Windows Azure:当应用程序在云上运行时,我可以更改工作角色的实例计数吗

是的,你可以这样做。WindowsAzure公开了管理API,以执行设置和取消设置其他工作角色的任务。

您可以查看lokad.cloud项目的自动缩放界面: http://code.google.com/p/lokad-cloud/wiki/AutoScaling

在QueueService或ScheduledService中,您可以访问属性cloudService.providers.provision,它将授予您对云结构的编程访问权,以便调整为应用程序运行的工作人员数量。

是的,您还可以配置自动缩放应用程序块(Wasabi)来完成这项工作。有关详细信息,请参阅 reponse 和 http://aka.ms/autoscaling :

您还可以使用以下信息: http://blog.maartenballiauw.be/post/2011/03/21/Windows-Azure-and-scaling-how-(NET).aspx

主要是:

var deployment = GetWindowsAzureDeployment();

            string configurationXml = ServiceManagementHelper.DecodeFromBase64String(deployment.Configuration);

            Log.Info("Updating configuration value...");

            var serviceConfiguration = XDocument.Parse(configurationXml);

            serviceConfiguration
                    .Descendants()
                    .Single(d => d.Name.LocalName == "Role" && d.Attributes().Single(a => a.Name.LocalName == "name").Value == RoleName)
                    .Elements()
                    .Single(e => e.Name.LocalName == "Instances")
                    .Attributes()
                    .Single(a => a.Name.LocalName == "count").Value = newInstanceCount.ToString();

            var changeConfigurationInput = new ChangeConfigurationInput();
            changeConfigurationInput.Configuration = ServiceManagementHelper.EncodeToBase64String(serviceConfiguration.ToString(SaveOptions.DisableFormatting));

            Log.Info("Uploading new configuration...");

            ManagementClient.ChangeConfigurationBySlot(SubscriptionId, ServiceName, Slot, changeConfigurationInput);

            Log.Info("Finished uploading new configuration.");