I am trying to deploy a .NET Core 6.0 project to Digital Ocean using Apps Platform. But time and time again I am getting this exception:
Unhandled exception. System.InvalidOperationException: Unable to configure HTTPS endpoint. No server certificate was specified, and the default developer certificate could not be found or is out of date.
I’ve tried a lot of things and variations so far. Other resolutions to this exception suggest to run these commands on local machine:
dotnet dev-certs https --clean
dotnet dev-certs https --trust
But as this is deployment to app platform, I think that these won’t work. I’ve even tried sneaking in dotnet dev-certs https
command in Dockerfile but the same exception occurs.
Here’s what I’ve built so far:
FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
WORKDIR /app
FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
WORKDIR /src
COPY ["/Reservations.Api/Reservations.Api.csproj", "Reservations.Api/"]
COPY ["/Reservations.Application/Reservations.Application.csproj", "Reservations.Application/"]
COPY ["/Reservations.Persistance/Reservations.Persistance.csproj", "Reservations.Persistance/"]
COPY ["/Reservations.Security/Reservations.Security.csproj", "Reservations.Security/"]
COPY ["/Reservations.Domain/Reservations.Domain.csproj", "Reservations.Domain/"]
COPY ["/Reservations.UnitTests/Reservations.UnitTests.csproj", "Reservations.UnitTests/"]
RUN dotnet restore "Reservations.Api/Reservations.Api.csproj"
COPY . .
RUN dotnet build "Reservations.Api/Reservations.Api.csproj" -c Release -o /src/build
RUN dotnet dev-certs https
FROM build AS publish
RUN dotnet publish "Reservations.Api/Reservations.Api.csproj" -c Release -o /src/publish
FROM base AS final
WORKDIR /src
COPY --from=publish /src/publish .
EXPOSE 80
EXPOSE 443
ENV ASPNETCORE_URLS="https://+:80;https://+:443;"
ENTRYPOINT ["dotnet", "Reservations.Api.dll"]
{
"$schema": "https://json.schemastore.org/launchsettings.json",
"iisSettings": {
"windowsAuthentication": false,
"anonymousAuthentication": true,
"iisExpress": {
"applicationUrl": "http://localhost:44641",
"sslPort": 44366
}
},
"profiles": {
"Reservations.Api": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": true,
"launchUrl": "swagger",
"applicationUrl": "https://localhost:7202;http://localhost:5202",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"IIS Express": {
"commandName": "IISExpress",
"launchBrowser": true,
"launchUrl": "swagger",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"Docker": {
"commandName": "Docker",
"launchBrowser": true,
"launchUrl": "{Scheme}://{ServiceHost}:{ServicePort}/swagger",
"publishAllPorts": true,
"useSSL": false,
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development",
"ASPNETCORE_URLS": "https://+:80;"
},
"httpPort": 8080,
"applicationUrl": "http://+:8080;"
}
}
}
In Program.cs app.UseHttpsRedirection();
is included.
Deployment logs error:
[2023-03-01 15:39:53] warn: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[35]
[2023-03-01 15:39:53] No XML encryptor configured. Key {8cbcf317-aff6-4a80-90fa-539eeaf0de94} may be persisted to storage in unencrypted form.
[2023-03-01 15:39:53] Unhandled exception. System.InvalidOperationException: Unable to configure HTTPS endpoint. No server certificate was specified, and the default developer certificate could not be found or is out of date.
[2023-03-01 15:39:53] To generate a developer certificate run 'dotnet dev-certs https'. To trust the certificate (Windows and macOS only) run 'dotnet dev-certs https --trust'.
[2023-03-01 15:39:53] For more information on configuring HTTPS see https://go.microsoft.com/fwlin
I am out of ideas, so any help would be appreciated.
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Hi there,
It seems like the .NET application is looking for an HTTPS certificate but isn’t able to find one. Since you’re deploying this in a Docker container, and on a DigitalOcean App Platform that manages the HTTPS termination itself, there shoudn’t a need to handle HTTPS within your container at all.
What you could do is to disable the HTTPS configuration from the application itself and let the App Platform handle the SSL termination:
Remove HTTPS Configuration from the Application: Since the DigitalOcean platform should handle HTTPS for you, you might not need to configure HTTPS within the application itself. Update the
ASPNETCORE_URLS
environment variable to only include the HTTP URL, and remove the HTTPS redirection middleware (app.UseHttpsRedirection();
) from your application startup.Update the
Dockerfile
to have:Remove Unnecessary Certificate Commands: Since you’re not handling HTTPS in your application, you can remove the
RUN dotnet dev-certs https
line from yourDockerfile
, as it’s not needed.Update the
launchsettings.json
: Make sure that the launch settings are consistent with the environment variables and expose the right URLs. If you are not using HTTPS within the container, ensure that all configurations reflect that.Hope that this helps!
Best,
Bobby