Rebooting or halting a hung node within clustered computer environment

A system, comprising:

• a processor;
• and
• a memory, wherein the memory includes a computer program product configured to perform operations for rebooting or halting a hung logical partition within a logical partition cluster, the operations comprising:
• maintaining a health monitor timer for a logical partition in a logical partition cluster, wherein the health monitor timer runs within a hypervisor associated with the logical partition;
• periodically sending, from the logical partition to the hypervisor, a timer reset to reset the health monitor timer;
• identifying, by the hypervisor, a hung logical partition after a timeout interval without receiving the timer reset from the logical partition;
• and
• resetting the hung logical partition based on a configured tunable command of a reset type.

A computer program product for rebooting or halting a hung logical partition within a logical partition cluster, the computer program product comprising:

• a computer-readable storage medium having computer-readable program code embodied therewith, the computer-readable program code executable by one or more computer processors to perform an operation comprising:
• maintaining a health monitor timer for a logical partition in a logical partition cluster, wherein the health monitor timer runs within a hypervisor associated with the logical partition;
• periodically sending, from the logical partition to the hypervisor, a timer reset to reset the health monitor timer;
• identifying, by the hypervisor, a hung logical partition after a timeout interval without receiving the timer reset from the logical partition;
• and
• resetting the hung logical partition based on a configured tunable command of a reset type.