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Tech riderRev. 21 Sept 2026

ClusterLoader2

Ch 236.1of 27 Infrastructure Testing Tools
  1. 1Runs onself-hosted
  2. 2CostsNot stated by the maker
  3. 3Deployed checksYes
  4. 4Execution modellocal
  5. 5Cloud supportGoogle Cloud (GCE/GKE), AWS, VMware vSphere
4 lines stated Written from the maker's own pages: github.com
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Overview

ClusterLoader2 is ranked #23 of 27 in infrastructure testing tools on Specifiction. It runs on Self-hosted.

Compared on infrastructure testing tools

Deployed checks
Yesgithub.com
Execution model
localgithub.com
Cloud support
Google Cloud (GCE/GKE), AWS, VMware vSpheregithub.com

Facts

Purpose
ClusterLoader2 is a Kubernetes load-testing tool and the official Kubernetes scalability and performance testing framework.github.com · 4 Oct 2026
Test format
Tests use YAML in a semi-declarative format to define desired cluster states, how quickly to reach them, and which performance characteristics to measure.github.com · 4 Oct 2026
Observability
ClusterLoader2 provides extra cluster observability during tests with Prometheus.github.com · 4 Oct 2026
Provider options
The required provider flag accepts gce, gke, kind, kubemark, aws, local, vsphere, or skeleton.github.com · 4 Oct 2026
Test configuration
Test definitions can be written in JSON or YAML and support templating.github.com · 4 Oct 2026
Reusable modules
The Module API lets users split test configurations into parameterized modules that can be reused by tests or other modules.github.com · 4 Oct 2026
Measurements
Available measurements include API availability and responsiveness, CPU and memory profiles, etcd and scheduler metrics, pod startup latency, and resource usage summaries.github.com · 4 Oct 2026
Prometheus integration
ClusterLoader2 can scrape pod metrics using ServiceMonitor or PodMonitor.github.com · 4 Oct 2026
Prometheus requirement
API responsiveness measurements are skipped when a Prometheus server is unavailable.github.com · 4 Oct 2026
Cluster access
Running a test requires paths to a kubeconfig file and test configuration, plus a cluster provider.github.com · 4 Oct 2026
Getting started
The getting-started guide walks through setting up the repository, creating a Kind cluster, writing a simple test, and running it.github.com · 4 Oct 2026
License
The repository identifies its license as Apache-2.0.github.com · 4 Oct 2026
Intended users
The repository says it stores Kubernetes-related performance testing tools and invites users to contact the owners to add a load test, benchmark, framework, or other tool.github.com · 4 Oct 2026

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Sources