Document how to specify multiple excludeMetrics
The documentation mentions multiple patterns can be given by repeating
the `excludeMetrics` setting but it was unclear to me how to proceed.
The setting is fetched using a getStringList() which comes from jgit and
indeed one just need to repeat it. An example makes it clearer.
I also thought the matching was to be done against the metric names
exposed to Prometheus, but it is instead done against the Gerrit metric
name (`/` separated).
The doc mentions the matching is done on the whole key, document that it
is internally using `regex.Matcher.matches()` (and not `lookingAt()`
which matches at the start of the subject). The multiple values
example does use a lead carret '^' which indicates matching at the start
of metric name has to be set explicitly.
Change-Id: I89fd2d4bb6523446ba54f741767336f907c800ac
1 file changed
