How to reconfigure Kaltura to work over https ? 443 port

It is possible to do this via /opt/kaltura/bin/kaltura-config-all.sh ?

Regards

Yes. But you first need to remove $BASE_DIR/app/base-config.lock so that you are reprompted.
In addition, when changing the CDN hostname, the kaltura.delivery_profile table must be updated.

# mysql -h$DB1_HOST -u$DB1_USER -p$DB1_PASS

mysql> select id,name,url,host_name from delivery_profile;

Then use update statements to reset the url.