| | --- |
| | |
| | title: Logs environment variables |
| | description: Environment variables to configure logging and diagnostic data. |
| | contentType: reference |
| | tags: |
| | - environment variables |
| | hide: |
| | - toc |
| | - tags |
| | --- |
| | |
| | # Logs environment variables |
| |
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| | --8<-- "_snippets/self-hosting/file-based-configuration.md" |
| | |
| | This page lists environment variables to set up logging for debugging. Refer to [Logging in n8n](/hosting/logging-monitoring/logging.md) for details. |
| | |
| | ## n8n logs |
| | |
| | <!-- vale off --> |
| | | Variable | Type | Default | Description | |
| | | :------- | :---- | :------- | :---------- | |
| | | `N8N_LOG_LEVEL` | Enum string: `info`, `warn`, `error`, `debug` | `info` | Log output level. Refer to [Log levels](/hosting/logging-monitoring/logging.md#log-levels) for details. | |
| | | `N8N_LOG_OUTPUT` | Enum string: `console`, `file` | `console` | Where to output logs. Provide multiple values as a comma-separated list. | |
| | | `N8N_LOG_FORMAT` | Enum string: `text`, `json` | `text` | The log format to use. `text` prints human readable messages. `json` prints one JSON object per line containing the message, level, timestamp, and all metadata. This is useful for production monitoring as well as debugging. | |
| | | `N8N_LOG_FILE_COUNT_MAX` | Number | `100` | Max number of log files to keep. | |
| | | `N8N_LOG_FILE_SIZE_MAX` | Number | `16` | Max size of each log file in MB. | |
| | | `N8N_LOG_FILE_LOCATION` | String | `<n8n-directory-path>/logs/n8n.log` | Log file location. Requires N8N_LOG_OUTPUT set to `file`. | |
| | | `DB_LOGGING_ENABLED` | Boolean | `false` | Whether to enable database-specific logging. | |
| | | `DB_LOGGING_OPTIONS` | Enum string: `query`, `error`, `schema`, `warn`, `info`, `log` | `error` | Database log output level. To enable all logging, specify `all`. Refer to [TypeORM logging options](https://orkhan.gitbook.io/typeorm/docs/logging#logging-options){:target=_blank .external-link} | |
| | | `DB_LOGGING_MAX_EXECUTION_TIME` | Number | `1000` | Maximum execution time (in milliseconds) before n8n logs a warning. Set to `0` to disable long running query warning. | |
| | | `CODE_ENABLE_STDOUT` | Boolean | `false` | Set to `true` to send Code node logs to process's stdout for debugging, monitoring, or logging purposes. | |
| | | `NO_COLOR` | any | `undefined` | Set to any value to output logs without ANSI colors. For more information, see the [no-color.org website](https://no-color.org/){:target=_blank .external-link}. | |
| | <!-- vale on --> |
| | |
| | ## Log streaming |
| | |
| | Refer to [Log streaming](/log-streaming.md) for more information on this feature. |
| | |
| | | Variable | Type | Default | Description | |
| | | :------- | :---- | :------- | :---------- | |
| | | `N8N_EVENTBUS_CHECKUNSENTINTERVAL` | Number | `0` | How often (in milliseconds) to check for unsent event messages. Can in rare cases send message twice. Set to `0` to disable it. | |
| | | `N8N_EVENTBUS_LOGWRITER_SYNCFILEACCESS` | Boolean | `false` | Whether all file access happens synchronously within the thread (true) or not (false). | |
| | | `N8N_EVENTBUS_LOGWRITER_KEEPLOGCOUNT` | Number | `3` | Number of event log files to keep. | |
| | | `N8N_EVENTBUS_LOGWRITER_MAXFILESIZEINKB` | Number | `10240` | Maximum size (in kilo-bytes) of an event log file before a new one starts. | |
| | | `N8N_EVENTBUS_LOGWRITER_LOGBASENAME` | String | `n8nEventLog` | Basename of the event log file. | |
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