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Update logs-data-stream.md to include runtime fields compability issues #3517

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Oct 20, 2025
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Update logs-data-stream.md to include runtime fields compability issues #3517

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968120c
Update logs-data-stream.md to include runtime fields compability issues
philippkahr Oct 17, 2025
963a3d0
Update manage-data/data-store/data-streams/logs-data-stream.md
florent-leborgne Oct 17, 2025
6873210
Use sentence case in heading
leemthompo Oct 17, 2025
a6481d1
dot md
florent-leborgne Oct 17, 2025
804e1fe
no dot md after anchor t-t-t
florent-leborgne Oct 17, 2025
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Merge branch 'main' into philippkahr-patch-1
leemthompo Oct 20, 2025
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3 changes: 3 additions & 0 deletions manage-data/data-store/data-streams/logs-data-stream.md
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Expand Up @@ -188,3 +188,6 @@ The `logsdb` index mode uses the following settings:
## Upgrade to logsdb [upgrade-to-logsdb]

Starting with version `9.0`, `logsdb` index mode is automatically applied to data streams with names matching the pattern `logs-*-*`. This default applies to Elasticsearch instances created in version `9.0` or later, as well as older instances that had no data streams matching the pattern `logs-*-*`. For the latter, you can still [configure `logsdb` index mode manually](#how-to-use-logsds).

## Runtime fields [runtime-fields]
There are some compatibility issues with runtime fields which are commonly used within Rules for Elastic Security. Refer to [](/solutions/security/detect-and-alert/using-logsdb-index-mode-with-elastic-security.md#logsdb-runtime-fields) for more information.
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