如何使用 C# 工作人员服务将正确的配置数据推送到 swarm/kubernetes？

Question

I have 3 configs in service:

1 - appsettings.development.json
2 - appsettings.testing.json
3 - appsettings.production.json

And i have 3 launch settings for them as well in launchsettings.json :

{
    "profiles": {
        "DevelopmentDockerProfile" {
            "commandName": "Docker",
            "environmentVariables": {
                "DOTNET_ENVIRONMENT": "development"
            }
        },
        "ProductionDockerProfile" {
            "commandName": "Docker",
            "environmentVariables": {
                "DOTNET_ENVIRONMENT": "production"
            }
        },
        "TestingDockerProfile" {
            "commandName": "Docker",
            "environmentVariables": {
                "DOTNET_ENVIRONMENT": "testing"
            }
        }
    }
}

And i can normally run service, using correct configuration only on local machine.

I can not push DOTNET_ENVIRONMENT variable with service when publishing.

Is there any way to bind environment variable to publishProfile.pubxml or whatever else, that environment variable DOTNET_ENVIRONMENT will magically appear in docker service on host machine?

Answer 1

Short answer

No, there is no such option.

Longer one

First of all, you can easily set environment variables using Environment.SetEnvironmentVariable("name", "value") . But that's probably not what you want.

What you might want is to configure environment variables in configs for container/orchestration tool you use, either set in docker command line ( docker run -e VARIABLE_NAME=value ) or in docker-compose.yml for Docker Compose or in service YAML config for k8s.