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plugin/health: clarify server label (#1707)

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Health overloaded metrics does not carry the server label. Explain why.
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Miek Gieben 2018-04-20 15:03:59 +01:00 • committed by GitHub
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@ -60,6 +60,9 @@ If monitoring is enabled (via the *prometheus* directive) then the following met
be a local operation it should be fast. A (large) increases in this duration indicates the be a local operation it should be fast. A (large) increases in this duration indicates the
CoreDNS process is having trouble keeping up with its query load. CoreDNS process is having trouble keeping up with its query load.
Note that this metric *does not* have a `server` label, because being overloaded is a symptom of
the running process, *not* a specific server.
## Examples ## Examples
Run another health endpoint on http://localhost:8091. Run another health endpoint on http://localhost:8091.