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Showing content from https://github.com/Flux159/mcp-server-kubernetes/issues/148 below:

Implement Environment Variable Kubeconfig Support · Issue #148 · Flux159/mcp-server-kubernetes · GitHub

The mcp-server-kubernetes currently loads kubeconfig from either an in-cluster service account or the default ~/.kube/config file. This limits its usability in environments where file creation is restricted or impractical, such as serverless platforms, containers, and CI/CD pipelines.

This issue proposes adding support for configuring Kubernetes access via environment variables to enable file-less deployment scenarios.

Implement environment variable support for kubeconfig in mcp-server-kubernetes, maintaining backward compatibility with existing methods.

Modify the KubernetesManager constructor in frontend/vendor/mcp-server-kubernetes/src/utils/kubernetes-manager.ts to load kubeconfig information in the following priority:

1. In-cluster service account (existing)
2. KUBECONFIG_DATA: Full kubeconfig as a YAML string.
3. KUBECONFIG_JSON: Full kubeconfig as a JSON string.
4. K8S_SERVER + K8S_TOKEN: Minimal configuration with individual variables (K8S_SKIP_TLS_VERIFY optional).
5. Default file (~/.kube/config) (existing fallback)

• Enables deployment in serverless and containerized environments.
• Facilitates CI/CD pipeline integration.
• Allows for easier integration with secret management systems.
• Avoids the need for temporary file creation.

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