PSCI

1.1.0

dsc/ext/PsGallery/xSQLServer.7.0.0.0/Examples/Resources/xSQLServerAlwaysOnAvailabilityGroupReplica/2-RemoveAvailabilityGroupReplica.ps1

<#
.EXAMPLE
    This example shows how to ensure that the Availability Group Replica 'SQL2' does not exist in the Availability Group 'TestAG'.
#>

$ConfigurationData = @{
    AllNodes = @(
        @{
            NodeName= '*'
            SQLInstanceName = 'MSSQLSERVER'
            AvailabilityGroupName = 'TestAG'
        },

        @{
            NodeName = 'SQL1'
            Role = 'PrimaryReplica'
        },

        @{
            NodeName = 'SQL2'
            Role = 'SecondaryReplica'
        }
    )
}

Configuration Example
{
    param(
        [Parameter(Mandatory = $true)]
        [PSCredential]
        $SysAdminAccount
    )

    Import-DscResource -ModuleName xSqlServer

    Node $AllNodes.NodeName {
        # Adding the required service account to allow the cluster to log into SQL
        xSQLServerLogin AddNTServiceClusSvc
        {
            Ensure = 'Present'
            Name = 'NT SERVICE\ClusSvc'
            LoginType = 'WindowsUser'
            SQLServer = $Node.NodeName
            SQLInstanceName = $Node.SQLInstanceName
            PsDscRunAsCredential = $SysAdminAccount
        }

        # Add the required permissions to the cluster service login
        xSQLServerPermission AddNTServiceClusSvcPermissions
        {
            DependsOn = '[xSQLServerLogin]AddNTServiceClusSvc'
            Ensure = 'Present'
            NodeName = $Node.NodeName
            InstanceName = $Node.SqlInstanceName
            Principal = 'NT SERVICE\ClusSvc'
            Permission = 'AlterAnyAvailabilityGroup','ViewServerState'
            PsDscRunAsCredential = $SysAdminAccount
        }

        # Create a DatabaseMirroring endpoint
        xSQLServerEndpoint HADREndpoint
        {
            EndPointName = 'HADR'
            Ensure = 'Present'
            Port = 5022
            SQLServer = $Node.NodeName
            SQLInstanceName = $Node.SQLInstanceName
            PsDscRunAsCredential = $SysAdminAccount
        }

        if ( $Node.Role -eq 'PrimaryReplica' )
        {
            # Create the availability group on the instance tagged as the primary replica
            xSQLServerAlwaysOnAvailabilityGroup AddTestAG
            {
                Ensure = 'Present'
                Name = $Node.AvailabilityGroupName
                SQLInstanceName = $Node.SQLInstanceName
                SQLServer = $Node.NodeName
                DependsOn = '[xSQLServerEndpoint]HADREndpoint','[xSQLServerPermission]AddNTServiceClusSvcPermissions'
                PsDscRunAsCredential = $SysAdminAccount
            }
        }

        if ( $Node.Role -eq 'SecondaryReplica' )
        {
            # Add the availability group replica to the availability group
            xSQLServerAlwaysOnAvailabilityGroupReplica AddReplica
            {
                Ensure = 'Absent'
                Name = $Node.NodeName
                AvailabilityGroupName = $Node.AvailabilityGroupName
                SQLServer = $Node.NodeName
                SQLInstanceName = $Node.SQLInstanceName
                PrimaryReplicaSQLServer = ( $AllNodes | Where-Object { $_.Role -eq 'PrimaryReplica' } ).NodeName
                PrimaryReplicaSQLInstanceName = ( $AllNodes | Where-Object { $_.Role -eq 'PrimaryReplica' } ).SQLInstanceName
            }
        }
    }
}