{"id":"opsdockerimage-metrics-server-metrics-server","name":"metrics-server-metrics-server","homepage":"https://hub.docker.com/r/opsdockerimage/metrics-server-metrics-server","repo_url":"https://hub.docker.com/r/opsdockerimage/metrics-server-metrics-server","category":"monitoring","subcategories":[],"tags":["kubernetes","metrics","observability","hpa","kubectl-top"],"what_it_does":"metrics-server-metrics-server appears to refer to the Kubernetes metrics-server component, which aggregates resource usage metrics (CPU/memory) from node Kubelets and exposes them via the Kubernetes metrics.k8s.io API so tools like kubectl top and Horizontal Pod Autoscaler can consume them.","use_cases":["Enable kubectl top for cluster nodes/pods","Support Kubernetes Horizontal Pod Autoscaler (HPA) or other autoscaling workflows that rely on metrics.k8s.io","Provide near-real-time CPU/memory usage for dashboards and alerting that consume Kubernetes metrics API"],"not_for":["Storing long-term metrics (use Prometheus/Grafana or similar)","High-resolution time-series analytics","Use as a security boundary or authentication/authorization provider"],"best_when":"You need basic Kubernetes resource metrics (CPU/memory) to power kubectl top and autoscaling, and you can operate a standard Kubernetes add-on within your cluster.","avoid_when":"You require long-term retention, complex metric queries, or guaranteed metric accuracy across all workloads without tuning.","alternatives":["Prometheus + adapter (e.g., prometheus-adapter) for custom/advanced HPA metrics","KEDA (with supported metrics backends) for event-driven autoscaling","Datadog/Elastic APM integrations that expose Kubernetes metrics APIs (where applicable)"],"af_score":41.8,"security_score":65.2,"reliability_score":53.8,"package_type":"mcp_server","discovery_source":["docker_mcp"],"priority":"low","status":"evaluated","version_evaluated":null,"last_evaluated":"2026-04-04T21:24:09.624961+00:00","interface":{"has_rest_api":true,"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 in-cluster authentication (service account / RBAC)","Kubelet authentication as configured in the metrics-server deployment"],"oauth":false,"scopes":false,"notes":"No end-user OAuth-style auth is indicated; access to the metrics API is governed by Kubernetes API access and RBAC. Exact kubelet auth method depends on deployment flags (not provided here)."},"pricing":{"model":null,"free_tier_exists":false,"free_tier_limits":null,"paid_tiers":[],"requires_credit_card":false,"estimated_workload_costs":null,"notes":"Open-source Kubernetes component; operational cost is infrastructure/cluster resources rather than a vendor pricing model."},"requirements":{"requires_signup":false,"requires_credit_card":false,"domain_verification":false,"data_residency":[],"compliance":[],"min_contract":null},"agent_readiness":{"af_score":41.8,"security_score":65.2,"reliability_score":53.8,"mcp_server_quality":0.0,"documentation_accuracy":35.0,"error_message_quality":0.0,"error_message_notes":null,"auth_complexity":55.0,"rate_limit_clarity":20.0,"tls_enforcement":70.0,"auth_strength":65.0,"scope_granularity":50.0,"dependency_hygiene":60.0,"secret_handling":80.0,"security_notes":"Security is primarily inherited from Kubernetes (TLS to API server, RBAC for access) and kubelet configuration. Key risks commonly include over-permissive RBAC, permissive kubelet access flags, and exposure of metrics endpoints within the cluster.","uptime_documented":40.0,"version_stability":70.0,"breaking_changes_history":60.0,"error_recovery":45.0,"idempotency_support":"true","idempotency_notes":"As a Kubernetes add-on, redeployments/rollouts are typically idempotent when using the same manifests, but specific API action idempotency depends on how it is installed/managed.","pagination_style":"none","retry_guidance_documented":false,"known_agent_gotchas":["Metrics-server may fail to report metrics if kubelet TLS/auth configuration does not match the cluster setup","Metrics may be delayed or missing for certain workload types depending on scrape/aggregation behavior","HPA or kubectl top will show errors/timeouts when metrics.k8s.io is unavailable or RBAC is misconfigured"]}}