Set-AzVmssRollingUpgradePolicy
Sets the VMSS rolling upgrade policy properties.
Syntax
Set-AzVmssRollingUpgradePolicy
[-VirtualMachineScaleSet] <PSVirtualMachineScaleSet>
[[-MaxBatchInstancePercent] <Int32>]
[[-MaxUnhealthyInstancePercent] <Int32>]
[[-MaxUnhealthyUpgradedInstancePercent] <Int32>]
[-PauseTimeBetweenBatches <String>]
[-EnableCrossZoneUpgrade <Boolean>]
[-PrioritizeUnhealthyInstance <Boolean>]
[-MaxSurge <Boolean>]
[-DefaultProfile <IAzureContextContainer>]
[-WhatIf]
[-Confirm]
[<CommonParameters>] Description
Sets the VMSS rolling upgrade policy properties.
Examples
Example 1
Set-AzVmssRollingUpgradePolicy -VirtualMachineScaleSet $vmss -MaxBatchInstancePercent 40 -MaxUnhealthyInstancePercent 35 -MaxUnhealthyUpgradedInstancePercent 30 -PauseTimeBetweenBatches "PT30S"This command sets 40 percent for MaxBatchInstance, 35 percent for MaxUnhealthyInstance, 30 percent for MaxUnhealthyUpgradedInstance and 30 second pause time between batches for VMSS local object $vmss.
Parameters
-Confirm
Prompts you for confirmation before running the cmdlet.
| Type: | SwitchParameter |
| Aliases: | cf |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-DefaultProfile
The credentials, account, tenant, and subscription used for communication with azure.
| Type: | IAzureContextContainer |
| Aliases: | AzContext, AzureRmContext, AzureCredential |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
-EnableCrossZoneUpgrade
Allow VMSS to ignore AZ boundaries when constructing upgrade batches. Take into consideration the Update Domain and maxBatchInstancePercent to determine the batch size.
| Type: | Boolean |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-MaxBatchInstancePercent
The maximum percent of total virtual machine instances that will be upgraded simultaneously by the rolling upgrade in one batch. As this is a maximum, unhealthy instances in previous or future batches can cause the percentage of instances in a batch to decrease to ensure higher reliability. If the value is not specified, it is set to 20.
| Type: | Int32 |
| Position: | 1 |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-MaxSurge
If enabled, VMSS will create new virtual machines to upgrade the scale set, rather than updating the existing virtual machines. Existing virtual machines will be deleted once the new virtual machines are created for each batch.
| Type: | Nullable<T>[Boolean] |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-MaxUnhealthyInstancePercent
The maximum percentage of the total virtual machine instances in the scale set that can be simultaneously unhealthy, either as a result of being upgraded, or by being found in an unhealthy state by the virtual machine health checks before the rolling upgrade aborts. This constraint will be checked prior to starting any batch. If the value is not specified, it is set to 20.
| Type: | Int32 |
| Position: | 2 |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-MaxUnhealthyUpgradedInstancePercent
The maximum percentage of upgraded virtual machine instances that can be found to be in an unhealthy state. This check will happen after each batch is upgraded. If this percentage is ever exceeded, the rolling update aborts. If the value is not specified, it is set to 20.
| Type: | Int32 |
| Position: | 3 |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-PauseTimeBetweenBatches
The wait time between completing the update for all virtual machines in one batch and starting the next batch. The time duration should be specified in ISO 8601 format. The default value is 0 seconds (PT0S).
| Type: | String |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-PrioritizeUnhealthyInstance
Upgrade all unhealthy instances in a scale set before any healthy instances.
| Type: | Boolean |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-VirtualMachineScaleSet
Specifies the VMSS object. You can use the New-AzVmssConfig cmdlet to create the object.
| Type: | PSVirtualMachineScaleSet |
| Position: | 0 |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | True |
| Accept wildcard characters: | False |
-WhatIf
Shows what would happen if the cmdlet runs. The cmdlet is not run.
| Type: | SwitchParameter |
| Aliases: | wi |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
