.Net Core docker容器无法连接到MySQL docker容器_Mysql_Docker_Asp.net Core_.net Core

.Net Core docker容器无法连接到MySQL docker容器

mysql docker asp.net-core .net-core

.Net Core docker容器无法连接到MySQL docker容器,mysql,docker,asp.net-core,.net-core,Mysql,Docker,Asp.net Core,.net Core,我有一个mysql数据库托管在docker容器上。我能够在我的Windows10机器上使用dbeaver客户端应用程序连接到mysql数据库（托管在docker容器上）。但是，我无法从部署在另一个docker容器上的.Net核心应用程序连接到它。我得到一个无法连接到任何指定的MySQL主机。错误我会错过什么 Appsettings.json: "ConnectionStrings": { "InstaTranscribeDBConnection&quo

我有一个mysql数据库托管在docker容器上。我能够在我的Windows10机器上使用dbeaver客户端应用程序连接到mysql数据库（托管在docker容器上）。但是，我无法从部署在另一个docker容器上的.Net核心应用程序连接到它。我得到一个

无法连接到任何指定的MySQL主机。

错误

我会错过什么

Appsettings.json:

  "ConnectionStrings": {
    "InstaTranscribeDBConnection": "server=localhost;port=3306;database=wordpress;user=root;password=SomePassword;"
  },

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
WORKDIR /app
EXPOSE 80
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
WORKDIR /src
COPY ["server/InstaTranscribe.Server.csproj", "server/"]
COPY ["client/InstaTranscribe.Client.csproj", "client/"]
RUN dotnet restore "server/InstaTranscribe.Server.csproj"
COPY . .
WORKDIR "/src/server"
RUN dotnet build "InstaTranscribe.Server.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "InstaTranscribe.Server.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "InstaTranscribe.Server.dll"]
RUN chmod +x ./entrypoint.sh
CMD /bin/bash ./entrypoint.sh

#!/bin/bash

set -e
run_cmd="dotnet run --server.urls http://*:80"    
until dotnet ef database update; do
>&2 echo "SQL Server is starting up"
sleep 1
done    
>&2 echo "SQL Server is up - executing command"
exec $run_cmd

Unhandled exception. System.InvalidOperationException: An exception has been raised that is likely due to a transient failure. Consider enabling transient error resiliency by adding 'EnableRetryOnFailure()' to the 'UseMySql' call.
 ---> MySql.Data.MySqlClient.MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts.
   at MySqlConnector.Core.ServerSession.ConnectAsync(ConnectionSettings cs, Int32 startTickCount, ILoadBalancer loadBalancer, IOBehavior ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/Core/ServerSession.cs:line 474
   at MySql.Data.MySqlClient.MySqlConnection.CreateSessionAsync(ConnectionPool pool, Int32 startTickCount, Nullable`1 ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 741
   at MySql.Data.MySqlClient.MySqlConnection.OpenAsync(Nullable`1 ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 396
   at MySql.Data.MySqlClient.MySqlConnection.Open() in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 362
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection(Boolean errorsExpected)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlRelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.<>c__DisplayClass18_0.<Exists>b__0(DateTime giveUp)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.<>c__DisplayClass12_0`2.<Execute>b__0(DbContext c, TState s)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)

Dockerfile:

  "ConnectionStrings": {
    "InstaTranscribeDBConnection": "server=localhost;port=3306;database=wordpress;user=root;password=SomePassword;"
  },

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
WORKDIR /app
EXPOSE 80
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
WORKDIR /src
COPY ["server/InstaTranscribe.Server.csproj", "server/"]
COPY ["client/InstaTranscribe.Client.csproj", "client/"]
RUN dotnet restore "server/InstaTranscribe.Server.csproj"
COPY . .
WORKDIR "/src/server"
RUN dotnet build "InstaTranscribe.Server.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "InstaTranscribe.Server.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "InstaTranscribe.Server.dll"]
RUN chmod +x ./entrypoint.sh
CMD /bin/bash ./entrypoint.sh

#!/bin/bash

set -e
run_cmd="dotnet run --server.urls http://*:80"    
until dotnet ef database update; do
>&2 echo "SQL Server is starting up"
sleep 1
done    
>&2 echo "SQL Server is up - executing command"
exec $run_cmd

Unhandled exception. System.InvalidOperationException: An exception has been raised that is likely due to a transient failure. Consider enabling transient error resiliency by adding 'EnableRetryOnFailure()' to the 'UseMySql' call.
 ---> MySql.Data.MySqlClient.MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts.
   at MySqlConnector.Core.ServerSession.ConnectAsync(ConnectionSettings cs, Int32 startTickCount, ILoadBalancer loadBalancer, IOBehavior ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/Core/ServerSession.cs:line 474
   at MySql.Data.MySqlClient.MySqlConnection.CreateSessionAsync(ConnectionPool pool, Int32 startTickCount, Nullable`1 ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 741
   at MySql.Data.MySqlClient.MySqlConnection.OpenAsync(Nullable`1 ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 396
   at MySql.Data.MySqlClient.MySqlConnection.Open() in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 362
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection(Boolean errorsExpected)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlRelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.<>c__DisplayClass18_0.<Exists>b__0(DateTime giveUp)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.<>c__DisplayClass12_0`2.<Execute>b__0(DbContext c, TState s)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)

entrypoint.sh:

  "ConnectionStrings": {
    "InstaTranscribeDBConnection": "server=localhost;port=3306;database=wordpress;user=root;password=SomePassword;"
  },

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
WORKDIR /app
EXPOSE 80
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
WORKDIR /src
COPY ["server/InstaTranscribe.Server.csproj", "server/"]
COPY ["client/InstaTranscribe.Client.csproj", "client/"]
RUN dotnet restore "server/InstaTranscribe.Server.csproj"
COPY . .
WORKDIR "/src/server"
RUN dotnet build "InstaTranscribe.Server.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "InstaTranscribe.Server.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "InstaTranscribe.Server.dll"]
RUN chmod +x ./entrypoint.sh
CMD /bin/bash ./entrypoint.sh

#!/bin/bash

set -e
run_cmd="dotnet run --server.urls http://*:80"    
until dotnet ef database update; do
>&2 echo "SQL Server is starting up"
sleep 1
done    
>&2 echo "SQL Server is up - executing command"
exec $run_cmd

Unhandled exception. System.InvalidOperationException: An exception has been raised that is likely due to a transient failure. Consider enabling transient error resiliency by adding 'EnableRetryOnFailure()' to the 'UseMySql' call.
 ---> MySql.Data.MySqlClient.MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts.
   at MySqlConnector.Core.ServerSession.ConnectAsync(ConnectionSettings cs, Int32 startTickCount, ILoadBalancer loadBalancer, IOBehavior ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/Core/ServerSession.cs:line 474
   at MySql.Data.MySqlClient.MySqlConnection.CreateSessionAsync(ConnectionPool pool, Int32 startTickCount, Nullable`1 ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 741
   at MySql.Data.MySqlClient.MySqlConnection.OpenAsync(Nullable`1 ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 396
   at MySql.Data.MySqlClient.MySqlConnection.Open() in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 362
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection(Boolean errorsExpected)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlRelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.<>c__DisplayClass18_0.<Exists>b__0(DateTime giveUp)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.<>c__DisplayClass12_0`2.<Execute>b__0(DbContext c, TState s)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)

StackTrace:

  "ConnectionStrings": {
    "InstaTranscribeDBConnection": "server=localhost;port=3306;database=wordpress;user=root;password=SomePassword;"
  },

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
WORKDIR /app
EXPOSE 80
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
WORKDIR /src
COPY ["server/InstaTranscribe.Server.csproj", "server/"]
COPY ["client/InstaTranscribe.Client.csproj", "client/"]
RUN dotnet restore "server/InstaTranscribe.Server.csproj"
COPY . .
WORKDIR "/src/server"
RUN dotnet build "InstaTranscribe.Server.csproj" -c Release -o /app/build
FROM build AS publish
RUN dotnet publish "InstaTranscribe.Server.csproj" -c Release -o /app/publish
FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "InstaTranscribe.Server.dll"]
RUN chmod +x ./entrypoint.sh
CMD /bin/bash ./entrypoint.sh

#!/bin/bash

set -e
run_cmd="dotnet run --server.urls http://*:80"    
until dotnet ef database update; do
>&2 echo "SQL Server is starting up"
sleep 1
done    
>&2 echo "SQL Server is up - executing command"
exec $run_cmd

Unhandled exception. System.InvalidOperationException: An exception has been raised that is likely due to a transient failure. Consider enabling transient error resiliency by adding 'EnableRetryOnFailure()' to the 'UseMySql' call.
 ---> MySql.Data.MySqlClient.MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts.
   at MySqlConnector.Core.ServerSession.ConnectAsync(ConnectionSettings cs, Int32 startTickCount, ILoadBalancer loadBalancer, IOBehavior ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/Core/ServerSession.cs:line 474
   at MySql.Data.MySqlClient.MySqlConnection.CreateSessionAsync(ConnectionPool pool, Int32 startTickCount, Nullable`1 ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 741
   at MySql.Data.MySqlClient.MySqlConnection.OpenAsync(Nullable`1 ioBehavior, CancellationToken cancellationToken) in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 396
   at MySql.Data.MySqlClient.MySqlConnection.Open() in /_/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs:line 362
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection(Boolean errorsExpected)
   at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlRelationalConnection.Open(Boolean errorsExpected)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.<>c__DisplayClass18_0.<Exists>b__0(DateTime giveUp)
   at Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.<>c__DisplayClass12_0`2.<Execute>b__0(DbContext c, TState s)
   at Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)

未处理的异常。System.InvalidOperationException：引发了一个异常，该异常可能是由于瞬时故障引起的。考虑通过将“EnabReReTyNoRebug（）”添加到“UsMySQL”调用来启用瞬态错误恢复。
--->MySql.Data.MySqlClient.MySqlException（0x80004005）：无法连接到任何指定的MySql主机。
在MySqlConnector.Core.ServerSession.ConnectAsync（ConnectionSettings cs、Int32 startTickCount、iloaddbalancer-loadBalancer、IOBehavior-IOBehavior、CancellationToken-CancellationToken-CancellationToken）的/\usrc/MySqlConnector/Core/ServerSession.cs:第474行
在/u/src/MySqlConnector/MySql.Data.MySqlConnection.CreateSessionAsync（ConnectionPool，Int32 startTickCount，Nullable`1 ioBehavior，CancellationToken CancellationToken）中/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs：第741行
在/\uu/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs中的MySql.Data.MySqlClient.MySqlConnection.OpenAsync（null`1 ioBehavior，CancellationToken CancellationToken）处：第396行
在/\uu/src/MySqlConnector/MySql.Data.MySqlClient/MySqlConnection.cs中的MySql.Data.MySqlClient.MySqlConnection.Open（）处：第362行
位于Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection（布尔错误预期）
位于Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open（布尔错误预期）
位于Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlRelationalConnection.Open（布尔错误预期）
在Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlDatabaseCreator.c__DisplayClass18_0.b__0（日期时间放弃）
在Microsoft.EntityFrameworkCore.ExecutionStrategyExtensions.c__显示Class12_0`2.b_0（DbContext c，TState s）
在Pomelo.EntityFrameworkCore.MySql.Storage.Internal.MySqlExecutionStrategy.Execute[TState，TResult]（TState状态，Func`3操作，Func`3验证成功）

您将需要运行多个docker实例

.NET核心

MySQL

他们需要成为同一网络的一部分

如果您使用的是docker compose文件，那么在两个docker容器之间提供专用网络就更容易了

示例如下所示：

version: '3'
services:
  moviedb:
    image: mysql
    command: --default-authentication-plugin=mysql_native_password
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: masteringdocker
      MYSQL_DATABASE: MvcMovieContext
      MYSQL_USER: moviedbadmin
      MYSQL_PASSWORD: masteringdocker
    volumes:
      - ./MvcMovie/init.sql:/docker-entrypoint-initdb.d/init.sql:ro
  web:
    build: .
    restart: always
    ports:
      - "8000:80"
    depends_on:
      - moviedb
      - cache

上述操作将创建一个默认网络，并将两个容器放在其上。但如果你想更好地控制网络，你可以在下面添加一节

networks:
  public_net:
    driver: bridge
    ipam:
      driver: default
      config:
        - subnet: ${NETWORK_SUBNET}

并使用以下部分更新每个服务

moviedb

和

web

，以使用此网络：

networks:
  public_net:
     ipv4_address: ${HA_PROXY_IP}

HA_PROXY_IP位于.env文件中

HA_PROXY_IP=192.168.0.99

这应该让你开始。您必须处理多个文件夹的复杂性和

将您的

docker compose.yml

和

Dockerfile

放在正确的位置，以使所有内容都能顺利运行。