YAML configuration output is not correctly indented

[kaihendry]

Proposal

I'm often terrorised by incorrect YAML indentation and I noticed what Prometheus outputs in /config isn't perfect strictly speaking.

Bug Report

• What I did: Copy the configuration shown on /config

• Expected: A valid YAML document

• What happened instead: yamllint 1.12.1 strictly complain about the document

• Prometheus version: 2.5

https://s.natalian.org/2018-11-09/yaml-indentation.mp4

[brian-brazil]

Is it invalid YAML, or is the linter being over-sensitive?

[simonpasquier]

Though not complying with the linter's rules, the YAML exposed by Prometheus is perfectly valid. There isn't much we can do here as we rely on an external library for YAML serialization/deserialization.