Kubernetes - Service Mesh
What will be the output of the following command when run in a Kubernetes cluster with Istio installed?
kubectl get svc -n istio-system -l app=prometheus
What will be the output of the following command when run in a Kubernetes cluster with Istio installed?
medium📝 Command Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the command components
The command lists services in the 'istio-system' namespace filtered by label 'app=prometheus'.Step 2: Interpret expected output
If Prometheus is installed by Istio, the service with label 'app=prometheus' will be listed with details like cluster IP and ports.Final Answer:
Lists Prometheus service details in the istio-system namespace -> Option AQuick Check:
kubectl get svc with label selector lists matching services [OK]
Quick Trick: Label selectors filter resources by labels in kubectl [OK]
Common Mistakes:
- Confusing namespace scope with all namespaces
- Misunderstanding label selector syntax
- Assuming Prometheus is not installed by default
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