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Answer: In Cloud Monitoring, create an alerting policy to notify you if the average memory consumption is outside the defined range.
The correct approach is to use Cloud Monitoring's built-in alerting policies. Cloud Monitoring natively collects metrics from GKE, including container memory usage. Creating an alerting policy (Option B) allows direct configuration of thresholds (below 20% or above 80%) without custom code. Options A, C, and D involve unnecessary complexity, custom scripting, or incorrect metric sources (e.g., OS-level metrics in Option D do not reflect container-specific usage). Cloud Monitoring is the recommended and simplest solution for this use case.
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How can you configure alerts in Google Kubernetes Engine (GKE) to notify your team when the average memory consumption of containers falls below 20% or exceeds 80%?
A
Create a Cloud Function that consumes the Monitoring API. Create a schedule to trigger the Cloud Function hourly and alert you if the average memory consumption is outside the defined range.
B
In Cloud Monitoring, create an alerting policy to notify you if the average memory consumption is outside the defined range.
C
Create a Cloud Function that runs on a schedule, executes kubectl top on all the workloads on the cluster, and sends an email alert if the average memory consumption is outside the defined range.
D
Write a script that pulls the memory consumption of the instance at the OS level and sends an email alert if the average memory consumption is outside the defined range.
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