| => cat /etc/clickhouse-client/config.xml
<!-- Config set into /etc/clickhouse-client/. It's used if no other configs are found. -->
<config>
    <openSSL>
        <client> <!-- Used for connection to server's secure tcp port -->
            <loadDefaultCAFile>true</loadDefaultCAFile>
            <cacheSessions>true</cacheSessions>
            <disableProtocols>sslv2,sslv3</disableProtocols>
            <preferServerCiphers>true</preferServerCiphers>
            <!-- Use for self-signed: <verificationMode>none</verificationMode> -->
            <invalidCertificateHandler>
                <!-- Use for self-signed: <name>AcceptCertificateHandler</name> -->
                <name>RejectCertificateHandler</name>
            </invalidCertificateHandler>
        </client>
    </openSSL>
    <!--
        It's a custom prompt settings for the clickhouse-client
        Possible macros:
            {host}
            {port}
            {user}
            {database}
            {display_name}
        Terminal colors: https://misc.flogisoft.com/bash/tip_colors_and_formatting
        See also: https://wiki.hackzine.org/development/misc/readline-color-prompt.html
    -->
    <prompt_by_server_display_name>
        <default>{display_name} 🙂 </default>
        <test>{display_name} \x01\e[1;32m\x02:)\x01\e[0m\x02 </test> <!-- if it matched to the substring "test" in the server display name - -->
        <production>{display_name} \x01\e[1;31m\x02:)\x01\e[0m\x02 </production> <!-- if it matched to the substring "production" in the server display name -->
    </prompt_by_server_display_name>
</config>