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*: deprecate and remove telemetry #22961

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*: deprecate and remove telemetry
lilin90 May 28, 2026
c958a83
Potential fix for pull request finding
lilin90 May 28, 2026
87b94d8
Update telemetry version ranges and notes
lilin90 May 28, 2026
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6 changes: 4 additions & 2 deletions pd-configuration-file.md
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Expand Up @@ -542,9 +542,11 @@ Configuration items related to the [TiDB Dashboard](/dashboard/dashboard-intro.m

> **Warning:**
>
> Starting from v8.1.0, the telemetry feature in TiDB Dashboard is removed, and this configuration item is no longer functional. It is retained solely for compatibility with earlier versions.
> - For versions from v8.1.0 to v8.5.2, TiDB removes the telemetry feature and this configuration item no longer takes effect. It is retained solely for compatibility with earlier versions.
> - For versions from v8.5.3 to v8.5.6, TiDB reintroduces the telemetry feature. However, it only logs telemetry-related information locally and no longer sends data to PingCAP over the network.
> - Starting from v8.5.7, TiDB deprecates this configuration item and removes the telemetry feature again.

+ Before v8.1.0, this configuration item controls whether to enable telemetry collection in TiDB Dashboard.
+ Controls whether to enable telemetry collection in TiDB Dashboard.
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+ Default value: `false`

## `replication-mode`
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5 changes: 3 additions & 2 deletions system-variables.md
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Expand Up @@ -2907,8 +2907,9 @@ Query OK, 0 rows affected (0.09 sec)
> **Warning:**
>
> - For versions earlier than v8.1.0, TiDB periodically reports telemetry data to PingCAP.
> - For versions from v8.1.0 to v8.5.1, TiDB removes the telemetry feature and the `tidb_enable_telemetry` variable no longer takes effect. It is retained solely for compatibility with earlier versions.
> - Starting from v8.5.3, TiDB reintroduces the telemetry feature. However, it only logs telemetry-related information locally and no longer sends data to PingCAP over the network.
> - For versions from v8.1.0 to v8.5.2, TiDB removes the telemetry feature and the `tidb_enable_telemetry` variable no longer takes effect. It is retained solely for compatibility with earlier versions.
> - For versions from v8.5.3 to v8.5.6, TiDB reintroduces the telemetry feature. However, it only logs telemetry-related information locally and no longer sends data to PingCAP over the network.
> - Starting from v8.5.7, TiDB deprecates this system variable and removes the telemetry feature again.
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- Scope: GLOBAL
- Persists to cluster: Yes
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5 changes: 3 additions & 2 deletions telemetry.md
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Expand Up @@ -11,8 +11,9 @@ When the telemetry feature is enabled, TiUP collects usage information and share
> **Note:**
>
> - Starting from TiUP v1.11.3, the telemetry feature in TiUP is disabled by default, which means TiUP usage information is not collected by default. If you upgrade from a TiUP version earlier than v1.11.3 to v1.11.3 or a later version, the telemetry feature keeps the same status as before the upgrade.
> - For versions from v8.1.0 to v8.5.1, the telemetry feature in TiDB and TiDB Dashboard is removed.
> - Starting from v8.5.3, TiDB reintroduces the telemetry feature. However, it only logs telemetry-related information locally and no longer sends data to PingCAP over the network.
> - For versions from v8.1.0 to v8.5.2, the telemetry feature in TiDB and TiDB Dashboard is removed.
> - For versions from v8.5.3 to v8.5.6, TiDB reintroduces the telemetry feature. However, it only logs telemetry-related information locally and no longer sends data to PingCAP over the network.
> - Starting from v8.5.7, the telemetry feature in TiDB and TiDB Dashboard is removed again.

## What is shared when telemetry is enabled?

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5 changes: 3 additions & 2 deletions tidb-configuration-file.md
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Expand Up @@ -181,8 +181,9 @@ The TiDB configuration file supports more options than command-line parameters.

> **Warning:**
>
> - For versions from v8.1.0 to v8.5.1, TiDB removes the telemetry feature and this configuration item no longer takes effect. It is retained solely for compatibility with earlier versions.
> - Starting from v8.5.3, TiDB reintroduces the telemetry feature. However, it only logs telemetry-related information locally and no longer sends data to PingCAP over the network.
> - For versions from v8.1.0 to v8.5.2, TiDB removes the telemetry feature and this configuration item no longer takes effect. It is retained solely for compatibility with earlier versions.
> - For versions from v8.5.3 to v8.5.6, TiDB reintroduces the telemetry feature. However, it only logs telemetry-related information locally and no longer sends data to PingCAP over the network.
> - Starting from v8.5.7, TiDB deprecates this configuration item and removes the telemetry feature again.
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- Controls whether to enable telemetry collection in a TiDB instance.
- Default value: `false`
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