Solution:Step 1: Understand update-parallelism and delay3 containers update at once, then wait 5 seconds before next batch.Step 2: Calculate update batchesWith 9 containers, updates happen in 3 batches of 3 containers each, with 5 seconds delay between batches.Final Answer:3 containers update every

[Solved] Given this command:docker service update --image myapp:v3 --update-parallelism 3 --update-delay 5s myserviceWhat happens if the service has 9 containers? | Docker

Docker - Production Patterns

Given this command:

docker service update --image myapp:v3 --update-parallelism 3 --update-delay 5s myservice

What happens if the service has 9 containers?

A3 containers update every 5 seconds until all 9 are updated

BAll 9 containers update simultaneously

COnly 3 containers update and the rest stay old

DThe update fails due to invalid parallelism

Step-by-Step Solution

Solution:

Step 1: Understand update-parallelism and delay
3 containers update at once, then wait 5 seconds before next batch.
Step 2: Calculate update batches
With 9 containers, updates happen in 3 batches of 3 containers each, with 5 seconds delay between batches.
Final Answer:
3 containers update every 5 seconds until all 9 are updated -> Option A
Quick Check:
Parallelism 3 + delay 5s = batch updates [OK]

Quick Trick: Parallelism sets batch size, delay sets wait time [OK]

Common Mistakes:

Thinking all update at once
Assuming partial update only
Believing parallelism value is invalid

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Given this command:

Step 1: Understand update-parallelism and delay

Step 2: Calculate update batches

Final Answer:

Quick Check:

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