Sveltos is a Kubernetes add-on controller for deploying and managing resources, Helm charts, and Kustomize overlays across a fleet of workload clusters from a single management cluster. It sits one level above tools like Argo CD and Flux by treating “where to deploy” as a first-class selector problem rather than a per-cluster configuration step.
A user creates a ClusterProfile or Profile that lists the Helm charts, raw manifests, Kustomize references, or Carvel packages to install, plus a label selector that matches target clusters. Sveltos then reconciles the selected add-ons onto any cluster whose labels match, continuously, so new clusters that join the fleet inherit the right add-ons automatically and clusters that drift get repaired. It supports templating based on the target cluster’s metadata, cross-cluster event-driven deployment (deploy to cluster B when something happens in cluster A), drift detection, and techniques like rolling upgrades across clusters.
Sveltos integrates with Cluster API for provisioning, uses Sveltos Agent on each workload cluster as the enforcement point, and is commonly paired with Rancher, EKS Anywhere, or Cluster API-based fleet management where per-cluster GitOps repositories become unmanageable.