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TargetDown
Paweł Krupa edited this page Jul 1, 2021
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The alert means that one or more prometheus scrape targets are down. It fires when at least 10% of scrape targets in a Service are unreachable.
Metrics from a particular target cannot be scraped as such there is no data for this target in Prometheus and alerting can be hindered.
/targets page in Prometheus UI can be used to check the scrape error for the particular target.
up == 0 query can be used to check the trend over time.
Mitigation depends on the error reported by prometheus and there is no generic one.
This wiki is DEPRECATED, all alerts were moved to https://github.com/prometheus-operator/runbooks and are available via https://runbooks.prometheus-operator.dev/ website.