kube-bench
A tool to ensure Kubernetes deployments adhere to industry-standard security best practices as outlined in the CIS Kubernetes Benchmark.
Category | Container & Kubernetes Security |
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Community Stars | 7170 |
Last Commit | last week |
Last page update | 19 days ago |
Pricing Details | Free and open-source |
Target Audience | DevOps teams, Kubernetes administrators, security professionals. |
kube-bench is designed to ensure Kubernetes deployments adhere to industry-standard security best practices, specifically those outlined in the CIS Kubernetes Benchmark. This tool runs a series of checks configured via YAML files, making it adaptable to evolving test specifications.
Technically, kube-bench is a Go application that can be executed in various ways, including running inside a Kubernetes pod, directly on a host, or as a job defined by a job.yaml
file. To perform comprehensive checks, it requires access to the host's PID namespace and specific directories where configuration files are stored. This ensures it can inspect running processes and configuration files accurately.
Operationally, kube-bench determines the appropriate test set based on the version of Kubernetes running on the cluster, although there is no one-to-one mapping between Kubernetes releases and CIS benchmark releases. A notable limitation is that it cannot inspect master nodes in managed clusters like GKE, EKS, or AKS, due to lack of access, but it can still check worker node configurations in these environments.
Key technical details include the use of YAML files for test configuration, which allows for easy updates as new benchmarks are released. The tool logs its results, which can be retrieved from the pod's logs if run as a Kubernetes job. However, it is important to note that issues with the CIS Benchmark itself should be reported to the CIS community, while implementation issues with kube-bench should be raised on the GitHub repository.