Adventures of a Cloud Operator: Highly Available App Service 1.4 on Azure Stack - Step 2: Deployment

You’re a cloud operator for an Azure Stack Integrated system and for whatever reason you have the task of deploying the App Services Resource provider…

In this blog series, I’m going to take you through the considerations and deployment process of the App Services resource provider on an Azure Stack Integrated System. This should work on an ASDK but you’re probably going to make life tough for your single server instance.

Other posts in this series:
Highly Available App Service 1.4 on Azure Stack – Step 1: Design and planning
Highly Available App Service 1.4 on Azure Stack – Step 2: Deployment (this post)
Highly Available App Service 1.4 on Azure Stack – Step 3: Post-deployment setup (in process)
Highly Available App Service 1.4 on Azure Stack – Step 4: Updating App Service (in process)

Before we get into the nitty-gritty of it all, you should go an validate some marketplace items and if you don’t have them available you should kick off some marketplace downloads now…

Windows Server 2016 Datacenter Core Image
SQL Server 2016 SP2 on Windows Server 2016
Latest SQL IaaS Extension 1.2.x (currently 1.2.30)
Latest PowerShell Desired State Configuration Extension (currently 2.76.0)

Done? Welcome back 🙂

If you’re the studious type, then you’re probably going to get by with just the Microsoft documentation on this process, as these days it is fantastic and continually getting better. The last thing I want to do is reinvent the wheel and fill the internet up with another duplicated blog, but for those who want the perspective of a Cloud Operator who has deployed and is managing a production Azure Stack Integrated System perspective, then this blog is for you…

Firstly there are some assumptions made prior to embarking on this journey. It is assumed that:

You know what Azure Stack is…
You’re the Cloud Operator for an Azure Stack Integrated System
You have a fundamental understanding of what App Services is
Appropriate certificates have been sourced

Environment summary:

This blog series is based on an 4-node Azure Stack Integrated System that is Connected to Azure with Azure Active Directory as the Identity provider.

Deployment Steps:

Setup deployment environment
Create Azure AD application
Deploy HA File & SQL environment
Run the App Service 1.4 installer

Ok, let’s get started 🙂

1. Setup deployment environment

Cloud Operator VM
Prior to doing anything, we need to setup our deployment environment. I recommend this to be your Cloud Operator VM. You have a one of these right: 😉

On my Cloud Operator VMI create a working folder for all resource providers and a subfolder for each RP: i.e. C:\AzureStack-RPs\AppService. I will refer to this as the working folder.

Installer sources
First step is to have a read of this doc. It covers many of the considerations you need to make prior to pressing the deploy button:

App Service: Before you get started
https://docs.microsoft.com/en-us/azure/azure-stack/azure-stack-app-service-before-you-get-started

Essentially download (links in the above docs page) to your working folder:
App Service on Azure Stack deployment helper scripts
App Service on Azure Stack installer

Root certificate
Export the Azure Resource Manager root certificate for Azure Stack and save to the working folder.

PaaS certificates
Save your PaaS certificates to the working folder. If you don’t have these yet, stop what you’re doing and go read this blog post. I created a certs folder in the working folder and saved them all there.

2. Create an Azure Active Directory application

https://docs.microsoft.com/en-us/azure/azure-stack/azure-stack-app-service-before-you-get-started#create-an-azure-active-directory-application

Use the script in the App Service helper files

cd C:\AzureStack-RPs\AppService\AppServiceHelperScripts

$DirectoryTenantName = 'tenantname.onmicrosoft.com'
$AdminArmEndpoint = 'adminmanagement.region.domain.com' 
$TenantArmEndpoint = 'management.region.domain.com' 
$CertificateFilePath = "C:\AzureStack-RPs\AppService\certs\sso.appservice.region.domain.com.pfx" 
$CertificatePassword = '$mascerts123' | ConvertTo-SecureString -AsPlainText -Force

.\Create-AADIdentityApp.ps1 `
    -DirectoryTenantName $DirectoryTenantName `
    -AdminArmEndpoint $AdminArmEndpoint `
    -TenantArmEndpoint $TenantArmEndpoint `
    -CertificateFilePath $CertificateFilePath `
    -CertificatePassword $CertificatePassword

All things being equal you should see something like the below when started

You’ll get prompted to authenticate to the directory tenant. Provide the details of a user with access to create Applications in the directory.

Copy the App ID info down, you’ll need it later

Now we need to grant the application permissions for the App Service application to the accounts in Active Directory.

In the portal, find the newly created application.

I filtered by the App ID.

Click Settings

Select Required permissions and select Azure Stack

Select Grant permissons and Yes

Done 🙂

Great. You’re now ready to move on to the App Services installation process

3. Deploy HA File & SQL environment

The template: https://github.com/Azure/AzureStack-QuickStart-Templates/tree/master/appservice-fileserver-sqlserver-ha

Create a resource > Template deployment

Select > Edit Template

On the github page for the template click the link to azuredeploy.json and view the raw text

Select all > copy

Paste in the template replacing all existing text and click save

Select Edit Parameters and modify to what suits you. Make sure you record down all changes including the passwords!

Create the resources in the default provider subscription and I suggest creating a dedicated resource group

Hit create and go find something else to do for an hour or so.

The template took about 1 hour and 12 minutes to deploy

Check and save your outputs.

First thing to do is create a group policy to disable automatic windows updates (I created a VM in the network that has all the pertinent management features).

If you don’t you’ll likely go to your portal one day in the next week or so and find errors in portal and find the app services components missing

4. Run the App Service 1.4 installer

Install App Services 1.4

Below is an abridged version of the install steps as we’ll skip the steps where we don’t need to make any modification

Next, Accept the Microsoft licence agreement

Next, Accept the 3rd party licence agreement

Enter your ARM endpoint URL. It should auto-populate the Tenant ARM and the Tenant Name

Next, click the Connect button and select the Default Provider Subscription and the Region

Because we deployed the HA template, choose use existing Virtual Network and Subnets and select the corresponding vnets and subnets as shown below

Enter the details provided by the Output from the ARM template deployment… You saved this right??? 😉

You will see the below error as the installer cannot verify access to the share.

Enter the app ID details noted earlier.

Enter the SSO cert details and the path for the ARM root certificate exported in the earlier steps

Same for the Domain, API and Publisher certs.

I suggest copy and paste the password as I have clumsy fingers 🙂 It will error if the PFX password is wrong, but still good practice to use clipboard

Enter the details of the SQL instance recorded earlier

Expect a similar error as the file share due to the installer being unable to validate the SQL details

Based on the your sizing requirements, select the VM sizing that suits your deployment. These can be changed later so if unsure use the values provided below. These are the recommendations provided on the documentation.

I recommend at least a minimum of 2 instances for each role.