Archive for the ‘Windows 2008 R2 DHCP Cluster’ Category

Clustering DHCP Windows Server 8

On the BUILD conference highlights Microsoft showed new features of windows server 8. one of the new things was clustering DHCP. Now in windows 8 the DHCP clustering is easy to setup and to manage.

Clustering DHCP Windows Server 8 When you have your cluster just add the Role and select DHCP server. Just for the Demo I turned off the second node. Just make sure that you have installed the Windows Role DHCP on both nodes. this is not the cluster Role.

Clustering DHCP Windows Server 8 We choose a netbios name and a IP that will be used for the Clustered DHCP server.

And We select some storage that hold the DHCP files ( DB ) image

image And as I said the Second node is turned off just for the demo to show you the warning the wizard shows you. it is in yellow and says there is only one node.

The Cluster Overview Clustering DHCP Windows Server 8 As you can see the DHCP resource is running on node 1 and in the lower screen you can see the DHCP cluster configuration. Disk , IP, Name. and If you want to change this, this is the place to do this.

If you want to manage the DHCP server just do manage in the Cluster View

image Right click on the DHCP role.

 

Sample overview of the DHCP server Clustering DHCP Windows Server 8

Now that I have turned on the second node I can do a failover. Eh but you did not configure anything on this node Except installing the Windows DHCP role.

Yes but as it is a cluster the configuration moves to the other node.

image Clustering DHCP Windows Server 8 And I can do manage on both nodes or on a management server open the DHCP scope based on the DHCP netbios name.

Clustering DHCP Windows Server 8 Easy as that and the configuration of all the DHCP scopes are here.

A nice new feature of windows server 8.

Clustering DHCP Windows Server 8

On the BUILD conference highlights Microsoft showed new features of windows server 8. one of the new things was clustering DHCP. Now in windows 8 the DHCP clustering is easy to setup and to manage.

Clustering DHCP Windows Server 8 When you have your cluster just add the Role and select DHCP server. Just for the Demo I turned off the second node. Just make sure that you have installed the Windows Role DHCP on both nodes. this is not the cluster Role.

Clustering DHCP Windows Server 8 We choose a netbios name and a IP that will be used for the Clustered DHCP server.

And We select some storage that hold the DHCP files ( DB ) image

image And as I said the Second node is turned off just for the demo to show you the warning the wizard shows you. it is in yellow and says there is only one node.

The Cluster Overview Clustering DHCP Windows Server 8 As you can see the DHCP resource is running on node 1 and in the lower screen you can see the DHCP cluster configuration. Disk , IP, Name. and If you want to change this, this is the place to do this.

If you want to manage the DHCP server just do manage in the Cluster View

image Right click on the DHCP role.

 

Sample overview of the DHCP server Clustering DHCP Windows Server 8

Now that I have turned on the second node I can do a failover. Eh but you did not configure anything on this node Except installing the Windows DHCP role.

Yes but as it is a cluster the configuration moves to the other node.

image Clustering DHCP Windows Server 8 And I can do manage on both nodes or on a management server open the DHCP scope based on the DHCP netbios name.

Clustering DHCP Windows Server 8 Easy as that and the configuration of all the DHCP scopes are here.

A nice new feature of windows server 8.

Powershell Create Windows 2008 R2 Cluster

Teched 2010 Berlin #TEE10 #Teched

For Demo and learning Sites you need often thing that takes only a minute but when you play with it it takes more time than you want.So with this in my mind I created 3 powershell scripts that you can use for building a cluster , NLB Cluster and a MSTDC cluster resource.So If you want to create a Cluster you can do this in the GUI or with a Powershell Script.

So make sure the disk are formatted and that Your network is ok. and if you running this script in a environment with a Windows 2003 DC with DNS. You may have to set extra security to get things working.

You can find the Scripts Here : Powershell Scripts

Powershell Create Cluster Teched 2010 Berlin #TEE10 #Teched

This Cluster creation script creates a two node cluster with a witness disk at your choice. First we do the import of the modules and add the feature for failover clusters this section you have to do this on every node. You can do this remote if you want. Or run the script on the other node and abort it on the input section.

 

#Importing Microsoft`s PowerShell-modules
Write-Host "Install System Modules" -ForegroundColor yellow
ImportSystemModules
#Add-WindowsFeature
Write-Host "Add Failover Clustering" -ForegroundColor yellow
Add-WindowsFeature Failover-Clustering
#Importing Microsoft`s PowerShell-module for administering NLB Clusters
Write-Host "Install ServerManager Modules" -ForegroundColor yellow
Import-Module ServerManager

Here we put the cluster names , netbios, clustername, IP etc.

#Variables for creating the new cluster
Write-Host "Cluster Properties Hostname / Node Names" -ForegroundColor yellow
$Clusternode1 = Read-Host "Enter ClusterNode 1 for the new cluster"
$Clusternode2 = Read-Host "Enter ClusterNode 2 for the new cluster"
$ClusterFqdn = Read-Host "Enter Cluster for the new cluster"
$ClusterIP = Read-Host "Enter cluster primary IP"
#Clear old Cluster info
Write-Host "Old Cluster Configuration Will Be ereased just to make sure" -ForegroundColor yellow
Clear-ClusterNode $Clusternode1 -force
Clear-ClusterNode $Clusternode2 -force

#Validating new cluster
Write-Host "Validate Windows 2008 R2 Cluster…" -ForegroundColor yellow
Test-Cluster $Clusternode1 -ignore network,inventory,storage

#Creating new cluster
Write-Host "Create Windows 2008 R2 Cluster…" -ForegroundColor yellow
New-Cluster -Node "$Clusternode1" -Name $ClusterFqdn -NoStorage -StaticAddress "$ClusterIP"

If you have multiple disks and you don’t know what is cluster disk 4 or 6 or what disk should be used for the Quorum disk ? Well I did make a selection that shows only the smallest disk that are available

#Show Cluster Disk Available
Write-Host "Show Cluster Disk Available…" -ForegroundColor yellow
Get-ClusterAvailableDisk
#Show Wittness Disk Capable
Write-Host "Show Wittness disk for Cluster Available…" -ForegroundColor yellow
Get-ClusterAvailableDisk | ?{ $_.Size -lt 1573741824}

Sure You can change this for not to put in “cluster disk 1” but use only the disk number.

# Place the Wittness disk
Write-Host "Choose a Wittness disk for the Windows 2008 R2 Cluster… Must be "Cluster Disk # "" -ForegroundColor yellow
$ClusterQuorumdisk = Read-Host "Enter Wittness disk Cluster Disk number"

# Add disks to the Cluster
Write-Host "Add disks to Windows 2008 R2 Cluster…" -ForegroundColor yellow
Get-ClusterAvailableDisk | Add-ClusterDisk

Here Is the mounting off the cluster disk and I put a sleep in it this way I make sure the disk is online

#Show Wittness Disk Capable
Write-Host "Show Wittness disk for Cluster Available…" -ForegroundColor yellow
Get-ClusterAvailableDisk | ?{ $_.Size -lt 1573741824}
Start-Sleep -Seconds 5
# Change the quorum model
Write-Host "Change the Quorum model Windows 2008 R2 Cluster…" -ForegroundColor yellow
Set-ClusterQuorum -NodeAndDiskMajority $ClusterQuorumdisk

The Second node is added If you have a four node cluster just add them here

Add-Clusternode $Clusternode2 ,$Clusternode3 , $Clusternode4

But you must also use the input section above

$Clusternode3 = Read-Host "Enter ClusterNode 3 for the new cluster"

$Clusternode4 = Read-Host "Enter ClusterNode 4 for the new cluster"

 

 

# Add Cluster node
Write-Host "Add Cluster node to Windows 2008 R2 Cluster…" -ForegroundColor yellow
Add-Clusternode $Clusternode2

You can find the Scripts Here : Powershell Scripts

Powershell Create Cluster 

Teched 2010 Berlin #TEE10 #Teched

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