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CV0-003 · Question #739

A systems administrator is troubleshooting an application that is configured to auto-scale with a minimum of two nodes and a maximum of four. The application will scale out if the CPU utilization of o

The correct answer is E. Increase the scale-in rule to 50%.. The current scale-in rule is set to 20%, which means that a node will only be scaled in if the CPU utilization drops below 20%. The administrator should increase this value to 50%, which will mean that a node will be scaled in if the CPU utilization drops below 50%. This will pre

Troubleshooting

Question

A systems administrator is troubleshooting an application that is configured to auto-scale with a minimum of two nodes and a maximum of four. The application will scale out if the CPU utilization of one of the nodes exceeds 80% for more than five minutes and will scale in if the CPU utilization of one of the nodes drops under 20% for more than ten minutes. There is a reverse proxy in front of the application. The systems administrator notices two of the nodes are often running over 80% for a long period of time, which is triggering the creation of the other two nodes; however, they are being created and terminated while the load in the first two remains over 50% all the time. Which of the following should the administrator configure to fix this issue?

Options

  • ADisable DNS caching in the reverse proxy.
  • BReduce the minimum node count to one.
  • CDisable TLS tickets.
  • DReduce the scale-out rule to 50%.
  • EIncrease the scale-in rule to 50%.

How the community answered

(25 responses)
  • A
    4% (1)
  • B
    8% (2)
  • C
    4% (1)
  • D
    20% (5)
  • E
    64% (16)

Explanation

The current scale-in rule is set to 20%, which means that a node will only be scaled in if the CPU utilization drops below 20%. The administrator should increase this value to 50%, which will mean that a node will be scaled in if the CPU utilization drops below 50%. This will prevent the nodes from being created and terminated so frequently.

Topics

#autoscaling rules#scale-in policy#reverse proxy#load distribution

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