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06 Deploy to Azure.md

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06 Deploy to Azure.md

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Deploying to Azure

Set up the Azure access

First create an Azure account, you can get free tier services, free trials and free credit (for example when signing up, and through Visual Studio Dev Essentials).

Install the Azure CLI, either via the installer or Chocolatey (from and Administrator PowerShell prompt):

choco install azure-cli

Then (after re-opening your command prompt) you should be able to use the Azure CLI

az login

which will open a browser window to login.

Create the Pulumi project to deploy to the cloud

From the command prompt in the repository

mkdir Deployment
cd Deployment

Optionally, if you're storing data in your (private) repo instead

mkdir .pulumi
pulumi login file://./.pulumi

And then create the project

pulumi new azure-fsharp --force

But the default project template doesn't use paket, so edit the fsproj

-  <ItemGroup>
-    <PackageReference Include="Pulumi.AzureNative" Version="0.*" />
-    <PackageReference Include="Pulumi.FSharp" Version="2.*" />
-  </ItemGroup>

and add the packages

dotnet paket add Pulumi.AzureNative --project Deployment
dotnet paket add Pulumi.FSharp --project Deployment

By the time the deployment was coded up, there wasn't much left of the templated code. It was built from:

By performing the command-line deployment explained in the Azure guide, you can find the correct settings for the Pulumi objects. For example:

az functionapp create --resource-group functions1234 --consumption-plan-location westeurope --runtime dotnet-isolated --runtime-version 5.0 --functions-version 3 --name wvazureclie --storage-account sa8c6d7

Then retrieve the settings from Pulumi code.

    let fn = WebApp.Get("wvazurecli", input "/subscriptions/...../resourceGroups/functions1234/providers/Microsoft.Web/sites/wvazureclie")
    let webAppKind           = fn.Kind
    let webAppConfigSettings = fn.SiteConfig |> Outputs.apply (fun c -> c.AppSettings |> Seq.map (fun o -> $"{o.Name}={o.Value}") |> String.concat ",")
    let webAppConfigNetVer   = fn.SiteConfig |> Outputs.apply (fun c -> c.NetFrameworkVersion)
    let serverFarmId         = fn.ServerFarmId

and return the values to be shown in the preview of pulumi up

    dict [
        "fn.Kind",                   webAppKind           :> obj
        "fn.SiteConfig.AppSettings", webAppConfigSettings :> obj
        "fn.SiteConfig.NetVer",      webAppConfigNetVer   :> obj
        "fn.ServerFarmId",           serverFarmId         :> obj
    ]

You can also diff the json produced by the Export tab of the Azure Web Portal for the az func-deployed and Pulumi-deployed versions to check that everything is there.

The finished deployment code

There are a couple of rough edges, particularly hardcoding part of the function URL for the stack output dictionary at the end. But opening the URL in the web browser shows the "Hello" message from the function running in 'the cloud'.