Using azure servicebus with backup

Question

Pulumi · Accepted Answer

Azure Service Bus is a fully managed enterprise integration message broker. Service Bus can decouple applications and services. Service Bus offers a reliable and secure platform for asynchronous transfer of data and state. Data is transferred between different applications and services using messages.

To back up your Azure Service Bus, Azure provides a feature known as Disaster Recovery Configuration (alias: DisasterRecoveryConfig) which allows you to replicate the entities and messages of a namespace to a secondary namespace. In the event of a disaster where the primary namespace is not accessible, you can failover to the secondary namespace.

Below is a Pulumi program in TypeScript that demonstrates how to create an Azure Service Bus namespace and set up disaster recovery configuration for it. This helps in making sure that you have a backup of your Service Bus namespace with all the entities and messages replicated to a secondary namespace.

First, we will import the necessary modules from the `@pulumi/azure-native` package, and then we'll create two Service Bus namespaces – `primaryNamespace` and `secondaryNamespace`. The `DisasterRecoveryConfig` resource will set up the alias and link the secondary namespace as the recovery namespace for the primary.

The following program is meant to run in your local environment where Pulumi is already installed and configured for Azure.

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as azure_native from "@pulumi/azure-native";

// Create an Azure Resource Group
const resourceGroup = new azure_native.resources.ResourceGroup("myResourceGroup");

// Create a Primary Azure Service Bus Namespace
const primaryNamespace = new azure_native.servicebus.Namespace("primaryNamespace", {
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    sku: {
        name: "Standard",
    },
});

// Create a Secondary Azure Service Bus Namespace for Disaster Recovery
const secondaryNamespace = new azure_native.servicebus.Namespace("secondaryNamespace", {
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    sku: {
        name: "Standard",
    },
});

// Set up Disaster Recovery Configuration
const disasterRecoveryConfig = new azure_native.servicebus.DisasterRecoveryConfig("disasterRecoveryConfig", {
    resourceGroupName: resourceGroup.name,
    namespaceName: primaryNamespace.name,
    partnerNamespace: secondaryNamespace.id, // Link the secondary namespace
});

// Export the namespace names and the alias of the disaster recovery config
export const primaryNamespaceName = primaryNamespace.name;
export const secondaryNamespaceName = secondaryNamespace.name;
export const disasterRecoveryConfigAlias = disasterRecoveryConfig.name;
```

In this program:

- We start by creating a new Azure Resource Group using `azure_native.resources.ResourceGroup`. It logically groups related resources together.
- We create two instances of `azure_native.servicebus.Namespace` representing both the primary and secondary namespaces for our Service Bus environment.
- We specify the SKU to use for the Service Bus, using the "Standard" tier.
- The `azure_native.servicebus.DisasterRecoveryConfig` resource is created to set up the replication between the primary and secondary namespaces. This sets up an alias that you can use to failover in case of a disaster.
- Finally, we export the names of the primary and secondary namespaces, as well as the alias for the disaster recovery configuration. This information can be used for managing these resources or referencing them in other parts of your infrastructure as code.

To manage failover and other operations, you would interact with these exported values or use the Azure portal, CLI, or PowerShell in case of an actual disaster or for testing purposes.

This quick example provided you with a basic disaster recovery setup for Azure Service Bus using Pulumi. Please remember that the Disaster Recovery feature in the "Premium" tier offers enhanced capabilities, like active geo-redundancy. Depending on your requirements, you might want to consider different configurations and SKU options.