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Design a highly-available solution to collect and query both domain-specific workload metrics and default GKE metrics across multiple clusters in a project while minimizing operational overhead. What is the recommended approach?
A
Use Prometheus operator to install Prometheus in every cluster and scrape the metrics. Configure remote-write to one central Prometheus. Query the central Prometheus instance.
B
Enable managed collection on every GKE cluster. Query the metrics in BigQuery.
C
Use Prometheus operator to install Prometheus in every cluster and scrape the metrics. Ensure that a Thanos sidecar is enabled on every Prometheus instance. Configure Thanos in the central cluster. Query the central Thanos instance.
D
Enable managed collection on every GKE cluster. Query the metrics in Cloud Monitoring.
