Hey @zhang ...did you do below part first? I just followed the sk in my R81.20 lab and worked like a charm. Once you do that, you will be able to add the extension in smart console, and it will give you cert warnings, but thats expected, since it will most likely have self-signed certificate.
Connect to your Security Management Server via SSH and run:
# service hcp_ext start
# hcp --ext-update-reports all
- You must run this command on every restart of the Security Management Server to collect a report from the newly created Security Gateway.
Andy