Kubernetes - Network Policy to Deny All Cross-Namespace Traffic
Particularly important in multi-tenant environments where strong isolation is required
1. Why We Need This Use Case
This use case is crucial for maintaining strict isolation between different operational environments, such as separating production, staging, and development namespaces within a Kubernetes cluster. It ensures that pods in one namespace do not accidentally or maliciously interact with pods in another namespace, enhancing security and minimizing the risk of cross-environment contamination.
2. When We Need This Use Case
Environment Isolation: Particularly important in multi-tenant environments where strong isolation is required between different customer deployments.
Security Enforcement: To prevent potential security breaches that could arise from unauthorized inter-namespace communication.
Operational Integrity: To ensure that testing or development activities do not impact production services or data.
Compliance: In scenarios where regulatory requirements dictate strict data handling and interaction policies across different operational segments.
