A customizable linter for validating Kubernetes resources against organization-defined standards.
kube-lint is a customizable linter for Kubernetes resources that validates configuration files and running resources against user-defined rules. It solves the problem of enforcing organizational standards in Kubernetes deployments, such as mandatory labels or restricted service types. The tool helps prevent non-compliant resources from being deployed and enables auditing of existing cluster resources.
DevOps engineers, platform teams, and Kubernetes administrators who need to enforce consistency and security policies across their clusters. It's particularly useful for organizations with multiple teams deploying to shared Kubernetes environments.
Developers choose kube-lint for its flexible, customizable rule system that allows organizations to define their own validation standards rather than being limited to predefined rules. Its ability to validate both configuration files and running resources makes it versatile for both CI/CD gating and cluster auditing.
A linter for Kubernetes resources with a customizable rule set
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Allows defining validation rules using YAML configuration with JSONPath field selection, enabling organizations to enforce their own standards rather than relying on defaults.
Supports running subsets of rules by filtering based on tags like 'security' or 'operations,' which is useful for targeted audits and CI/CD gating, as shown in the README examples.
Implements support for string, boolean, and numeric value types with operators like equal, set, and greaterthan, allowing for diverse validation scenarios based on the rule configuration.
Can evaluate resources only from specific Kubernetes namespaces via the --namespace flag, aiding in focused validation efforts for cluster auditing.
The project is explicitly labeled as a prototype with only Pod linting implemented, panic handling instead of proper errors, and no tests, making it unsuitable for production use.
Currently, it only validates Pod resources, as stated in the README, which severely restricts its usefulness for comprehensive cluster audits or multi-resource deployments.
Requires users to define rules in YAML with JSONPath, which might have a steep learning curve for teams not familiar with these technologies, and lacks pre-defined rule sets.