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How do you configure the rule evaluation interval in Prometheus?
Correct Answer: A
Prometheus evaluates alerting and recording rules at a regular cadence determined by the evaluation_interval setting. This can be defined globally in the main Prometheus configuration file (prometheus.yml) under the global: section or overridden for specific rule groups in the rule configuration files. The global evaluation_interval specifies how frequently Prometheus should execute all configured rules, while rule-specific intervals can fine-tune evaluation frequency for individual groups. For instance: global: evaluation_interval: 30s This means Prometheus evaluates rules every 30 seconds unless a rule file specifies otherwise. This parameter is distinct from scrape_interval, which governs metric collection frequency from targets. It has no relation to TSDB, service discovery, or command-line flags. Reference: Verified from Prometheus documentation - Configuration File Reference, Rule Evaluation and Recording Rules sections.
