Docker - Swarm
You have a service 'api' currently running 4 replicas. You want to handle a sudden traffic spike by doubling the replicas temporarily. Which command correctly doubles the replicas?
You have a service 'api' currently running 4 replicas. You want to handle a sudden traffic spike by doubling the replicas temporarily. Which command correctly doubles the replicas?
hard📝 Workflow Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Identify current replica count
The service 'api' currently has 4 replicas running.Step 2: Calculate double replicas
Doubling 4 replicas means setting replicas to 8.Step 3: Choose correct scale command
The commanddocker service scale api=8sets replicas to 8, doubling the current count.Final Answer:
docker service scale api=8 -> Option DQuick Check:
Double 4 replicas = 8 [OK]
Quick Trick: Double replicas by setting scale to twice current count [OK]
Common Mistakes:
- Setting replicas to current count instead of double
- Setting replicas to half or quadruple by mistake
- Using wrong syntax for scaling
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