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docs: document json format #3313

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Oct 2, 2023
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docs: document json format #3313

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docs: document json format
Oct 2, 2023
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chore: format
Oct 2, 2023
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27 changes: 27 additions & 0 deletions docs/collecting-container-logs.md
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<!-- TOC -->

- [Collecting Container Logs](#collecting-container-logs)
- [Configuration](#configuration)
- [Multiline log parsing](#multiline-log-parsing)
- [Conditional multiline log parsing](#conditional-multiline-log-parsing)
- [Log format](#log-format)
- [json log format](#json-log-format)
- [fields log format](#fields-log-format)
- [json_merge log format](#json_merge-log-format)
- [text log format](#text-log-format)
- [Problem](#problem)
- [Resolution](#resolution)
- [Setting source name and other built-in metadata](#setting-source-name-and-other-built-in-metadata)
- [Filtering](#filtering)
- [Modifying log records](#modifying-log-records)
- [Adding custom fields](#adding-custom-fields)
- [Persistence](#persistence)
- [Advanced Configuration](#advanced-configuration)
- [Direct configuration](#direct-configuration)
- [Disabling container logs](#disabling-container-logs)
- [Using OTLP Source](#using-otlp-source)

<!-- /TOC -->

By default, log collection is enabled. This includes both container logs and systemd logs. This document covers container logs.
Expand Down Expand Up @@ -138,6 +159,12 @@ We're going to demonstrate the differences between them on two example log lines
{ "log_property": "value", "text": "I am a json log" }
```

#### `json` log format

`json` log format is an alias for `fields` log format.

See [`fields` log format](#fields-log-format)

#### `fields` log format

Logs formatted as `fields` are wrapped in a JSON object with additional properties, with the log body residing under the `log` key.
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