Cluster Configuration BUI Page

The Configuration->Cluster view provides a graphical overview of the status of the cluster card, the cluster head node states, and all of the resources.

Figure 10-13  Configuration Cluster View

The interface contains the following objects:

• A thumbnail picture of each system, with the system whose administrative interface is being accessed shown at left. Each thumbnail is labeled with the canonical appliance name, and its current cluster state (the icon above, and a descriptive label).

• A thumbnail of each cluster card connection that dynamically updates with the hardware: a solid line connects a link when that link is connected and active, and the line disappears if that connection is broken or while the other system is restarting/rebooting.

• A list of the PRIVATE and SINGLETON resources (see Introduction, above) currently assigned to each system, shown in lists below the thumbnail of each cluster node, along with various attributes of the resources.

• For each resource, the appliance to which that resource is assigned (that is, the appliance that will provide the resource when both are in the CLUSTERED state). When the current appliance is in the OWNER state, the owner field is shown as a pop-up menu that can be edited and then committed by clicking Apply.

• For each resource, a lock icon indicating whether or not the resource is PRIVATE. When the current appliance is in either of the OWNER or CLUSTERED states, a resource can be locked to it (made PRIVATE) or unlocked (made a SINGLETON) by clicking the lock icon and then clicking Apply. Note that PRIVATE resources belonging to the remote peer will not be displayed on either resource list.

The BUI contains the following buttons:

Table 10-6  Shelf Cabling Interface Buttons

Button Description Setup If the cluster is not yet configured, execute the cluster setup guided task, and then return to the current screen. See above for a detailed description of this task. Unconfig Upgrade a node to standalone operation by unconfiguring the cluster. See below for a detailed description of this task. Apply If resource modifications are pending (rows highlighted in yellow), commit those changes to the cluster. Revert If resource modifications are pending (rows highlighted in yellow), revert those changes and show the current cluster configuration. Failback If the current appliance (left-hand side) is the OWNER, fail-back resources owned by the other appliance to it, leaving both nodes in the CLUSTERED state (active/active). Takeover If the current appliance (left-hand side) is either CLUSTERED or STRIPPED, force the other appliance to reboot, and take-over its resources, making the current appliance the OWNER