Boot Nodes

The ICE ClusterWare ™ system boots nodes according to Boot Configurations and boot styles. Every node should have one and only one boot configuration assigned to the _boot_config attribute.

For example, to boot a node using a boot configuration called "SlurmBoot", run the following command:

cw-nodectl -in10 set _boot_config=SlurmBoot

By default, all nodes inherit the DefaultBoot configuration from the DefaultAttribs attribute group. To change default boot configuration across the cluster, set the _boot_config attribute in the DefaultAttribs group with the following command:

cw-attribctl set _boot_config=SlurmBoot

While the boot configuration controls what a node boots, boot styles control how a node boots. A node's boot style is controlled using the _boot_style reserved attribute. See Node Boot Style for details.

Like all node attributes, _boot_config and _boot_style can be specified in attribute groups and then nodes can be assigned to those attribute groups. For details about attribute groups, see Attribute Groups. See Reserved Attributes for a list of all available reserved attributes, including _boot_config and _boot_style.