Polaris by Fairwinds

Open Source Policy Engine for Kubernetes

Validate and remediate Kubernetes resources to ensure configuration best practices are followed.

30+ Built in Policies

Includes 30+ built in configuration policies.

Customizable

Write custom policies using an intuitive JSON syntax.

Automate Fixes

Automatically remediate any issues based on policy criteria.

Kubernetes Policy Management

Ensure configuration best practices are followed.

Security

Your Kubernetes security goal should be to ensure containers are running with minimal privileges - avoiding privilege escalation, not running containers with a root user, and using read only file systems wherever possible.

Where configuration is available at both a pod and container level, Polaris validates both.

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Reliability

Readiness and liveness probes can help maintain the health of applications running inside Kubernetes. By default, Kubernetes only knows whether or not a process is running, not if it's healthy. Properly configured readiness and liveness probes ensure the health of an application.

Polaris validates the presence of readiness and liveness probes in pods.

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Networking

Although Kubernetes allows you to deploy a pod with access to the host network namespace, it's rarely a good idea. Polaris checks hostNetwork and hostPort so you can ensure your pods aren’t asking for excessive permissions.

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Efficiency

Configuring resource requests and limits for containers is an important Kubernetes best practice. Setting appropriate resource requests will ensure that all your applications have sufficient compute resources, and limits will keep them from consuming too many resources.

Polaris runs checks to ensure CPU and Memory requests and limits are in place.

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Images

Docker's latest tag is applied by default to images where a tag hasn't been specified. Not specifying a specific version of an image can lead to a wide variety of problems, including breaking your application.

Polaris will identify when an image tag is either not specified or latest and when an image pull policy is not Always.

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Operationalize Polaris with Fairwinds Insights

Fairwinds has combined Polaris with other trusted open source tools, toolchain integrations, and SRE expertise based on hundreds of successful Kubernetes deployments to deliver Fairwinds Insights, a configuration validation platform.

Fairwinds Insights operationalizes Polaris checks by providing not only the findings, but also keeping a historical record of the results across all your clusters and offering remediation guidance. Fairwinds Insights allows you to track and prioritize security, efficiency and reliability issues, collaborate across teams, and apply best practices as applications move from development to production. Fairwinds Insights will help you improve your security posture, reduce costs, save time and improve workload reliability.

Learn more about Fairwinds Insights.