> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/sql-statements/administrative-sql-statements/replication-statements/reset-master.md).

# RESET MASTER

```sql
RESET MASTER [TO #]
```

Deletes all [binary log](/docs/server/server-management/server-monitoring-logs/binary-log.md) files listed in the index file, resets the binary log index file to be empty, and creates a new binary log file with a suffix of .000001.

If `TO #` is given, then the first new binary log file will start from number #.

This statement is for use only when the master is started for the first time and should never be used if any slaves are actively [replicating](/docs/server/ha-and-performance/standard-replication.md) from the binary log.

## See Also

* The [PURGE BINARY LOGS](/docs/server/reference/sql-statements/administrative-sql-statements/purge-binary-logs.md) statement is intended for use in active replication.

<sub>*This page is licensed: GPLv2, originally from*</sub> [<sub>*fill\_help\_tables.sql*</sub>](https://github.com/MariaDB/server/blob/main/scripts/fill_help_tables.sql)

{% @marketo/form formId="4316" %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://mariadb.com/docs/server/reference/sql-statements/administrative-sql-statements/replication-statements/reset-master.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
