[Windows Azure] How to Manage Cloud Services

How to Manage Cloud Services

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In the Cloud Services area of the Windows Azure Management Portal, you can update a service role or a deployment, promote a staged deployment to production, link resources to your cloud service so that you can see the resource dependencies and scale the resources together, and delete a cloud service or a deployment.

Table of Contents

• How to: Update a cloud service role or deployment
• How to: Swap deployments to promote a staged deployment to production
• How to: Link a resource to a cloud service
• How to: Delete deployments and a cloud service

How to: Update a cloud service role or deployment

If you need to update the application code for your cloud service, use Update on the dashboard, Cloud Services page, or Instances page. You can update a single role or all roles. You'll need to upload a new service package and service configuration file.

1. In the Windows Azure Management Portal, on the dashboard, Cloud Services page, or Instances page, click Update .

   Update Deployment opens.

   

2. In Deployment label , enter a name to identify the deployment (for example, mycloudservicev2). You'll find the deployment name under quick start on the dashboard.

3. In Package file , use Browse to upload the service package file (.cspkg).

4. In Configuration file , use Browse to upload the service configuration file (.cscfg).

5. In Role , select All if you want to upgrade all roles in the cloud service. To perform a role upgrade, select the role you want to upgrade. Even if you select a specific role to update, the updates in the service configuration file are applied to all roles.

6. If the upgrade will change the number of roles or the size of any role, select the Allow update if role sizes or number of roles changes check box to enable the update to proceed.

   Be aware that if you change the size of a role (that is, the size of a virtual machine that hosts a role instance) or the number of roles, each role instance (virtual machine) must be re-imaged, and any local data will be lost.

7. If any service roles have only one role instance, select the Update even if one or more role contain a single instance check box to enable the upgrade to proceed.

   Windows Azure can only guarantee 99.95 percent service availability during a cloud service update if each role has at least two role instances (virtual machines). That enables one virtual machine to process client requests while the other is being updated.

8. Click OK (checkmark) to begin updating the service.

How to: Swap deployments to promote a staged deployment to production

Use Swap to promote a staging deployment of a cloud service to production. When you decide to deploy a new release of a cloud service, you can stage and test your new release in your cloud service staging environment while your customers are using the current release in production. When you're ready to promote the new release to production, you can use Swap to switch the URLs by which the two deployments are addressed.

You can swap deployments from the Cloud Services page or the dashboard.

1. In the Management Portal, click Cloud Services .

2. In the list of cloud services, click the cloud service to select it.

3. Click Swap .

   The following confirmation prompt opens.

   

4. After you verify the deployment information, click Yes to swap the deployments.

The deployment swap happens quickly because the only thing that changes is the virtual IP addresses (VIPs) for the deployments.

To save compute costs, you can delete the deployment in the staging environment when you're sure the new production deployment is performing as expected.

How to: Link a resource to a cloud service

To show your cloud service's dependencies on other resources, you can link a Windows Azure SQL Database instance or a storage account to the cloud service. You an link and unlink resources on the Linked Resources page. Then monitor their usage on the cloud service dashboard. If a linked storage account has monitoring turned on, you can monitor Total Requests on the cloud service dashboard.

Use Link to link a new or existing SQL Database instance or storage account to your cloud service. You can then scale the database along with the cloud service role that is using it on the Scale page. (A storage account scales automatically as usage increases.) For more information, see How to Scale a Cloud Service and Linked Resources.

You also can monitor, manage, and scale the database in the Databases node of the Management Portal.

"Linking" a resource in this sense doesn't connect your app to the resource. If you create a new database using Link , you'll need to add the connection strings to your application code and then upgrade the cloud service. You'll also need to add connection strings if your app uses resources in a linked storage account.

The following procedure describes how to link a new SQL Database instance, deployed on a new SQL Database server, to a cloud service.

To link a SQL Database instance to a cloud service

1. In the Management Portal, click Cloud Services . Then click the name of the cloud service to open the dashboard.

2. Click Linked Resources .

   The Linked Resources page opens.

   

3. Click either Link a Resource or Link .

   The Link Resource wizard starts.

   

4. Click Create a new resource or Link an existing resource .

5. Choose the type of resource to link. In the Management Portal, click SQL Database . (The Preview Management Portal does not support linking a storage account to a cloud service.)

6. To complete the database configuration, follow instructions in help for the SQL Databases area of the Management Portal.

You can follow the progress of the linking operation in the message area.

When linking is complete, you can monitor the status of the linked resource on the cloud service dashboard. For information about scaling a linked SQL Database, see How to Scale a Cloud Service and Linked Resources.

To unlink a linked resource

1. In the Management Portal, click Cloud Services . Then click the name of the cloud service to open the dashboard.

2. Click Linked Resources , and then select the resource.

3. Click Unlink . Then click Yes at the confirmation prompt.

Unlinking a SQL Database has no effect on the database or the application's connections to the database. You can still manage the database in the SQL Databases area of the Management Portal.

How to: Delete deployments and a cloud service

Before you can delete a cloud service, you must delete each existing deployment.

To save compute costs, you can delete your staging deployment after you verify that your production deployment is working as expected. You are billed compute costs for role instances even if a cloud service is not running.

Use the following procedure to delete a deployment or your cloud service.

1. In the Management Portal, click Cloud Services .

2. Select the cloud service, and then click Delete . (To select a cloud service without opening the dashboard, click anywhere except the name in the cloud service entry.)

   If you have a deployment in staging or production, you will see a menu of choices similar to the following one at the bottom of the window. Before you can delete the cloud service, you must delete any existing deployments.

   

3. To delete a deployment, click Delete production deployment or Delete staging deployment . Then, at the confirmation prompt, click Yes .

4. If you plan to delete the cloud service, repeat step 3, if needed, to delete your other deployment.

5. To delete the cloud service, click Delete cloud service . Then, at the confirmation prompt, click Yes .