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Susana Ferreira f93b91bfb5 Add configuration documentation generation tool (#7916) ... **What this PR does / why we need it**: Add a tool to generate configuration flags documentation based on the flags properties defined on registration on the code. This tool is based on the [Mimir doc generation tool](https://github.com/grafana/mimir/tree/main/tools/doc-generator) and adapted according to Loki configuration specifications. Prior to this PR, the configuration flags documentation was dispersed across two sources: * [_index.md](5550cd65ec/docs/sources/configuration/_index.md) * configuration flags registration in the code This meant that there was no single source of truth. In this PR, the previous `_index.md` file is replaced with the new file generated by the tool. The next step includes adding a CI step that validates if the _index.md file was generated according to the flags settings. This will be done in a follow-up PR. **NOTE:** this is not a documentation update PR. Apart from some minor typo fixes, the documentation changes on the code, were copied from the `_index.md` file. **Which issue(s) this PR fixes**: Fixes https://github.com/grafana/loki-private/issues/83 **Special notes for your reviewer**: Files: * [docs/sources/configuration/index.template](5550cd65ec/docs/sources/configuration/index.template): template used to generate the final configuration file * [/docs/sources/configuration/_index.md](c32e5d0acb/docs/sources/configuration/_index.md): file generated by tool * `loki/pkg` directory files updated with up-to-date documentation from `_index.md` file * [tools/doc-generator](5550cd65ec/tools/doc-generator) directory with documentation generation tool. **Checklist** - [ ] Reviewed the `CONTRIBUTING.md` guide - [ ] Documentation added - [ ] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md`		2 years ago
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exporter.go	only exports tenant limits which differ from defaults and export defa… (#4542)	4 years ago
exporter_test.go	only exports tenant limits which differ from defaults and export defa… (#4542)	4 years ago
limits.go	Add configuration documentation generation tool (#7916)	2 years ago
limits_test.go	Querier/Ruler: query blocker (#7785)	3 years ago
rate.go	Refactor per stream rate limit (#4213)	4 years ago
validate.go	exposes line length hist on distributors (#6309)	3 years ago