
Fairwinds Polaris
7.1#5 in kubernetes security softwareFree planFree planWebLinuxmacOSSelf-hosted
Visit

| Fact | Fairwinds Polaris | Open Policy Agent Gatekeeper |
|---|---|---|
| Purpose | Polaris is an open source policy engine for Kubernetes that validates and remediates resource configuration. | Gatekeeper is a validating and mutating Kubernetes webhook that enforces CRD-based policies evaluated by Open Policy Agent. |
| Validation | Polaris checks for configuration practices including least privilege, readiness and liveness probes, host network and port use, resource requests and limits, and image tags. | Validation policies can deny, warn, dry-run, audit, or report violations without modifying resources. |
Polaris suits Kubernetes teams that want to validate configuration practices in local YAML files or against a cluster. It is also relevant to teams seeking supported automatic remediation.
Gatekeeper suits teams managing Kubernetes clusters that need policy enforcement, mutation or recurring audits of existing resources. It is self-hosted and requires cluster-admin permissions to install.