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Introduction

Cluster managers run on a set of nodes and manage a cluster. It works with cluster agents who handle the complete cluster, including placing and managing containers or virtual machines on servers. The challenging task for cluster managers is to allocate resources in data centers efficiently. The capacity reservation allows us to reserve computing instances in advance to be used during critical events such as unscheduled maintenance, disaster recovery, or unusual workload incorporation.

Recent approaches are unable to provide guaranteed capacity dynamically during critical events, especially large-scale failures.

Challenges in resource management

Various challenges arise to resource allocation due to the capacity scale, complexities of datacenters, and varying workload characteristics while providing guaranteed capacity within a region.

The following sections discuss the impacts of hardware heterogeneity, diverse capacity requests, and server unavailability events on services and capacity allocation.

Hardware heterogeneity

Different generations of servers, different hardware configurations, and notable differences in performance lead to hardware heterogeneity ...