Cluster Node Selection Using Off-Band Health Metrics

The patent segments metrics collection into two distinct bands: on-band metrics (collected through standard OS-level interfaces) and off-band metrics (collected through dedicated hardware management controllers). This segmentation allows the system to gather comprehensive node health information without overwhelming the control plane, as each band operates through its own established protocols and interfaces.

The patent introduces an intermediary component that aggregates and processes metrics from both on-band and off-band sources. This intermediary synthesizes the raw data into a unified node health score, simplifying the decision-making process while maintaining comprehensive assessment capabilities. The intermediary acts as a buffer between the complex metrics collection infrastructure and the node selection logic.

The patent implements preliminary action by pre-collecting and caching off-band metrics from hardware management controllers before node selection is needed. These metrics are gathered in advance and stored in a readily accessible format, so when a node selection decision is required, the system can quickly retrieve pre-processes data without initiating time-consuming collection operations at the moment of decision-making.

The patent transforms multiple diverse metrics from different sources into a standardized parameter format with uniform data types and scales. By normalizing metrics into consistent parameters, the system enables efficient comparison and aggregation operations, reducing the computational time required to assess node health while maintaining comprehensive evaluation precision.