6.3.1 How to Remove a Node From the Cluster Software Configuration

This is the last software configuration procedure that needs to be accomplished in the process for removing a node from a cluster. Before beginning this procedure, you must complete all the prerequisite tasks listed in the "Removing a Cluster Node" task map. When finished with this procedure, remove the hardware connections as described in the Sun Cluster 3.0 Hardware Guide.

1. Become superuser on a node in the cluster.

   ---

   Note -

   Be sure you have placed the node in maintenance state and removed it from all resource groups, device groups, and quorum device configurations before continuing with this procedure.

   ---

2. Determine the boot disks in the cluster.

   # scconf -pvv | grep Local_Disk

3. Identify which boot disks in the cluster are connected to the node being removed.

   # scdidadm -L did-name

4. Remove the localonly flag from each boot disk.

   # scconf -c -D name=devicename,localonly=false

5. Remove the node from all raw disk device groups, of which it is a member.

   This step must be completed for each disk device group.

   # scconf -pvv | grep nodename | grep Device # scconf -r -D name=devicename,nodelist=nodename

6. Remove the node from the cluster.

   # scconf -r -h node=nodename

7. Verify the node removal using scstat.

   # scstat -n

After the device has been removed from the cluster, you must reinstall the Solaris operating environment on the removed host before it can be placed back into service in any capacity.

6.3.1.1 Example--Removing a Cluster Node

This example shows how to remove a node (phys-schost-2) from a cluster.

[Become superuser on any node.]
[Determine the boot disks on the node:]
# scconf -pvv | grep Local_Disk
	(dsk/d4) Device group type:          Local_Disk	(dsk/d3) Device group type:          Local_Disk
# scdidadm -L d4
  ...
  4        phys-schost-2:/dev/rdsk/c1t3d0 /dev/did/rdsk/d4
[Remove the localonly flag:]
# scconf -c -D name=dsk/d4,localonly=false
[Remove the node from all raw disk device groups:]
# scconf -pvv | grep phys-schost-2 | grep Device
	(dsk/d4) Device group node list:  phys-schost-2
	(dsk/d2) Device group node list:  phys-schost-1, phys-schost-2	(dsk/d1) Device group node list:  phys-schost-1, phys-schost-2
# scconf -r -D name=dsk/d4,nodelist=phys-schost-2
# scconf -r -D name=dsk/d2,nodelist=phys-schost-2
# scconf -r -D name=dsk/d1,nodelist=phys-schost-2
[Remove the node from the cluster:]
# scconf -r -h node=phys-schost-2
[Verify node removal:]# scstat -n
 
-- Cluster Nodes --
 
                    Node name           Status
                    ---------           ------
  Cluster node:     phys-schost-1       Online

6.3.1.2 Where to Go From Here

Sun Cluster 3.0 Hardware Guide:

      How to Remove a StorEdge MultiPack Enclosure

      How to Remove a StorEdge D1000 Disk Array

      How to Remove a StorEdge A5x00 Disk Array