问题描述
我正在尝试在 docker 容器中运行 .Net 5 应用程序。此应用程序使用 SAP NetWeaver RFC SDK 连接到 SAP 系统。但是它报告错误
UUID daemon (uuidd) is not active
起初我尝试使用最初产生错误的微软提供的运行时映像 (mcr.microsoft.com/dotnet/runtime:5.0)。
初始 docker 文件
FROM mcr.microsoft.com/dotnet/runtime:5.0 AS base
WORKDIR /app
FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /src
# copy everything
Copy . .
WORKDIR "/src/SapClientService"
RUN dotnet restore
RUN dotnet build -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "SapClientService.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
ENV LD_DEBUG="all"
ENV LD_DEBUG_OUTPUT="/debug.txt"
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet","SapClientService.dll"]
然后我尝试通过自己安装运行时来修改运行时映像,以便我可以安装包等。
ARG DOTNET_VERSION=5.0.8
FROM amd64/ubuntu:focal as runtime-deps
RUN apt-get update \
&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
ca-certificates \
\
# .NET Core dependencies
libc6 \
libgcc1 \
libgssapi-krb5-2 \
libicu66 \
libssl1.1 \
libstdc++6 \
zlib1g \
uuid \ # <- I added this
&& rm -rf /var/lib/apt/lists/*
ENV \
# Configure web servers to bind to port 80 when present
ASPNETCORE_URLS=http://+:80 \
# Enable detection of running in a container
DOTNET_RUNNING_IN_CONTAINER=true
# Installer image
FROM amd64/buildpack-deps:focal-curl as runtime-installer
ARG DOTNET_VERSION
# Retrieve .NET
RUN curl -SL --output dotnet.tar.gz https://dotnetcli.azureedge.net/dotnet/Runtime/$DOTNET_VERSION/dotnet-runtime-$DOTNET_VERSION-linux-x64.tar.gz \
&& dotnet_sha512='8789609f3039dca1d0dc19562f23bc9bfe5d513a2d10639a8a779afe7656447b7ee953f9a8d9d0b07ba6ca4a346770c0efb5a34e5240b5d355d4d8198220e9b1' \
&& echo "$dotnet_sha512 dotnet.tar.gz" | sha512sum -c - \
&& mkdir -p /dotnet \
&& tar -ozxf dotnet.tar.gz -C /dotnet \
&& rm dotnet.tar.gz
# .NET runtime image
FROM runtime-deps as runtime
ARG DOTNET_VERSION
ENV DOTNET_VERSION=$DOTNET_VERSION
COPY --from=runtime-installer ["/dotnet","/usr/share/dotnet"]
RUN ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet
FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /src
# copy everything
Copy . .
WORKDIR "/src/SapClientService"
RUN dotnet restore
RUN dotnet build -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "SapClientService.csproj" -c Release -o /app/publish
我使用 ms-runtime-deps 和 ms-runtim dockerfile 的内容作为基础。
我尝试安装软件包 uuid
(有效),但 uuidd
仍然无法访问。
所以中心问题是我从哪里获得这个 uuidd
守护程序以及如何安装/设置/启动它。
解决方法
我想出了我们需要做什么。
我们需要安装软件包 uuid
和 uuid-runtime
。在我们开始 uuidd
之前,我们需要通过简单地执行 /run/uuidd
来创建文件夹 mkdir /run/uuidd
。
起初我虽然只需要包 uuid-runtime
和文件夹 /run/uuidd
,因为我可以毫无问题地启动守护进程。但是一旦 NetWeaver 代码想要 uuid
,运行时就会完全崩溃,我的意思是完全,它甚至不会输出任何错误。
所以我的 Dockerfile
现在看起来像这样
FROM mcr.microsoft.com/dotnet/runtime:5.0 AS base
RUN mkdir /run/uuidd
RUN apt-get update \
&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
# SAP NetWeaver RFC SDK dependencies
\
uuid \
uuid-runtime \
&& rm -rf /var/lib/apt/lists/*
WORKDIR /app
FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /src
# copy everything
Copy . .
WORKDIR "/src/SapClientService"
RUN dotnet restore
RUN dotnet build -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "SapClientService.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT [ "sh","-c","uuidd && exec dotnet SapClientService.dll" ]
并且运行良好。
最后一件事是不要
ENTRYPOINT [ "sh","uuidd && exec dotnet SapClientService.dll" ]
我们必须手动启动 uuidd
并且由于 docker 似乎只需要一个启动程序,我们只需使用 sh
启动 uuidd
然后我们的应用程序。但是,根据 docker-docs,exec
很重要。