Implementing Leader Election in Golang using Kubernetes API

Introduction Leader election is a crucial pattern in distributed systems where multiple instances or nodes compete to perform certain tasks. In a Kubernetes cluster, leader election can be used to ensure that only one instance is responsible for executing leader-specific tasks at any given time. This blog post will explore how to implement a leader election mechanism in Kubernetes using lease locks. Overview The leader election mechanism implemented in Go code relies on Kubernetes coordination features, specifically Lease object in the coordination.k8s.io API Group. Lease locks provide a way to acquire a lease on a shared resource, which can be used to determine the leader among a group of nodes.