[ovirt-users] Could not connect to the optimizer service

Hi, I've just setup optimizer service following http://www.ovirt.org/develop/release-management/features/sla/optaplanner/ and https://github.com/oVirt/ovirt-optimizer I can access optimizer's interface and get the the solution result from both http and https. I can access it from both my pc and from ovirt-engine host with a browser at url ovirt-optimizer/result/Cluster_ID However in ovirt-engine interface I see Status: Could not connect to the optimizer service [status code: 0] Also I see no connection attempt from ovirt-engine to optimizer (with logging on optimizer's firewall). Engine is loading the conf: 2016-05-25 13:54:40,395 INFO [org.ovirt.engine.ui.frontend.server.gwt.plugin.PluginDataManager] (default task-20) [] Reading UI plugin configuration '/etc/ovirt-engine/ui-plugins/ovirt-optimizer-config.json' /etc/ovirt-engine/ui-plugins/ovirt-optimizer-config.json: "config": { "baseurl": "https://optimizer.example.com/ovirt-optimizer/result/" tried also "config": { "baseurl": "http://optimizer.example.com/ovirt-optimizer/result/" incase there was a problem with optimizer's certificate. Any ideas? How can I debug why the engine is not doing any attempt to get optimizer's result? best regards, Giannis