Using Resource Groups to Allocate Related Resources to NIM Machines

NIM resource groups allow association of resources so they can be allocated as a logical unit to machines prior to other NIM operations. Resource groups can only contain one of each resource type, except for script and installp_bundle resources, which may occur multiple times in a given resource group.

Resource groups are not currently supported in the Web-based System Manager application.

Defining a Resource Group

From SMIT

1. To define a resource group, enter the smit nim_mkgrp_resource fast path.
2. Enter the name of the group with member information.

From the Command Line

To define a resource group, enter:

nim -o define -t res_group -a ResourceType=ResourceName GroupName

As an example, to create a resource group named ResGrp1 containing previously defined resources, images1 , spot1 , bosinst_data1 , and bundle1 , enter:

nim -o define -t res_group -a lpp_source=images1 -a spot=spot1 \
-a bosinst_data=bosinst_data1 -a installp_bundle=bundle1 \
-a comments="BOS Install Resources" ResGrp1

Allocating a Resource Group

From SMIT

1. To allocate a resource group, enter the smit nim_alloc fast path.
2. Select the machine or machine group from the list of defined machines (for example, Standalone1 ).
3. A list of resource groups is displayed. Select the resource group you want to allocate.

From the Command Line

To allocate a resource group, enter:

nim -o allocate -a group=ResGroupName TargetName

For example, to allocate a resource group named ResGrp1 to a machine named Standalone1 , enter:

nim -o allocate -a group=ResGrp1 Standalone1

Alternatively, the group resource can be specified on the command line to the operation. For example, to allocate the resource group, ddResGrp , while performing the dkls_init operation on a group of diskless machines named DklsMacs , enter:

nim -o dkls_init -a group=ddResGrp DklsMacs

Defining Default Resource Groups

After a resource group is defined, you may want to specify the group as the set of defaults for all operations that require resources. Set the default_res attribute on the master to the name of the resource group that you want to be the default.

From SMIT

1. To define default resource groups, enter the smit nim_grp fast path.
2. Choose Select/Unselect a Default Resource Group.
3. Fill in the name of the group that is to act as the default.

From the Command Line

To define default resource groups, enter:

nim -o change -a default_res=ResGroupName master

For example, if the resource group, ResGrp1 , should be the set of default resources for all NIM operations, enter:

nim -o change -a default_res=ResGrp1 master

Note: All applicable resources are allocated from the group specified as the default for all operations, except for installp_bundle for a maint operation.

A resource from the default group will only be allocated if a resource of the same type is not already allocated and if a resource of that type is not specified on the command line for automatic allocation. The exceptions are the script and installp_bundle resources, of which all occurrences in the resource group and specified on the command line will be allocated.

Default members can be overridden by specifying a null value in the attribute assignment for that resource.

The following bos_inst operation allocates all applicable bos_inst resources from the resource group specified as the default, except for the bosinst_data resource:

nim -o bos_inst -a bosinst_data= Standalone1