 服务在 google 应用引擎灵活时，我会定期收到一系列错误，这些错误表面上与服务调用无关：

"The specified framework 'Microsoft.AspNetCore.App', version '2.1.1' was not found."
找到以下框架：
3.0.1 在 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]

这些错误大约每 3-4 分钟记录一次 - 无论服务是否被调用。

开发和运行时：

Visual Studio 2019 年 Windows 有 1 个 webapi 服务项目 (/api/values) 和一个 docker-compose 项目
.Net Core 3.1
Docker linux 容器
Google App Engine 灵活

我已经阅读了几篇关于此类错误的文章，但就我而言，我没有任何 2.1.1 参考资料或代码。我的目标是 .net 核心 3.1。我该如何解决？

本地"dotnet run"或"docker run"时不会出现错误。它们只出现在 GAE 环境中。 GAE 是否依赖于 2.1.1？或者是 3.1.1 不是 "supported"

我尝试过针对 multipe 框架，但这会在应用程序中产生各种引用问题。在任何情况下，该服务都能正常运行。另一方面，查看错误日志的同事会将其用作与服务相关的所有问题的替罪羊。

问题出在解决方案，docker文件，还是GAE？

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
WORKDIR /app
# EXPOSE 80
# EXPOSE 443
EXPOSE 8080
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
WORKDIR /src
ADD dev-certificate.pfx /usr/local/share/ca-certificates/dev-certificate.crt
RUN update-ca-certificates
COPY Xxxxx.Orchestrations.Cost/Xxxxx.Orchestrations.Cost.csproj Xxxxx.Orchestrations.Cost/
RUN dotnet restore "Xxxxx.Orchestrations.Cost/Xxxxx.Orchestrations.Cost.csproj"
COPY . .
WORKDIR "/src/Xxxx.Orchestrations.Cost"
RUN dotnet build "Xxxxx.Orchestrations.Cost.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "Xxxxx.Orchestrations.Cost.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
# CMD chmod /app/publish/dev-certificate.pfx +rrr


# ENV ASPNETCORE_ENVIRONMENT=Development
ENV ASPNETCORE_URLS=http://*:8080;https://*:443
ENV ASPNETCORE_HTTPS_PORT=443
ENV ASPNETCORE_Kestrel__Certificates__Default__Path=dev-certificate.pfx
ENV ASPNETCORE_Kestrel__Certificates__Default__Password=ufo
ENTRYPOINT ["dotnet", "Xxxxx.Orchestrations.Cost.dll"]

app.yaml

runtime: custom
env: flex


# This sample incurs costs to run on the App Engine flexible environment.
# The settings below are to reduce costs during testing and are not appropriate
# for production use. For more information, see:
# https://cloud.google.com/appengine/docs/flexible/python/configuring-your-app-with-app-yaml
manual_scaling:
  instances: 1

resources:
  cpu: 1
  memory_gb: 0.5
  disk_size_gb: 10

network:
    name: default
    subnetwork_name: default-us-east1

service: get-cost

env_variables:
  # The __ in My__Greeting will be translated to a : by ASP.NET.
  My__Greeting: Hello AppEngine Flex!

Answer 1

这种情况下的罪魁祸首是 ConfigureServices 方法中 StartUp class 的一行样板 VS 代码：

services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_3_0);

将代码更改为

services.AddMvc();

消除了 google 应用引擎日志中的错误消息。

Google App 引擎日志 "The specified framework 'Microsoft.AspNetCore.App', version '2.1.1' was not found."

Google App Engine Logs "The specified framework 'Microsoft.AspNetCore.App', version '2.1.1' was not found."

docker

google-app-engine

asp.net-core-3.1