Number or type of endpoints for a service
The following table shows the allowed changes to a service during an update: Changes permitted to hosting, services, and roles
#Please update your cloud station client upgrade
Distribution of roles across upgrade domains.Initiating multiple mutating operations on an ongoing deployment.Allowed service changes during an update.This topic covers the following information about Azure updates: If the service consists of only one instance of one role, your service will be unavailable until the in-place update has finished. Your service must define at least two instances of a role for that role to be updated in-place without downtime. While the terms update and upgrade have slightly different meaning in the context Azure, they can be used interchangeably for the processes and descriptions of the features in this document. For more information, see How the update proceeds later in this article. By stopping only the instances running in the current upgrade domain, Azure makes sure that an update occurs with the least possible impact to the running service.
Azure updates all of the instances in a given upgrade domain – stopping them, updating them, bringing them back on-line – then moves onto the next domain. When you perform an in-place update of one or more roles in your service, Azure updates sets of role instances according to the upgrade domain to which they belong. For more information about the upgradeDomainCount attribute, see Azure Cloud Services Definition Schema (.csdef File). You can specify a different number of upgrade domains by including the upgradeDomainCount attribute in the service’s definition file (.csdef). The default number of upgrade domains is 5. Azure updates a cloud service one UD at a time, which allows instances in other UDs to continue serving traffic. Upgrade domains (UD) are logical sets of role instances that are updated as a group. Update an Azure ServiceĪzure organizes your role instances into logical groupings called upgrade domains (UD). This article discusses the details of this last step – the rolling upgrade. Finally, Azure performs a rolling upgrade to incrementally update the tenant to the new version or guest OS, while preserving your availability. Next, Azure reserves compute and network resources for the cloud service based on the requirements of the new cloud service version. First, the binaries and configuration files for the new cloud service or OS version must be uploaded. Updating a cloud service, including both its roles and guest OS, is a three step process. New deployments should use the new Azure Resource Manager based deployment model Azure Cloud Services (extended support). Cloud Services (classic) is now deprecated for new customers and will be retired on August 31st, 2024 for all customers.
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