Exam Professional Cloud DevOps Engineer topic 1 question 148 discussion

Answer A seems to be correct.

C Ref: https://sre.google/sre-book/effective-troubleshooting/

Choosing option A. First, communicating your intent to the incident team ensures transparency and collaboration. Performing a load analysis is crucial to determine if the remaining nodes can handle the increased traffic after offloading from the unhealthy node. Scaling appropriately is essential to maintain the overall capacity. Once new nodes report as healthy, draining traffic from the unhealthy node ensures a gradual transition without disrupting user experience. Removing the unhealthy node from service comes after ensuring that the other nodes can handle the load effectively. This step-by-step approach, coupled with communication and load analysis, aligns with Google-recommended practices for incident response and minimizes the impact on users during the investigation and resolution process.

Vote A

Option A and option B do not add a new node to the pool to handle the increased load, which may leave the remaining nodes overburdened and unable to handle the traffic adequately. Option C starts with draining traffic from the unhealthy node, which is a good step, but it doesn't immediately add a new node to the pool to handle the load. It also lacks the step of explicitly communicating the actions to the incident team.

The service usually run 70% of the capacity, hence even one node is out of order you'd always want to see if the rest of the computing resource are enough to support the stress before arbitrarily adding any new nodes.