Sorry, I wasn't clear.
You can do that (download an replace service and rewrite xmls) and keep
your existing service definition intact i.e.
    <service>
        <role>HDFSUI</role>
        <url>http://{DOMAIN}:50070</url>
    </service>

or
   1. You can create a new new folder
    /var/lib/knox/data-2.6.4.0-91/services/hdfsui/3.0.0/
   2. Copy the new service.xml and rewrite.xml files there (into 3.0.0)
   3. Now update your topology with the service definition as follows

    <service>
        <role>HDFSUI</role>
        <version>3.0.0</version>
        <url>http://{DOMAIN}:50070</url>
    </service>

Best,
Sandeep

On Tue, Jul 10, 2018 at 1:46 PM Lian Jiang <[EMAIL PROTECTED]> wrote: