> ## Documentation Index
> Fetch the complete documentation index at: https://developers.stellar.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Logging

> Stellar Core sends logs to standard error and stellar-core.log by default, configurable with the LOG_FILE_PATH field.

Stellar Core sends logs to standard error and `stellar-core.log` by default, configurable with the `LOG_FILE_PATH` field.

Log messages are classified by progressive *priority levels*: `TRACE`, `DEBUG`, `INFO`, `WARNING`, `ERROR`, and `FATAL`. The logging system only emits those messages at or above its configured logging level.

Log messages at different priority levels can be color-coded on standard error by setting `LOG_COLOR=true` in the config file. By default they are not color-coded.

The log level can be controlled by configuration, the `--ll` command-line flag, or adjusted dynamically by administrative (HTTP) commands. To do so, run:

```bash theme={"theme":{"light":"github-light","dark":"github-dark"}}
sudo -u stellar stellar-core --conf /etc/stellar/stellar-core.cfg http-command "ll?level=debug"
```

while your node is running.

Log levels can also be adjusted on a partition-by-partition basis through the administrative interface. For example the history system can be set to `DEBUG`-level logging by running:

```bash theme={"theme":{"light":"github-light","dark":"github-dark"}}
sudo -u stellar stellar-core --conf /etc/stellar/stellar-core.cfg http-command "ll?level=debug&partition=history"
```

Against a running system.

> [!NOTE]
>
> Please take a look at the \[HTTP Commands reference] for more information about the partitions available for use in the `ll` command.

The default log level is `INFO`, which is moderately verbose and should emit progress messages every few seconds under normal operation.

[HTTP Commands reference]: https://github.com/stellar/stellar-core/blob/master/docs/software/commands.md#http-commands