How to change cluster IP address or move the default cluster group in Windows Server 2008 [updated]

[update from John Toner: apparently you can do this in the UI, its just hidden. here is the info from John to do it through GUI: “If you click on the cluster name in the left pane, in the center pane near the bottom will show “Cluster Core Resources”. If you click the little down arrow to the left, it will expand to show you the contents of the “Cluster Group” in the GUI. if you’d prefer to make the change through the GUI, you can modify the IP address of the cluster here.” If you want to do it from cmd line below procedure will work]

Recently I faced a typical admin problem: change the IP address in Windows Server 2008 cluster. In WS2003 it was possible from cluadmin UI interface. This time I spent half an hour looking through the UI but could not find such an option (I provided the IP on creation of the cluster and from then on it seems gone from UI). so the option is to use cluster.exe:

c:\cluster res
Listing status for all available resources:

Resource             Group                Node            Status
——————– ——————– ————— ——
Cluster Disk 1       Cluster Group        HV1DC2          Online
Cluster Disk 2       SCVMM WS08_1 Resources HV1DC1          Online
Cluster IP Address   Cluster Group        HV1DC2          Online
Cluster Name         Cluster Group        HV1DC2          Online
SCVMM WS08_1         SCVMM WS08_1 Resources HV1DC1          Offline
SCVMM WS08_1 Configuration SCVMM WS08_1 Resources HV1DC1          Online

c:\cluster res "Cluster IP Address" /priv

Listing private properties for ‘Cluster IP Address’:
T  Resource             Name                           Value
– ——————– —————————— ———————–
FTR Cluster IP Address   LeaseObtainedTime              1601-01-01 01:00:00
FTR Cluster IP Address   LeaseExpiresTime               1601-01-01 01:00:00
SR Cluster IP Address   DhcpServer                     255.255.255.255
SR Cluster IP Address   DhcpAddress                    0.0.0.0
SR Cluster IP Address   DhcpSubnetMask                 255.0.0.0
S  Cluster IP Address   Network                        Cluster Network 1
S  Cluster IP Address   Address                        172.0.30.102
S  Cluster IP Address   SubnetMask                     255.255.0.0
D  Cluster IP Address   EnableNetBIOS                  2 (0×2)
D  Cluster IP Address   OverrideAddressMatch           0 (0×0)
D  Cluster IP Address   EnableDhcp                     0 (0×0)

c:\cluster res "Cluster IP Address" /priv address=172.0.30.101

With cluster.exe you can see the cluster groups and resources that normally are not exposed in the Failover Cluster Management UI.

The other option you might find useful is moving the default cluster group to another node (e.g. a simple patch Tuesday scenario):

c:\cluster group

Listing status for all available resource groups:
Group                Node            Status
——————– ————— ——
Available Storage    HV1DC2          Offline
Cluster Group        HV1DC2          Online
SCVMM WS08_1 Resources HV1DC1          Offline

c:\cluster group "Cluster Group" /Move:hv1dc1

Moving resource group ‘Cluster Group’…
Group                Node            Status
——————– ————— ——
Cluster Group        HV1DC1          Online

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~ by alipka on December 17, 2008.

11 Responses to “How to change cluster IP address or move the default cluster group in Windows Server 2008 [updated]”

  1. I fixed mine via your post. Thanks for the info. I did find in the GUI where it was at eventually while I was troubleshooting something else. If I expanded the “Services and Applications” leaf, the virtual cluster interface was listed under there as a resource of my Application Group that I had created. Under that was the IP interface. So it was buried. Now if I did not have an application group created, I don’t think it would have been listed at all. Seems like pretty odd design to me.

  2. This is a nice article and I did not find the information somewhere else.

    Is it also possible to have the cluster itself listening on more than one IP? For instance we would like the cluster to have a DNS alias with a secondary IP on a second VLAN.

  3. I guess the easiest way would be to simply add another IP address in a new cluster group. Otherwise you can try using cluter.exe to add a secondary IP address in the default cluster group (though I have not tried it and don’t know if its fully supported). I will test it out as soon as can connect to the lab and will post the result.

  4. [...] Zmiana adresu IP klastra Windows 2008 [...]

  5. FYI, you can still make this change in the Cluster GUI…it’s just not as obvious in 2008. If you click on the cluster name in the left pane, in the center pane near the bottom will show “Cluster Core Resources”. If you click the little down arrow to the left, it will expand to show you the contents of the “Cluster Group” in the GUI. if you’d prefer to make the change through the GUI, you can modify the IP address of the cluster here. Enjoy!

  6. Gah! How difficult can MS make this inane task!?! Isn’t this a fundamental parameter of the cluster? Sheesh!

    John Toner’s post worked for me.

  7. This post was really helpfull. I have chnaged the nework of my SQL cluster.

    Jason

  8. DNS Port…

    [...]How to change cluster IP address or move the default cluster group in Windows Server 2008 [updated] « Andrzej’s Weblog[...]…

  9. Just to ask anyone knows a way to see the default core groups in UI. Till now the only way to see the “Cluster group” and “Available Storage” is through cmd.

  10. I have my cluster running on public ip. due to some security concerns i need to move it into private network..i tries using the commands above with variations. the subnet and ip got changed but the cluster name could not be brought online.
    please help.

  11. Nice Link !
    Can you Update how to change Subnet of both Cluster Nodes…?

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