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Commit aa50820d authored by beorn7's avatar beorn7
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Clarifying regex anchoring

parent 86887067
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content/docs/operating/configuration.md
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...@@ -742,9 +742,10 @@ prefix is guaranteed to never be used by Prometheus itself. ...@@ -742,9 +742,10 @@ prefix is guaranteed to never be used by Prometheus itself.
[ action: <relabel_action> | default = replace ] [ action: <relabel_action> | default = replace ]
``` ```
`<regex>` is any valid [RE2 regular `<regex>` is any valid
expression](https://github.com/google/re2/wiki/Syntax). It is required for [RE2 regular expression](https://github.com/google/re2/wiki/Syntax). It is
the `replace`, `keep`, `drop` and `labelmap` actions. The regex is fully anchored. required for the `replace`, `keep`, `drop` and `labelmap` actions. The regex is
anchored on both ends. To un-anchor the regex, use `.*<regex>.*`.
`<relabel_action>` determines the relabeling action to take: `<relabel_action>` determines the relabeling action to take:
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