functions/Get-DbaAvailabilityGroup.ps1
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#ValidationTags#Messaging,FlowControl,Pipeline,CodeStyle# function Get-DbaAvailabilityGroup { <# .SYNOPSIS Returns availability group objects from a SQL Server instance. .DESCRIPTION Returns availability group objects from a SQL Server instance. Default view provides most common set of properties for information on the Availability Group(s). .PARAMETER SqlInstance The target SQL Server instance or instances. You must have sysadmin access and server version must be SQL Server version 2012 or higher. .PARAMETER SqlCredential Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential) .PARAMETER AvailabilityGroup Return only specific availability groups. .PARAMETER IsPrimary If this switch is enabled, a boolean indicating whether SqlInstance is the Primary replica in the AG is returned. .PARAMETER EnableException By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message. This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting. Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch. .NOTES Tags: Hadr, HA, AG, AvailabilityGroup Author: Shawn Melton (@wsmelton) | Chrissy LeMaire (@cl) Website: https://dbatools.io Copyright: (c) 2018 by dbatools, licensed under MIT License: MIT https://opensource.org/licenses/MIT .LINK https://dbatools.io/Get-DbaAvailabilityGroup .EXAMPLE PS C:\> Get-DbaAvailabilityGroup -SqlInstance sqlserver2014a Returns basic information on all the Availability Group(s) found on sqlserver2014a. .EXAMPLE PS C:\> Get-DbaAvailabilityGroup -SqlInstance sqlserver2014a -AvailabilityGroup AG-a Shows basic information on the Availability Group AG-a on sqlserver2014a. .EXAMPLE PS C:\> Get-DbaAvailabilityGroup -SqlInstance sqlserver2014a | Select * Returns full object properties on all Availability Group(s) on sqlserver2014a. .EXAMPLE PS C:\> Get-DbaAvailabilityGroup -SqlInstance sqlserver2014a | Select-Object -ExpandProperty PrimaryReplicaServerName Returns the SQL Server instancename of the primary replica as a string .EXAMPLE PS C:\> Get-DbaAvailabilityGroup -SqlInstance sqlserver2014a -AvailabilityGroup AG-a -IsPrimary Returns true/false if the server, sqlserver2014a, is the primary replica for AG-a Availability Group. #> [CmdletBinding()] param ( [parameter(Mandatory, ValueFromPipeline)] [Alias("ServerInstance", "SqlServer")] [DbaInstanceParameter[]]$SqlInstance, [PSCredential]$SqlCredential, [string[]]$AvailabilityGroup, [switch]$IsPrimary, [switch]$EnableException ) process { foreach ($instance in $SqlInstance) { try { $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential -MinimumVersion 11 } catch { Stop-Function -Message "Failure." -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } if (-not $server.IsHadrEnabled) { Stop-Function -Message "Availability Group (HADR) is not configured for the instance: $instance." -Target $instance -Continue } $ags = $server.AvailabilityGroups if ($AvailabilityGroup) { $ags = $ags | Where-Object Name -in $AvailabilityGroup } foreach ($ag in $ags) { Add-Member -Force -InputObject $ag -MemberType NoteProperty -Name ComputerName -value $server.ComputerName Add-Member -Force -InputObject $ag -MemberType NoteProperty -Name InstanceName -value $server.ServiceName Add-Member -Force -InputObject $ag -MemberType NoteProperty -Name SqlInstance -value $server.DomainInstanceName if ($IsPrimary) { $defaults = 'ComputerName', 'InstanceName', 'SqlInstance', 'Name as AvailabilityGroup', 'IsPrimary' Add-Member -Force -InputObject $ag -MemberType NoteProperty -Name IsPrimary -Value ($ag.PrimaryReplicaServerName -eq $server.Name) Select-DefaultView -InputObject $ag -Property $defaults } else { $defaults = 'ComputerName', 'InstanceName', 'SqlInstance', 'LocalReplicaRole', 'Name as AvailabilityGroup', 'PrimaryReplicaServerName as PrimaryReplica', 'ClusterType', 'DtcSupportEnabled', 'AutomatedBackupPreference', 'AvailabilityReplicas', 'AvailabilityDatabases', 'AvailabilityGroupListeners' Select-DefaultView -InputObject $ag -Property $defaults } } } } } |