Google Cloud Professional Cloud Security Engineer Practice Exam

When creating the CI/CD pipelines, why is it important to run them in separate namespaces?

1. To improve performance of deployments

2. To isolate resources and manage permissions better

3. To allow for easier monitoring of costs

4. To eliminate the need for service accounts

The correct answer is: To isolate resources and manage permissions better

Running CI/CD pipelines in separate namespaces is crucial primarily for isolating resources and managing permissions more effectively. Namespaces in Kubernetes provide a mechanism for isolating groups of resources within the cluster, which means that each CI/CD pipeline can have its own set of resources, such as deployments, services, and configurations, without interfering with others. This isolation ensures that one pipeline's activities do not adversely affect another's, which is particularly important in environments where multiple teams or projects operate concurrently. By managing permissions at the namespace level, organizations can enforce security boundaries between different CI/CD processes. This allows for more granular control over who or what can interact with each namespace, significantly enhancing security by limiting access to only those users or services that require it for their job functions. Groups can be assigned specific roles with permissions tailored to their needs, ensuring compliance with the principle of least privilege. While performance, cost monitoring, and service account management are important aspects of CI/CD pipelines, the primary justification for using separate namespaces lies in the enhanced resource management and security they provide.