Kubernetes - Advanced Deployment Patterns
A canary deployment YAML has this snippet:
replicas: 0. What issue will this cause?A canary deployment YAML has this snippet: replicas: 0. What issue will this cause?
medium📝 Troubleshoot Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Understand replicas: 0 meaning
Setting replicas to zero means no pods are created for that deployment.Step 2: Effect on traffic
No canary pods means no traffic can be routed to canary version.Final Answer:
No canary pods will be created, so no traffic goes to canary -> Option BQuick Check:
Zero replicas = no pods = no traffic [OK]
Quick Trick: Zero replicas means no pods run [OK]
Common Mistakes:
- Thinking zero replicas causes failure
- Assuming traffic auto-routes to canary
- Confusing pod readiness with pod existence
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