RepoMirrors
/
prometheus
mirror of https://github.com/prometheus/prometheus
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

docs: Update federation docs for native histograms 

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
This commit is contained in:
Ganesh Vernekar 2023-01-12 13:33:45 +05:30
parent 7a88bc3581
commit 2e538be5d7
No known key found for this signature in database
GPG Key ID: F056451B52F1DC34
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
docs/federation.md
View File

@ -8,8 +8,15 @@ sort_rank: 6
Federation allows a Prometheus server to scrape selected time series from
another Prometheus server.
_Note about native histograms (experimental feature): Federation does not
support native histograms yet._
_Note about native histograms (experimental feature): To scrape native histograms
via federation, the scraping Prometheus server needs to run with native histograms
enabled (via the command line flag `--enable-feature=native-histograms`), implying
that the protobuf format is used for scraping. Should the federated metrics contain
a mix of different sample types (float64, counter histogram, gauge histogram) for
the same metric name, the federation payload will contain multiple metric families
with the same name (but different types). Technically, this violates the rules of
the protobuf exposition format, but Prometheus is nevertheless able to ingest all
metrics correctly._
## Use cases