{"id":"rancher-hardened-k8s-metrics-server","name":"hardened-k8s-metrics-server","homepage":"https://hub.docker.com/r/rancher/hardened-k8s-metrics-server","repo_url":"https://hub.docker.com/r/rancher/hardened-k8s-metrics-server","category":"infrastructure","subcategories":[],"tags":["kubernetes","metrics-server","observability","autoscaling","security","infrastructure"],"what_it_does":"hardned-k8s-metrics-server is a Kubernetes metrics-server component intended to serve Kubernetes metrics (typically for kubectl top and autoscaling) while being configured with “hardened” security defaults/policies compared to the upstream metrics-server.","use_cases":["kubectl top / HPA/VPA workflows that depend on Kubernetes Metrics API","clusters where you want a more security-conscious deployment of metrics-server (RBAC hardening, TLS/auth hardening, restricted permissions)"],"not_for":["production environments where you require a fully managed metrics pipeline from a hosted provider (this is self-deployed infrastructure)","edge cases requiring non-standard metrics sources (it’s meant for the Kubernetes resource metrics API)"],"best_when":"You need Kubernetes metrics-server and want hardened deployment defaults for reduced attack surface within your cluster.","avoid_when":"You cannot install a cluster-wide component (permissions/control-plane access needed) or you lack the ability to configure cluster networking/TLS/RBAC appropriately.","alternatives":["metrics-server (upstream) deployed with your own hardened settings","kube-prometheus-stack / Prometheus adapter (if you want metrics via Prometheus instead of metrics-server)","cloud provider managed metrics solutions"],"af_score":13.5,"security_score":58.0,"reliability_score":27.5,"package_type":"mcp_server","discovery_source":["docker_mcp"],"priority":"low","status":"evaluated","version_evaluated":null,"last_evaluated":"2026-04-04T21:36:14.461354+00:00","interface":{"has_rest_api":false,"has_graphql":false,"has_grpc":false,"has_mcp_server":false,"mcp_server_url":null,"has_sdk":false,"sdk_languages":[],"openapi_spec_url":null,"webhooks":false},"auth":{"methods":["Kubernetes RBAC (service account)","mTLS/TLS settings for metrics-server/API service (typical metrics-server configuration)"],"oauth":false,"scopes":false,"notes":"As a Kubernetes component, access is governed by Kubernetes authentication/authorization (API aggregation + RBAC). No OAuth flows are implied by the package name; exact details depend on included manifests/config."},"pricing":{"model":null,"free_tier_exists":false,"free_tier_limits":null,"paid_tiers":[],"requires_credit_card":false,"estimated_workload_costs":null,"notes":"Self-hosted open-source style component; no explicit pricing found from the provided metadata/name alone."},"requirements":{"requires_signup":false,"requires_credit_card":false,"domain_verification":false,"data_residency":[],"compliance":[],"min_contract":null},"agent_readiness":{"af_score":13.5,"security_score":58.0,"reliability_score":27.5,"mcp_server_quality":0.0,"documentation_accuracy":20.0,"error_message_quality":0.0,"error_message_notes":null,"auth_complexity":35.0,"rate_limit_clarity":0.0,"tls_enforcement":70.0,"auth_strength":60.0,"scope_granularity":55.0,"dependency_hygiene":40.0,"secret_handling":60.0,"security_notes":"Security is inferred from the repository/package intent (“hardened”), but exact guarantees (RBAC minimization, TLS settings, cert handling, seccomp/non-root, readOnlyRootFilesystem, resource limits, and dependency CVE posture) cannot be verified from the provided information alone.","uptime_documented":0.0,"version_stability":50.0,"breaking_changes_history":30.0,"error_recovery":30.0,"idempotency_support":"false","idempotency_notes":null,"pagination_style":"none","retry_guidance_documented":false,"known_agent_gotchas":["As a cluster component, ‘integration’ is mainly via Kubernetes manifests/helm/operator usage rather than a client API; agents must have cluster access and correct RBAC.","Hardening changes may affect connectivity (TLS/certs), API aggregation, or scraping; failures may look like missing metrics rather than explicit auth errors."]}}