[ovirt-users] Upgrade 4 --> 4.1 OVirt PKI problem

Hi, i've just upgraded to ovirt 4.1 but with some problem, in short ovirt regenerate all the pki infrastructure and now i've 2 problem : 1) If i start ovirt just after install, i can log in the GUI but all my host are unvailable with ssl communication problem. 2) If i restore my old "/etc/pki/ovirt-engine" my hosts seems to communicate (engine.log) but i can't connect to the GUI. I've this warning "sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target". Moreover i've running production vm on my host that i cannot poweroff. Someone have an idea? Thank you. Lionel