Configuring immediate backups for Azure File Shares on-demand

Question

Pulumi · Accepted Answer

Backing up Azure File Shares is an important task to protect your data from accidental loss or corruption. To configure immediate backups for Azure File Shares on-demand, Azure provides backup policies that allow you to define the backup frequency and retention rules. These backups ensure that your data is recoverable in case of any mishaps.

To achieve this, we will use the `azure.backup.PolicyFileShare` and `azure.backup.ProtectedFileShare` from the Pulumi Azure Provider. First, we define a backup policy using `PolicyFileShare` which explains when the backup will run and how long it will be retained. Then we create a `ProtectedFileShare`, which is a resource that associates an Azure File Share with the backup policy, ensuring that backups are taken according to the policy.

Here's the Pulumi TypeScript program that sets up on-demand backups for Azure File Shares:

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

// Replace these variables with appropriate values
const resourceGroupName = "your-resource-group";
const recoveryVaultName = "your-recovery-vault-name";
const storageAccountId = "your-storage-account-id";
const fileShareName = "your-file-share-name";

// Create an Azure Recovery Services Vault for backups
const recoveryVault = new azure.recoveryservices.Vault("recoveryVault", {
    resourceGroupName,
    location: "West US", // choose the appropriate location
    sku: "Standard",     // or "RS0" for premium features
});

// Create an Azure Backup Protection Policy for File Shares
const backupPolicy = new azure.backup.PolicyFileShare("backupPolicy", {
    resourceGroupName,
    recoveryVaultName: recoveryVault.name,
    timezone: "UTC",
    backup: {
        time: "23:59",  // Time at which the backup should run (in 24-hour format)
        frequency: "Day",  // Frequency of backup, can be 'Day' or 'Week'
        //...you can add additional backup intervals (hourly, weekly, etc.) as needed
    },
    retentionDaily: {  // How long the daily backups should be retained
        count: 30,  // Number of days to retain
    },
    //...you can add additional retention rules (weekly, monthly, yearly) as needed
});

// Protect an Azure File Share with the backup policy
const protectedFileShare = new azure.backup.ProtectedFileShare("protectedFileShare", {
    resourceGroupName,
    recoveryVaultName: recoveryVault.name,
    backupPolicyId: backupPolicy.id,
    sourceFileShareName: fileShareName,
    sourceStorageAccountId: storageAccountId,
});

// Export the ID of the protected file share
export const protectedFileShareId = protectedFileShare.id;
```

Here's how the above program works:

1. We first import the required modules (`@pulumi/pulumi` for the Pulumi programming model and `@pulumi/azure` for the Azure resource types).
2. We define a recovery services vault by creating a new instance of `azure.recoveryservices.Vault`. This vault is where all the backups will be stored.
3. We define a backup policy with `azure.backup.PolicyFileShare`. In this policy, you can specify the exact backup schedule and retention periods. For illustrative purposes, we've used 11:59 PM UTC as the backup time, daily frequency, and 30 days retention for daily backups. You can adjust the schedule and retention to fit your requirements.
4. With `azure.backup.ProtectedFileShare`, we associate a file share with the previously defined backup policy. This association means backups will be taken according to the policy's schedule and retained for the duration specified.

Please replace `your-resource-group`, `your-recovery-vault-name`, `your-storage-account-id`, and `your-file-share-name` with the actual names of your Azure resources.

After running this program with the Pulumi CLI, you will have set up immediate on-demand backups for your Azure File Shares. You can also invoke backups on-demand via Azure CLI or Azure PowerShell in addition to this scheduled backup through Pulumi.

To invoke an on-demand backup, you can use Azure Portal, Azure CLI, or PowerShell scripting, but with Pulumi, the typical workflow involves setting up scheduled backups that run on the defined policy.

Remember to configure your Azure Provider with the appropriate credentials before running this Pulumi program, and be aware of any costs associated with these services in Azure.