Question

我使用Visual Studio创建了.NET核心WebAPI项目。添加了Docker支持（稍后在digitalocean上托管它），但我遇到了一个问题。当我运行docker-compose时 - 一切正常，但是当我尝试在mongoDB集合中搜索时会出现下一个错误：

A timeout occured after 30000ms selecting a server using CompositeServerSelector{ Selectors = MongoDB.Driver.MongoClient+AreSessionsSupportedServerSelector, LatencyLimitingServerSelector{ AllowedLatencyRange = 00:00:00.0150000 } }. Client view of cluster state is { ClusterId : "1", ConnectionMode : "Automatic", Type : "Unknown", State : "Disconnected", Servers : [{ ServerId: "{ ClusterId : 1, EndPoint : "127.0.0.1:27017" }", EndPoint: "127.0.0.1:27017", State: "Disconnected", Type: "Unknown", HeartbeatException: "MongoDB.Driver.MongoConnectionException: An exception occurred while opening a connection to the server. ---> System.Net.Internals.SocketExceptionFactory+ExtendedSocketException: Connection refused 127.0.0.1:27017
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at MongoDB.Driver.Core.Connections.TcpStreamFactory.<ConnectAsync>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at MongoDB.Driver.Core.Connections.TcpStreamFactory.<CreateStreamAsync>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__48.MoveNext()
   --- End of inner exception stack trace ---
   at MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__48.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at MongoDB.Driver.Core.Servers.ServerMonitor.<HeartbeatAsync>d__27.MoveNext()" }] }.'

似乎docker容器无法连接到它之外的任何东西，但我是docker的新手，几天的谷歌搜索没有产生任何结果。

MongoDB与WebAPI位于同一台计算机上。如果需要Dockerfile或docker-compose数据，我将提供它。

请帮助我理解我错过了什么，以及如何正确配置docker项目以使用mongoDb并在发布到linux服务器后保持此工作。提前谢谢。

Dockerfile：

FROM microsoft/aspnetcore:2.0 AS base
WORKDIR /app
EXPOSE 80

FROM microsoft/aspnetcore-build:2.0 AS build
WORKDIR /src
COPY *.sln ./
COPY Temp_Server/Temp_Server.csproj Temp_Server/
RUN dotnet restore
COPY . .
WORKDIR /src/Temp_Server
RUN dotnet build -c Release -o /app

FROM build AS publish
RUN dotnet publish -c Release -o /app

FROM base AS final
WORKDIR /app
COPY --from=publish /app .
ENTRYPOINT ["dotnet", "Temp_Server.dll"]

搬运工-compose.ci.build.yml：

version: '3'

services:
  ci-build:
    image: microsoft/aspnetcore-build:1.0-2.0
    volumes:
      - .:/src
    working_dir: /src
    command: /bin/bash -c "dotnet restore ./Temp_Server.sln && dotnet publish ./Temp_Server.sln -c Release -o ./obj/Docker/publish"

搬运工-compose.yml：

version: '3'

services:
  temp_server:
    image: temp_server
    build:
      context: .
      dockerfile: temp_Server/Dockerfile

搬运工-compose.override.yml：

version: '3'

services:
  temp_server:
    environment:
      - ASPNETCORE_ENVIRONMENT=Development
    ports:
      - "80"

Answer 1

EndPoint : "127.0.0.1:27017"

从docker容器的角度来看，这意味着“在这个容器中”。

您应该将容器的27017端口发布到主机IP，然后配置您的Web容器以使用该套接字。重要的是你不能使用127.0.0.1作为IP，因为每个容器都有这个环回地址。请改用本地网络IP。您可以在此处阅读有关网络的更多信息：https://docs.docker.com/config/containers/container-networking/

或者您应该创建一个桥接网络并将容器连接到它，并使用自动服务发现按名称（如mymongo：27017）引用容器。 https://docs.docker.com/docker-cloud/apps/service-links/#discovering-containers-on-the-same-service-or-stack

Docker容器无法连接MongoDB

1 个答案: