ClickHouse/tests/config/config.d/storage_conf.xml

<clickhouse>
    <storage_configuration>
        <disks>
            <s3_cache>
                <type>s3</type>
                <endpoint>http://localhost:11111/test/00170_test/</endpoint>
                <access_key_id>clickhouse</access_key_id>
                <secret_access_key>clickhouse</secret_access_key>
                <data_cache_enabled>1</data_cache_enabled>
                <cache_enabled>0</cache_enabled>
                <data_cache_max_size>22548578304</data_cache_max_size>
                <cache_on_write_operations>1</cache_on_write_operations>
                <data_cache_path>./s3_cache/</data_cache_path>
            </s3_cache>
            <s3_cache_2>
                <type>s3</type>
                <endpoint>http://localhost:11111/test/00170_test/</endpoint>
                <access_key_id>clickhouse</access_key_id>
                <secret_access_key>clickhouse</secret_access_key>
                <data_cache_enabled>1</data_cache_enabled>
                <cache_enabled>0</cache_enabled>
                <data_cache_max_size>22548578304</data_cache_max_size>
                <cache_on_write_operations>0</cache_on_write_operations>
            </s3_cache_2>
        </disks>
        <policies>
            <s3_cache>
                <volumes>
                    <main>
                        <disk>s3_cache</disk>
                    </main>
                </volumes>
            </s3_cache>
            <s3_cache_2>
                <volumes>
                    <main>
                        <disk>s3_cache_2</disk>
                    </main>
                </volumes>
            </s3_cache_2>
        </policies>
    </storage_configuration>
</clickhouse>