Question

我一直在尝试编写一个powershell程序来检查群集是否存在。如果没有，那么它会创建它并将其自身添加到它。如果另一台计算机醒来，它会检查群集是否存在，如果存在，则将其自身添加到群集中。

我在尝试从群集IP地址获取对群集对象的引用时遇到问题。每个节点都知道其地址和集群地址。我想避免每个节点都有一个其集群中所有其他节点的列表。

我发现我需要查看非群集IP地址才能使用-nlbcluster工作。指定群集IP地址只是错误。

我有什么方法可以做到这一点，每次我从群集中添加或删除节点时都不必在每个节点上更新此列表。我想我也想避免一个节点醒来的情况，并且必须轮询“主”列表中的每台机器，寻找一个机器，以便将自己添加到集群中。

Answer 1

这有帮助吗？我刚刚做过，但从来没有机会完全测试它：

#Add a new node to NLB cluster
#Tested with Windows Server 2008 R2 only
#Requires WSManCredSSP Server Role Enabled on cluster Host
Function join-NlbCluster {
    Param(
        [Parameter(Mandatory=$true)]
        $clusterHostname,
        [Parameter(Mandatory=$true)]
        $newNodename,
        [Parameter(Mandatory=$true)]
        $newNodeinterfaceName,
        [Parameter(Mandatory=$true)]
        $userName,
        [Parameter(Mandatory=$true)]
        $password
        )
    Write-Verbose "Verifiying if the remote node has NLB installed"
    If (!((Get-OSFeature -computerName $newNodename -featureName NLB).Installed)) {
        Write-Error "NLB feature is not installed on $newNodename. Cannot continue."
        return $false
    }
    $cmdBlock = "Import-Module networkLoadBalancingClusters
    `$nlbCluster = Get-nlbCluster -HostName $clusterHostName
    if (`$nlbCluster) {
        `$newNode = Add-NlbClusterNode -InputObject `$nlbCluster -NewNodeName $newNodename -NewNodeInterface `"$newNodeinterfaceName`"
        if (`$newNode) {
            Write-Host `"New node is added to cluster`"
            return `$newNode
        } else {
            Write-Host `"Error Creating the NLB Cluster`"
            return `$false
        }
    } else {
        Write-Host `"No NLB cluster found on $clusterHostname`"
        return `$false
    }"

    Write-Verbose $cmdBlock
    $scriptBlock = $ExecutionContext.InvokeCommand.NewScriptBlock($cmdBlock)
    try {
        Write-Verbose "Creating new NLB Cluster"
        Invoke-Command -ComputerName $clusterHostName -ScriptBlock $scriptBlock -HideComputerName -Authentication Credssp -Credential (Get-PSCredential -userName $userName -Password $password)
    }
    catch {
        Write-Verbose $_
        return $false
    }
}

Answer 2

可以在群集中的所有节点上运行以下脚本，如果群集不存在则创建它，否则只需将当前计算机添加到现有群集。您需要做的就是确保群集中的所有计算机都具有相同名称的专用卡。在下面的示例中，网卡名为“NLB”。

Import-Module ServerManager

# Interface cards should be named the same and have a fixed IP
$interfaceName = "NLB"
$clusterName = "NLB-Cluster"
$clusterIpAddress = "1.2.3.0"
$clusterSubnet = "255.0.0.0"

# Install Network Load Balancing and Tools
Write-Host "Install Network Load Balancing and Tools"
Add-WindowsFeature NLB, RSAT-NLB
Import-Module NetworkLoadBalancingClusters

# If the cluster hasn't been created yet then create it
if (!(Get-NlbCluster -HostName $clusterIpAddress -ErrorAction SilentlyContinue))
{
    Write-Host "Creating NLB Cluster: $clusterName" -ForegroundColor yellow 

    # Create Cluster (default unicast)
    New-NlbCluster -InterfaceName $interfaceName -ClusterName $clusterName -ClusterPrimaryIP $clusterIpAddress -SubnetMask $clusterSubnet 

    # Remove defaults
    Write-Host "Removing default port rules" -ForegroundColor yellow 
    Get-NlbClusterPortRule | Remove-NlbClusterPortRule -Force

    # Create port rules
    Get-NlbCluster | Add-NlbClusterPortRule -StartPort 80 -EndPort 80 -Protocol TCP -Affinity None | Out-Null
    Get-NlbCluster | Add-NlbClusterPortRule -StartPort 443 -EndPort 443 -Protocol TCP -Affinity None | Out-Null 
}
else
{
    Get-NlbCluster 
}

# if this node isn't already a member of a cluster then add it
if(!(Get-NlbClusterNode -HostName $env:COMPUTERNAME))
{
    # Add node to cluster
    Write-Host "Adding node to cluster: $clusterName" -ForegroundColor yellow 
    Get-NlbCluster -HostName $clusterIpAddress | Add-NlbClusterNode -NewNodeName $env:COMPUTERNAME -NewNodeInterface $interfaceName
}
else
{
    Get-NlbClusterNode
}

加入现有的NLB群集

2 个答案: