---
title: Rebuild the TSI index
description: Flush and rebuild the TSI index to purge corrupt index files or remove indexed data that is out of date.
url: https://docs.influxdata.com/influxdb/v2/admin/internals/tsi/rebuild-index/
estimated_tokens: 661
product: InfluxDB OSS v2
version: v2
publisher: InfluxData
canonical: https://docs.influxdata.com/influxdb/v2/admin/internals/tsi/rebuild-index/
date: '2023-09-12T23:33:31-06:00'
lastmod: '2023-09-12T23:33:31-06:00'
---

This page documents an earlier version of InfluxDB OSS.[InfluxDB 3 Core](/influxdb3/core/) is the latest stable version.

#### API token hashing is enabled by default in InfluxDB OSS 2.9.0

Stronger token security: tokens are stored as hashes on disk, so a
copy of the database file doesn’t expose usable tokens. Existing
tokens are hashed on first startup and the original strings can’t
be recovered afterward — **capture any plaintext tokens you still
need before you upgrade**.

For more information, see [Token hashing](/influxdb/v2/admin/tokens/#token-hashing).

In some cases, it may be necessary to flush and rebuild the TSI index.
For example, purging corrupt index files or removing outdated indexed data.

To rebuild your InfluxDB TSI index:

1. **Stop the InfluxDB (`influxd`) process**.

   Rebuilding the TSI index while the `influxd` is running could prevent some data
   from being queryable.

2. Navigate to the `data` directory in your[InfluxDB engine path](/influxdb/v2/reference/internals/file-system-layout/).*The engine path depends on your operating system or[custom engine path setting](/influxdb/v2/reference/config-options/#engine-path).*

   #### macOS & Linux ####

   ```
   cd ~/.influxdbv2/engine/data/
   ```

   ```
   cd -Path 'C:\%USERPROFILE%\.influxdbv2\engine\data\'
   ```

3. **Delete all `_series` directories in your InfluxDB `data` directory.**By default, `_series` directories are are stored at `/data/<bucket-id>/_series`,
   but check for and remove `_series` directories throughout the`data` directory.

   #### macOS & Linux ####

   ```
   find . -type d -name _series -exec -delete
   ```

   ```
   get-childitem -Include _series -Recurse -force | Remove-Item -Force -Recurse
   ```

4. **Delete all `index` directories.** By default, `index` directories are stored at`/data/<bucket-id>/autogen/<shard-id>/index`, but check for and remove`index` directories throughout the `data` directory.

   #### macOS & Linux ####

   ```
   find . -type d -name index -exec -delete
   ```

   ```
   get-childitem -Include index -Recurse -force | Remove-Item -Force -Recurse
   ```

5. Use the [`influxd inspect build-tsi` command](/influxdb/v2/reference/cli/influxd/inspect/build-tsi/)to rebuild the TSI index.

   ```
   influxd inspect build-tsi
   ```

#### Related

* [InfluxDB storage engine](/influxdb/v2/reference/internals/storage-engine/)
* [InfluxDB file system layout](/influxdb/v2/reference/internals/file-system-layout/)
* [influxd inspect build-tsi](/influxdb/v2/reference/cli/influxd/inspect/build-tsi/)

[storage](/influxdb/v2/tags/storage/)[internals](/influxdb/v2/tags/internals/)