Can you explain what Helm is and how Helm Charts work in the context of managing Kubernetes applications?

Helm is a package manager for Kubernetes that simplifies deploying and managing applications in a cluster. Helm Charts are collections of files that describe Kubernetes resources (Deployment, Service, ConfigMap, etc.) as templates with parameters.

When you install a Helm Chart, Helm substitutes parameter values and creates the necessary Kubernetes objects, simplifying repeated and consistent deployment of applications. This is especially useful for complex applications with many components and configurations.

Example usage:

helm install myapp ./mychart --set replicaCount=3

Here, mychart is the directory containing the Chart, and replicaCount is a parameter that sets the number of replicas in the Deployment.