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Update ALERTS docs for 2.0 staleness changes. (#4116)

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Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>
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Brian Brazil 2018-04-26 12:44:11 +01:00 committed by GitHub
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docs/configuration/alerting_rules.md
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@ -86,9 +86,8 @@ label sets for which each defined alert is currently active.
For pending and firing alerts, Prometheus also stores synthetic time series of
the form `ALERTS{alertname="<alert name>", alertstate="pending|firing", <additional alert labels>}`.
The sample value is set to `1` as long as the alert is in the indicated active
(pending or firing) state, and a single `0` value gets written out when an alert
transitions from active to inactive state. Once inactive, the time series does
not get further updates.
(pending or firing) state, and the series is marked stale when this is no
longer the case.
### Sending alert notifications