ClickHouse/tests/integration/test_merge_tree_s3_failover/configs/config.xml

<clickhouse>
    <tcp_port>9000</tcp_port>
    <listen_host>127.0.0.1</listen_host>

    <openSSL>
        <client>
            <cacheSessions>true</cacheSessions>
            <verificationMode>none</verificationMode>
            <invalidCertificateHandler>
                <name>AcceptCertificateHandler</name>
            </invalidCertificateHandler>
        </client>
    </openSSL>

    <max_concurrent_queries>500</max_concurrent_queries>
    <path>./clickhouse/</path>
    <users_config>users.xml</users_config>
</clickhouse>