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docs: document Prometheus tag/label parsing behaviour #1151

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2 changes: 1 addition & 1 deletion site/content/docs/integrations/prometheus-v2.md
Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ In addition, the check metrics all contain the following labels:
| `tags` | The tags of the check. |

{{<info>}}
You can set `key:value` tags in your checks and groups and they will be exported as custom labels in Prometheus. For instance the tag `env:production` will be exposed as a custome label `env="production"`. You can disable this by adding the query param `disableTagParsing=true`.
You can set `key:value` tags in your checks and groups and they will be exported as custom labels in Prometheus. For instance the tag `env:production` will be exposed as a custome label `env="production"`. You can disable this by adding the query param `disableTagParsing=true`. Please note that Prometheus label names may only contain ASCII letters, numbers, as well as underscores (see the official [docs](https://prometheus.io/docs/concepts/data_model/)). Tags containing other characters in the label name will be sanitized.
{{</info>}}

{{<info>}}
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