docker - .Net Core与Docker的EC2教程问题

Question

我正在研究this教程，并尝试在EC2容器服务上安装一个简单的ASP.Net核心应用程序。我快要结束了，但是无法启动我的容器。当我输入:

docker run 171329494690.dkr.ecr.us-west-2.amazonaws.com/ecsdemo-redisgeo:latest

手动运行容器时，出现以下错误:

    Project RedisGeo.ServiceModel (.NETStandard,Version=v1.6) was previously compiled. Skipping compilation.
Project RedisGeo.ServiceInterface (.NETStandard,Version=v1.6) was previously compiled. Skipping compilation.
Project RedisGeo (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation.
fail: ServiceStack.Redis.RedisNativeClient[0]
      Could not connect to redis Instance at localhost:6379
fail: ServiceStack.Redis.RedisNativeClient[0]
      Could not connect to redis Instance at localhost:6379
fail: ServiceStack.Redis.RedisNativeClient[0]
      localhost:6379

Unhandled Exception: ServiceStack.Redis.RedisException: localhost:6379 ---> System.Net.Internals.SocketExceptionFactory+ExtendedSocketException: Connection refused 127.0.0.1:6379
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
   at System.Net.Sockets.Socket.Connect(IPAddress address, Int32 port)
   at ServiceStack.Redis.RedisNativeClient.Connect() in /opt/lib/teamcity-agent/work/8dcfdcec54d0f21a/src/ServiceStack.Redis/RedisNativeClient_Utils.cs:line 212
   at ServiceStack.Redis.RedisNativeClient.AssertConnectedSocket() in /opt/lib/teamcity-agent/work/8dcfdcec54d0f21a/src/ServiceStack.Redis/RedisNativeClient_Utils.cs:line 257
   --- End of inner exception stack trace ---
   at ServiceStack.Redis.RedisNativeClient.AssertConnectedSocket() in /opt/lib/teamcity-agent/work/8dcfdcec54d0f21a/src/ServiceStack.Redis/RedisNativeClient_Utils.cs:line 273
   at ServiceStack.Redis.RedisNativeClient.AssertServerVersionNumber() in /opt/lib/teamcity-agent/work/8dcfdcec54d0f21a/src/ServiceStack.Redis/RedisNativeClient_Utils.cs:line 47
   at ServiceStack.Redis.RedisClient.GetServerRole() in /opt/lib/teamcity-agent/work/8dcfdcec54d0f21a/src/ServiceStack.Redis/RedisClient.cs:line 1092
   at ServiceStack.Redis.RedisResolver.CreateRedisClient(RedisEndpoint config, Boolean master) in /opt/lib/teamcity-agent/work/8dcfdcec54d0f21a/src/ServiceStack.Redis/RedisResolver.cs:line 84
   at ServiceStack.Redis.RedisManagerPool.GetClient() in /opt/lib/teamcity-agent/work/8dcfdcec54d0f21a/src/ServiceStack.Redis/RedisManagerPool.cs:line 194
   at RedisGeo.AppHost.ImportCountry(IRedisClientsManager redisManager, String countryCode) in /app/RedisGeo/AppHost.cs:line 35
   at RedisGeo.AppHost.Configure(Container container) in /app/RedisGeo/AppHost.cs:line 30
   at ServiceStack.ServiceStackHost.Init() in /opt/lib/teamcity-agent/work/d09206570215629/src/ServiceStack/ServiceStackHost.cs:line 189
   at ServiceStack.NetCoreAppHostExtensions.UseServiceStack(IApplicationBuilder app, AppHostBase appHost) in /opt/lib/teamcity-agent/work/d09206570215629/src/ServiceStack/AppHostBase.NetCore.cs:line 178
   at RedisGeo.Startup.Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) in /app/RedisGeo/Startup.cs:line 27
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.Configure(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()
   at Microsoft.AspNetCore.Hosting.WebHostBuilder.Build()
   at RedisGeo.Program.Main(String[] args) in /app/RedisGeo/Program.cs:line 14

我们将不胜感激，因为我是AWS的新手，所以请告知我是否可以提供更多信息。

这是我的docker文件:

FROM microsoft/dotnet:1.1-sdk-projectjson
COPY src /app
WORKDIR /app
RUN ["dotnet", "restore"]
WORKDIR /app/RedisGeo
RUN ["dotnet", "build"]
EXPOSE 5000/tcp
ENV ASPNETCORE_URLS https://*:5000
ENTRYPOINT ["dotnet", "run", "--server.urls", "http://*:5000"]

当我运行以下命令 docker ps --format "{{.ID}}: {{.Status}} {{.Command}} {{.Ports}}"时，我得到以下当前正在运行的Docker容器的输出

8285b5479401: Up 22 hours "/agent"
ba110a5f14ef: Up 46 hours "/app/docker-entrypoi" 0.0.0.0:80->80/tcp, 443/tcp

ecsdemo-redisgeo任务容器定义

Answer 1

Connection refused 127.0.0.1:6379

此错误表明 127.0.0.1:6379上没有可用的Redis Server实例。

确保您的task-definition.json与 ECS task-definition.json相同，其中包括 ${IMAGE_NAME}-redis容器定义，该定义将告诉ECS也将Redis服务器Docker实例与您的App一起部署。您可以在 redis-geo/scripts上找到用于部署redis-geo App的脚本。

可从 REDIS_HOST Environment Variable访问redis服务器实例的主机名，如果存在，则应使用 use in your App进行访问，例如:

container.Register<IRedisClientsManager>(c =>
    new RedisManagerPool(AppSettings.Get("REDIS_HOST", defaultValue:"localhost")));