Invoke-Cau Run

Module:
clusterawareupdating
Performs a scan of cluster nodes for applicable updates and installs those updates through an updating run on the specified cluster.

Syntax 

Invoke-CauRun
      [-MaxFailedNodes <Int32>]
      [-MaxRetriesPerNode <Int32>]
      [-NodeOrder <String[]>]
      [-PreUpdateScript <String>]
      [-PostUpdateScript <String>]
      [-ConfigurationName <String>]
      [-RequireAllNodesOnline]
      [-WarnAfter <TimeSpan>]
      [-StopAfter <TimeSpan>]
      [-RebootTimeoutMinutes <Int32>]
      [-SeparateReboots]
      [-EnableFirewallRules]
      [-FailbackMode <FailbackType>]
      [-SuspendClusterNodeTimeoutMinutes <Int32>]
      [-Force]
      [[-ClusterName] <String>]
      [[-CauPluginName] <String[]>]
      [[-Credential] <PSCredential>]
      [-CauPluginArguments <Hashtable[]>]
      [-RunPluginsSerially]
      [-StopOnPluginFailure]
      [-WhatIf]
      [-Confirm]
      [<CommonParameters>]
Invoke-CauRun
      [-ForceRecovery]
      [-Force]
      [[-ClusterName] <String>]
      [[-Credential] <PSCredential>]
      [-WhatIf]
      [-Confirm]
      [<CommonParameters>]

Description

The Invoke-CauRun cmdlet performs a scan of cluster nodes for applicable updates and installs those updates through an updating run on the specified cluster. The updating run process includes the following:

  • Scanning for and downloading applicable updates on each cluster node.
  • Moving currently running clustered roles off each cluster node.
  • Installing the updates on each cluster node.
  • Restarting cluster nodes if required by the installed updates.
  • Moving the clustered roles back to the original nodes.
  • The updating run process also includes ensuring that quorum is maintained, checking for additional updates that can only be installed after the initial set of updates are installed, and saving a report of the actions taken.

To run this cmdlet with the PostUpdateScript or PreUpdateScript parameter, Windows PowerShell remoting must be enabled on each node. To do this, run the Enable-PSRemoting cmdlet. In addition, ensure that the Windows Remote Management - Compatibility Mode (HTTP-In) firewall exception is enabled on each node.

Examples

Example 1: Preform a scan and a full updating run on the specified cluster 

PS C:\> Invoke-CauRun -ClusterName "CONTOSO-FC1" -CauPluginName "Microsoft.WindowsUpdatePlugin" -MaxFailedNodes -1 -MaxRetriesPerNode 3 -RequireAllNodesOnline -Force

This command performs a scan and a full updating run on the cluster named CONTOSO-FC1. This cmdlet uses the Microsoft.WindowsUpdatePlugin plug-in and requires that all cluster nodes be online before the running this cmdlet. In addition, this cmdlet allows no more than three retries per node before marking the node as failed, and allows no more than one node to fail before marking the entire updating run as failed. Because the command specifies the Force parameter, the cmdlet runs without displaying confirmation prompts.

Example 2: Preform a scan and a full updating run on the specified cluster using multiple plug-ins 

PS C:\> Invoke-CauRun -ClusterName CONTOSO-FC1 -CauPluginName Microsoft.WindowsUpdatePlugin, Microsoft.HotfixPlugin -CauPluginArguments @{ }, @{ 'HotfixRootFolderPath' = '\\CauHotfixSrv\shareName' } -EnableFirewallRules -StopOnPluginFailure -SeparateReboots -Force

This command performs a scan and a full updating run on the cluster named CONTOSO-FC1. This cmdlet uses the Microsoft.WindowsUpdatePlugin plug-in with the default configuration, and the Microsoft.HotfixPlugin plug-in using the hotfix root folder \\CauHotfixSrv\shareName and the default hotfix configuration file. If it is not already enabled, the Remote Shutdown Windows Firewall rule group is enabled on each cluster node before the updating run. If a failure occurs during the installation of updates on a node by Microsoft.WindowsUpdatePlugin , updates are not applied by Microsoft.HotfixPlugin plug-in . If the installation of updates by Microsoft.WindowsUpdatePlugin requires a node to restart, the node restarts before Microsoft.HotfixPlugin plug-in installs updates. Because the command specifies the Force parameter, the cmdlet runs without displaying confirmation prompts.

Example 3: Recover from a previous updating run that failed on the specified cluster 

PS C:\> Invoke-CauRun -ClusterName "CONTOSO-FC1"-ForceRecovery -Force

This command recovers from a previous Updating Run that failed and left the cluster in a Locked state for the cluster named CONTOSO-FC1. Because the command specifies the Force parameter, the recovery is performed without confirmation prompts.

Required Parameters

-ForceRecovery

Indicates that the cmdlet recovers from a previous failed run that left the cluster in a Locked state.

This switch defeats the synchronization mechanism used to prevent two update coordinators from accidentally updating the same cluster at the same time. Use with care.

Type: SwitchParameter
Aliases: Recover
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False

Optional Parameters

-CauPluginArguments

Specifies a set of name=value pairs for each updating plug-in to use. For instance, to specify a Domain argument for one plug-in:

  • @{Domain=Domain.local} You can specify multiple pairs in a set separated with semicolons. For instance:
  • @{name1=value1;name2=value2;name3=value3} These name=value pairs must be meaningful to the CauPluginName that you specify. If you specify arguments for more than one plug-in, provide the sets of name=value pairs in the order that you pass values in CauPluginName , separated by commas. For instance:
  • @{name1=value1;name2=value2;name3=value3},@{name4=value4;name5=value5}

For the default Microsoft.WindowsUpdatePlugin plug-in, no arguments are needed. The following arguments are optional:

  • 'IncludeRecommendedUpdates'='<Value>' : Boolean value to indicate that recommended updates will be applied in addition to important updates on each node. If not specified, the default value is 'False' . -- A standard Windows Update Agent query string that specifies criteria used by the Windows Update Agent to filter the updates that will be applied to each node. For a name, use QueryString and for a value, enclose the full query in quotation marks. If not specified, then the Microsoft.WindowsUpdatePlugin plug-in by default uses the following argument:
  • QueryString="IsInstalled=0 and Type='Software' and IsHidden=0 and IsAssigned=1"

For more information about query strings for the default Microsoft.WindowsUpdatePlugin plug-in and the criteria such as IsInstalled that can be included in the query strings, see IUpdateSearcher::Search method . For the Microsoft.HotfixPlugin plug-in, the following argument is required:

  • HotfixRootFolderPath : The UNC path to a hotfix root folder in an SMB share with a structure that contains the updates to apply and that contains the hotfix configuration file.

The following arguments are optional for the Microsoft.HotfixPlugin plug-in:

  • RequireSmbEncryption=<Value> : Boolean value to indicate that SMB Encryption is enforced for data accessed from the SMB share. If not specified, the default value is False. To ensure the integrity of the data accessed from the SMB share, the plug-in requires that the share is enabled for either SMB signing or SMB Encryption.
  • DisableAclChecks=<Value> : Boolean value to indicate that the plug-in checks for sufficient permissions on the hotfix root folder and the hotfix configuration file. If not specified, the default value is False.
  • HotfixInstallerTimeoutMinutes=<Integer> : The length of time in minutes that the plug-in allows the hotfix installer process to return. If not specified, the default value is 30 minutes.
  • HotfixConfigFileName=<name> : Name for the hotfix configuration file. If not specified, the default name DefaultHotfixConfig.xml is used.

For more information about required and optional arguments for the Microsoft.HotfixPlugin plug-in, see How CAU Plug-ins Work .

Type: Hashtable[]
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-CauPluginName

Specifies one or more plug-ins to use when performing updates. You can specify multiple values separated with commas. The default is the Microsoft.WindowsUpdatePlugin plug-in. This plug-in coordinates the Windows Update Agent software resident on each cluster node, the same software that is used when updates are downloaded from Windows Update or Microsoft Update, or from a Windows Server Update Services (WSUS) server. For more information about how plug-ins work with CAU, see How CAU Plug-ins Work .

Type: String[]
Position: 1
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-ClusterName

Specifies an array of clusters for which this cmdlet installs updates.

Type: String
Position: 0
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-ConfigurationName

Specifies the Windows PowerShell session configuration that defines the session in which scripts are run, specified by PreUpdateScript and PostUpdateScript parameters, and can limit the cmdlets that are available to run. If either a pre-update or post-update script is specified but a configuration name is not specified, then the default session configuration that is built into Windows PowerShell is used.

Type: String
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-Confirm

Prompts you for confirmation before running the cmdlet.

Type: SwitchParameter
Aliases: cf
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False
-Credential

Specifies the administrative credentials for the target cluster.

Type: PSCredential
Position: 2
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-EnableFirewallRules

Enables the Remote Shutdown Windows Firewall rule group on each cluster node, if it is not already enabled. If the EnableFirewallRules parameter is specified, CAU automatically re-enables the Remote Shutdown rule group each time the CAU clustered role performs an updating run, in case the rules are disabled manually in the intervening time. Enabling this rule group permits inbound communication to each cluster node during each updating run that allows CAU to shut down and restart the node remotely (if the installation of an update requires a restart). If Windows Firewall is in use on the cluster nodes and the rule group is not enabled, the updating run will fail. The Remote Shutdown Windows Firewall rule group is not enabled when it will conflict with Group Policy settings that are configured for Windows Firewall.

Type: SwitchParameter
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-FailbackMode

Specifies the method used to bring drained workloads back to the node, at the end of updating the node. Drained workloads are workloads that were previously run on the node, but were moved to another node. The acceptable values for this parameter are:

  • NoFailback
  • Immediate
  • Policy

The default value is Immediate.

Type: FailbackType
Parameter Sets: NoFailback, Immediate, Policy
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-Force

Forces the command to run without asking for user confirmation.

Type: SwitchParameter
Aliases: f
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-MaxFailedNodes

Specifies the maximum number of nodes on which updating can fail. If one more than this number of nodes fails, then the updating run is stopped. The range is from zero (0) through 1 less than the number of cluster nodes. The default for most clusters is approximately one-third of the number of nodes.

Type: Int32
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-MaxRetriesPerNode

Specifies the maximum number of times that the update process (including any pre-update and post-update scripts) is retried per node. The maximum is 64 and the default is 3.

Type: Int32
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-NodeOrder

Specifies an array of cluster nodes names in the order that they are updated.

Type: String[]
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-PostUpdateScript

Specifies the path and file name for a Windows PowerShell script to run on each node after updating finishes, and just after the node is brought out of Maintenance mode. The file name extension must be .ps1 and the total length of the path plus the file name must be no longer than 260 characters. As a best practice, the script should be located on a disk in cluster storage, or at a highly available network share, to ensure that it is always accessible to all the cluster nodes.

Type: String
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-PreUpdateScript

Specifies the path and file name for a Windows PowerShell script to run on each node before updating begins, and before the node is put into Maintenance mode. The file name extension must be .ps1 and the total length of the path plus the file name must be no longer than 260 characters. As a best practice, the script should be located on a disk in cluster storage, or at a highly available network share, to ensure that the script is always accessible to all the cluster nodes. If a pre-update script fails, the node is not updated.

Type: String
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-RebootTimeoutMinutes

Specifies the time in minutes that CAU allows for the restarting of a node. If the restart does not complete within this time, then the updating run on that node is marked as failed.

Type: Int32
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-RequireAllNodesOnline

Indicates that all cluster nodes must be online and reachable before the update begins.

Type: SwitchParameter
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-RunPluginsSerially

Indicates that CAU will scan each cluster node for applicable updates and stage the updates for each plug-in in the plug-in order passed into the CauPluginName parameter when multiple plug-ins are used during an updating run. By default, CAU scans and stages the applicable updates for all plug-ins in parallel. Regardless of the configuration of this parameter, CAU installs the applicable updates for each plug-in sequentially.

The parameter is valid only when multiple plug-ins are specified for the CauPluginName parameter. If a single plug-in is specified, a warning appears.

Type: SwitchParameter
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-SeparateReboots

Indicates that that CAU will shut down and restart a cluster node after each plug-in installs updates on the node, if the installation of an update by a plug-in requires a restart when multiple plug-ins are used during an Updating Run. By default, during an updating run, all plug-ins complete the installation of updates on a cluster node before the node restarts one time.

The parameter is valid only when multiple plug-ins are specified for the CauPluginName parameter. If a single plug-in is specified, a warning appears.

Type: SwitchParameter
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-StopAfter

Specifies the time in minutes after which the updating run is canceled if it has not completed. The time span can be expressed in the standard ways available in Windows PowerShell, for instance, 01:30:00 represents one hour and thirty minutes. By default, the updating run is allowed an unlimited amount of time to complete.

If pre-update or post-update scripts are specified, then the entire process of running scripts and performing updates must be complete within this time limit.

Type: TimeSpan
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-StopOnPluginFailure

Indicates that if a failure occurs during the application of updates on a node by any plug-in, subsequent updates on the node that are coordinated by the remaining plug-ins are stopped when multiple plug-ins are used during an Updating Run. By default, a failure by one plug-in does not affect the application of updates on a node by other plug-ins.

The parameter is valid only when multiple plug-ins are specified for the CauPluginName parameter. If a single plug-in is specified, a warning appears.

Type: SwitchParameter
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-SuspendClusterNodeTimeoutMinutes

Specifies the maximum amount of time CAU should wait for the Suspend-ClusterNode cmdlet to succeed if the underlying clustered space is in degraded condition.

If Suspend-ClusterNode fails with ERROR_CLUSTER_SPACE_DEGRADED error, CAU will keep retrying for SuspendClusterNodeTimeoutMinutes or suspend the call if the command succeeds.

The retries for this error do not count towards the MaxRetriesPerNode parameter set by the user parameter set by the user.

The timeout value is per cluster node. So CAU could potentially spend the amount of time specified for this value for every node in the cluster in the worst case.

Type: Int32
Position: Named
Default value: None
Accept pipeline input: False
Accept wildcard characters: False
-WarnAfter

Specifies the time in minutes after which a warning is logged if the Updating Run, including any pre-update and post-update scripts, has not completed. By default, no warning is logged, regardless of the time taken by the updating run.

Type: TimeSpan
Position: Named
Default value: None
Accept pipeline input: False
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: False
Accept pipeline input: False
Accept wildcard characters: False

Inputs

None

Outputs

Microsoft.ClusterAwareUpdating.ActivityIdMap

Outputs

Microsoft.ClusterAwareUpdating.ClusterResult

Outputs

Microsoft.ClusterAwareUpdating.NodeResult

Outputs

Microsoft.ClusterAwareUpdating.NodeStatusNotification

Outputs

Microsoft.ClusterAwareUpdating.UpdateInfo

Outputs

Microsoft.ClusterAwareUpdating.UpdateInstallResult

Outputs

Microsoft.ClusterAwareUpdating.UpdateStagingResult