To complete this procedure, you must supply the following information.
the names and node IDs of all the cluster nodes
the name of the resource group or groups from which you are removing the node
the name of the NAFO group that will host the network resources used by the resource group on all the nodes
Also note the following points.
Be sure to verify that the resource group is not mastered on the node you will remove. If that's not the case, run the scswitch command to take the resource group offline on the node you want to remove.
For failover resource groups, perform all the steps in the procedure "How to Remove a Node from a Resource Group."
For scalable resource groups, you must complete the tasks listed as "For Scalable Resource Groups Only."
For Scalable Resource Groups Only
Remove the node from the list of nodes that can master the scalable resource group (the nodelist resource-group property) (Step 1 in the following procedure).
(Optional) For each network resource that a scalable resource in the resource group uses, update the resource group where the network resource is located to not be mastered on the removed node (Steps 1 through 4 in the following procedure).
(Optional) Update the Load_balancing_weights property of the scalable resource to remove the weight of the node that you want to remove from the resource group. See the scrgadm(1M) man page for more information.
Procedure - How to Remove a Node from a Resource Group
Update the node list to include all the nodes that can now master this resource group.
This step removes the node and overwrites the previous value of nodelist. Be sure to include all the nodes that can master the resource group here.
# scrgadm -c -g resource-group -h nodelist |
Changes a resource group.
Specifies the name of the resource group from which the node is being removed.
Specifies a comma-separated list of nodes that can master this resource group.
Display the current list of NAFO groups that are configured for each resource in the resource group.
# scrgadm -pvv -g resource-group | grep -i netiflist |
The output of the preceding command lines identifies the nodes by node ID.
Update netiflist for network resources that the removal of the node affects.
This step overwrites the previous value of netiflist. Be sure to include all NAFO groups here. Also, you must input nodes to netiflist by node ID. Run scconf -pv | grep "Node ID" to find the node ID.
# scrgadm -c -j network-resource -x netiflist=netiflist |
Changes a network resource.
Specifies the name of the network resource (logical hostname or shared address) that is being hosted on the netiflist entries.
Specifies a comma-separated list that identifies the NAFO groups on each node. Each element in netiflist must be in the form of NAFO-group-name@nodeid.
Verify the updated information.
# scrgadm -pvv -g resource-group | grep -i nodelist # scrgadm -pvv -g resource-group | grep -i netiflist |
This example shows how to remove a node (phys-schost-3) from a resource group (resource-group-1), which contains a logical-hostname resource (schost-1).
# scrgadm -pvv -g resource-group-1 | grep -i nodelist (resource-group-1) Res Group Nodelist: phys-schost-1 phys-schost-2 phys-schost-3 # scrgadm -c -g resource-group-1 -h phys-schost-1,phys-schost-2 # scrgadm -pvv -g resource-group-1 | grep -i netiflist (resource-group-1:schost-1) Res property name: NetIfList(resource-group-1:schost-1:NetIfList) Res property class: extension(resource-group-1:schost-1:NetIfList) List of NAFO interfaces on each node(resource-group-1:schost-1:NetIfList) Res property type: stringarray(resource-group-1:schost-1:NetIfList) Res property value: nafo0@1 nafo0@2 nafo0@3 (nafo0@3 is the NAFO group to be removed.) # scrgadm -c -j schost-1 -x netiflist=nafo0@1,nafo0@2 # scrgadm -pvv -g resource-group-1 | grep -i nodelist (resource-group-1) Res Group Nodelist: phys-schost-1 phys-schost-2 # scrgadm -pvv -g resource-group-1 | grep -i netiflist (resource-group-1:schost-1:NetIfList) Res property value: nafo0@1 nafo0@2 |