Kubernetes - Namespaces
In Kubernetes, what must be done to enable a pod in namespace
alpha to successfully send requests to a service in namespace beta?In Kubernetes, what must be done to enable a pod in namespace alpha to successfully send requests to a service in namespace beta?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Kubernetes DNS resolution
Services in different namespaces require fully qualified domain names (FQDN) to be accessed cross-namespace.Step 2: Use the correct DNS format
The format isservice.namespace.svc.cluster.local, which includes the target service's namespace.Final Answer:
Use the full DNS name including the target service's namespace -> Option AQuick Check:
Cross-namespace service access requires full DNS name [OK]
Quick Trick: Always use full DNS names for cross-namespace service access [OK]
Common Mistakes:
- Assuming service name alone works across namespaces
- Using host networking to bypass namespace isolation
- Creating duplicate pods or services in multiple namespaces
Master "Namespaces" in Kubernetes
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