英文:
A .NET API service shows (code=exited, status=203/EXEC) when Deploying to an Ubuntu Server
问题
我想部署一个使用.NET 5创建的WebAPI到Hetzner服务器，我已经根据这个网站的步骤部署了它部署.NET。一切都运行正常，直到我运行服务并检查其状态时，它显示了一个关于我的 WebApi.dll 的错误。
root@ubuntu:/# systemctl status MinAPIservice.service
● MinAPIservice.service - ASP .NET Web Application
Loaded: loaded (/etc/systemd/system/MinAPIservice.service; enabled; preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Tue 2023-06-13 09:58:40 UTC; 1s ago
Process: 52726 ExecStart=/usr/bin/dotnet /var/www/MinAPI/MinWebApi.dll (code=exited, status=203/EXEC)
Main PID: 52726 (code=exited, status=203/EXEC)
CPU: 775us
为了找到问题，我运行了以下命令 /etc/systemd/system# /usr/bin/dotnet /var/www/MinAPI/WebApi.dll 在系统目录中，并显示了以下错误：
root@ubuntu:/etc/systemd/system# /usr/bin/dotnet /var/www/MinAPI/WebApi.dll
You must install or update .NET to run this application.
App: /var/www/MinAPI/WebApi.dll
Architecture: x64
Framework: 'Microsoft.AspNetCore.App', version '5.0.0' (x64)
.NET location: /usr/lib/dotnet/
The following frameworks were found:
6.0.16 at [/root/.dotnet/shared/Microsoft.AspNetCore.App]
7.0.5 at [/root/.dotnet/shared/Microsoft.AspNetCore.App]
Learn about framework resolution:
https://aka.ms/dotnet/app-launch-failed
To install missing framework, download:
https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=5.0.0&arch=x64&rid=ubuntu.23.04-x64
现在我的服务器显示503 - 服务不可用...
我尝试安装.NET 5.0，但不再支持Ubuntu 23.04，还尝试安装.NET 6.0，问题仍然存在，我想找到解决这个错误的方法来使用Swagger运行我的API。
英文:
I want to deploy a WebAPI create with .NET 5 to a Hetzner server, I have deployed it based on the steps of this website Deploy .NET.
Everything works fine, until I run the Service and check its status, it shows an error with my WebApi.dll
root@ubuntu:/# systemctl status MinAPIservice.service
● MinAPIservice.service - ASP .NET Web Application
Loaded: loaded (/etc/systemd/system/MinAPIservice.service; enabled; preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Tue 2023-06-13 09:58:40 UTC; 1s ago
Process: 52726 ExecStart=/usr/bin/dotnet /var/www/MinAPI/MinWebApi.dll (code=exited, status=203/EXEC)
Main PID: 52726 (code=exited, status=203/EXEC)
CPU: 775us
And to find the problem I have run the following command
/etc/systemd/system# /usr/bin/dotnet /var/www/MinAPI/WebApi.dll in the system directory, and shows the following error:
root@ubuntu:/etc/systemd/system# /usr/bin/dotnet /var/www/MinAPI/WebApi.dll
You must install or update .NET to run this application.
App: /var/www/MinAPI/WebApi.dll
Architecture: x64
Framework: 'Microsoft.AspNetCore.App', version '5.0.0' (x64)
.NET location: /usr/lib/dotnet/
The following frameworks were found:
6.0.16 at [/root/.dotnet/shared/Microsoft.AspNetCore.App]
7.0.5 at [/root/.dotnet/shared/Microsoft.AspNetCore.App]
Learn about framework resolution:
https://aka.ms/dotnet/app-launch-failed
To install missing framework, download:
https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=5.0.0&arch=x64&rid=ubuntu.23.04-x64
Now my Server shows 503 - Service Unavailable ...
I have tried to Install .NET 5.0 , but it's no longer supported for Ubuntu 23.04, also tried to install .NET 6.0 still the same, I want to find a solution to this error to run my API using Swagger.
答案1
得分: 0
错误提示说您没有安装.NET 5框架，但您安装了更高版本，因此您可以在更高版本上运行它，但必须配置向前滚动行为以供应用程序使用。
请注意，使用此选项让应用程序在不同于其设计的框架版本上运行，可能会导致由于框架版本之间的更改而导致意外行为。
或者，您可以将API的框架版本升级到最新的.NET 7。
英文:
Error says you don't have .NET 5 framework installed, but you have higher versions so you can run it on a higher version, but you must configure roll-forward behavior for the application.
Note that since using this option lets the application run on a different framework version than the one for which it was designed, it may result in unintended behavior due to changes between versions of a framework.
Or you could upgrade the framework version of your API to the latest .NET 7.
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