ClickHouse/programs/client/clickhouse-client.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>

    <!-- 
        Settings adjustable via command-line parameters (see clickhouse-client --help)
        can take their defaults from that config file, see examples:

    <host>127.0.0.1</host>
    <port>9440</port>
    <secure>1</secure>
    <user>dbuser</user>
    <password>dbpwd123</password>
    <format>PrettyCompactMonoBlock</format>
    <multiline>1</multiline>
    <multiquery>1</multiquery>
    <stacktrace>1</stacktrace>
    <database>default2</database>
    <pager>less -SR</pager>
    <history_file>/home/user/clickhouse_custom_history.log</history_file>
    <max_parser_depth>2500</max_parser_depth>

        The same can be done on user-level configuration, just create & adjust: ~/.clickhouse-client/config.xml
    -->
</config>