--- sidebar_position: 54 sidebar_label: Server Configuration Parameters --- # Server Configuration Parameters This section contains descriptions of server settings that cannot be changed at the session or query level. These settings are stored in the `config.xml` file on the ClickHouse server. Other settings are described in the “[Settings](../../operations/settings/index.md#session-settings-intro)” section. Before studying the settings, read the [Configuration files](../../operations/configuration-files.md#configuration_files) section and note the use of substitutions (the `incl` and `optional` attributes). [Original article](https://clickhouse.com/docs/en/operations/server_configuration_parameters/)