PCA 免费考试题

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Question 1

Which PromQL expression returns the total of every `node_memory_MemAvailable_bytes` metric value from 10 minutes earlier?

sum(node_memory_MemAvailable_bytes) setoff 10m

offset sum(node_memory_MemAvailable_bytes[10m])

sum(node_memory_MemAvailable_bytes offset 10m)

sum(node_memory_MemAvailable_bytes) offset 10m

Question 2

month(prometheus_tsdb_lowest_timestamp_seconds)

format_date(prometheus_tsdb_lowest_timestamp_seconds,"%M")

(time() - prometheus_tsdb_lowest_timestamp_seconds) / 86400

prometheus_tsdb_lowest_timestamp_seconds % month

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