In case of Dynatrace Managed, the 443/tcp port (in recent versions, I think it is from v136) is handled by bundled NGINX. Settings in server’s config.properties are not applied for nginx.
Actually, it’s just a matter of adding:
To the config file /opt/dynatrace-managed/nginx/conf/nginx.conf and restart the nginx. Add the line after the existing ssl settings.
If you have a multinode cluster, you will have to do that on every node.
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