open Microsoft.Azure.Management.ResourceManager.Fluent
open Microsoft.Azure.Management.Fluent

let ClientId = "<Service Principal Application ID>"
let ServicePrincipalPassword = "<Service Principal Password>"
let AzureTenantId = "<tenant ID goes here>"
let AzureSubscriptionId = "<azure subscription ID goes here>"

let azureCredentials =
    let servicePrincipalLoginInformation = Authentication.ServicePrincipalLoginInformation()
    servicePrincipalLoginInformation.ClientId <- ClientId
    servicePrincipalLoginInformation.ClientSecret <- ServicePrincipalPassword
    Authentication.AzureCredentials(servicePrincipalLoginInformation, AzureTenantId, AzureEnvironment.AzureGlobalCloud)

let azure = Azure.Configure().Authenticate(azureCredentials).WithSubscription(AzureSubscriptionId)

let resourceGroups = azure.ResourceGroups.List() 

resourceGroups
|> Seq.iter (fun x -> printfn "%s" x.Name)