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Tweaks to SD README from review

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Brian Brazil 2017-07-17 14:20:54 +01:00
parent 2a9ca394dd
commit 84be97bd98
1 changed files with 5 additions and 3 deletions
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8
discovery/README.md
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@ -47,10 +47,12 @@ file for use with `file_sd`.
The general principle with SD is to extract all the potentially useful
information we can out of the SD, and let the user choose what they need of it
using relabelling. This information is generally termed metadata.
using
[relabelling](https://prometheus.io/docs/operating/configuration/#<relabel_config>).
This information is generally termed metadata.
Metadata is exposed as a set of key/value pairs (labels) per target. The keys
are prefixed with `__meta_sdname_`, and there should also be an `__address__`
are prefixed with `__meta_<sdname>_<key>`, and there should also be an `__address__`
label with the host:port of the target (preferably an IP address to avoid DNS
lookups). No other labelnames should be exposed.
@ -79,7 +81,7 @@ combined.
For machine-like SDs (OpenStack, EC2, Kubernetes to some extent) there may
be multiple network interfaces for a target. Thus far reporting the details
of only the first network interface has sufficed.
of only the first/primary network interface has sufficed.
### Other implementation considerations