How to WebDeploy an ASP.NET Core application in "Production" environment?

Question

I created a test ASP.NET Core web app and published it to azure via Web Deploy...

When I try to access a page controller via the site URL, I have the following:

I have mainly non-modified by default also a lauchSettings.json file with

{
    "iisSettings": {
        "windowsAuthentication": false,
        "anonymousAuthentication": true,
        "iisExpress": {
            "applicationUrl": "http://localhost:23403/",
            "sslPort": 0
        }
    },
    "profiles": {
        "IIS Express": {
            "commandName": "IISExpress",
            "launchBrowser": true,
            "environmentVariables": {
                "ASPNETCORE_ENVIRONMENT": "Development"
            }
        },
        "IIS Express (Staging)": {
            "commandName": "IISExpress",
            "launchBrowser": true,
            "environmentVariables": {
                "ASPNETCORE_ENVIRONMENT": "Staging"
            }
        },
        "IIS Express (Production)": {
            "commandName": "IISExpress",
            "launchBrowser": true,
            "environmentVariables": {
                "ASPNETCORE_ENVIRONMENT": "Production"
            }
        },
        "MyApplication": {
            "commandName": "Project",
            "launchBrowser": true,
            "environmentVariables": {
                "ASPNETCORE_ENVIRONMENT": "Development"
            },
            "applicationUrl": "http://localhost:23404"
        }
    }
}

What should I do in order to modify the ASPNETCORE_ENVIRONMENT variable when publishing it via

PS.

I updated the App Settings in Azure portal, like this then republished the application...

But nothing changed, I have the same Error...

Possible duplicate of how to set ASPNETCORE_ENVIRONMENT to be considered for publishing an asp.net core application? — rickvdbosch
– rickvdbosch, Commented Jul 13, 2017 at 13:40
launchsettings.json only affects local development I think. It won't affect it in Azure. I think you should be able to define an app setting with key ASPNETCORE_ENVIRONMENT set to e.g. Development. — juunas
– juunas, Commented Jul 13, 2017 at 13:41

juunas · Accepted Answer · 2017-07-13 13:44:51Z

2

launchsettings.json only affects local development I think. It won't affect it in Azure. I think you should be able to define an app setting with key ASPNETCORE_ENVIRONMENT set to e.g. Development.

answered Jul 13, 2017 at 13:44

juunas

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6 Comments

serge Over a year ago

I updated the App Settings in Azure portal, like in my edit of the OP, then republished the application... But nothing changed, I have the same Error...

juunas Over a year ago

Hmm, that's odd. I'll have to try this in a moment.

serge Over a year ago

I put that value in "Development" and now I have an error... Because it can't find my secrets in Azure :) Where by the way I should store that secrets?

serge Over a year ago

haha ! I put them in the Application Settings and that worked !

serge Over a year ago

however is strange that it works only in "Development" mode, probably because of if (env.IsDevelopment()) { builder = builder.AddUserSecrets<Startup>(); }

|

Viacheslav Shchupak · Accepted Answer · 2017-07-13 14:49:49Z

0

I thinks you are mixing 2 questions here.

Deployment to production
Monitoring bugs

As about deployment, it looks like you did everything correctly - your site is hosted using not Development environment. This is exactly what error page tells you.

As about bugs, you definitely would not like anyone to see your connection strings or anything else an error message may contain. So you need to add some logging to see what really fails.

answered Jul 13, 2017 at 14:49

Viacheslav Shchupak

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