[ovirt-users] "engine-setup" 4.3.9 on fresh centos 7 install with PKI error

I'm newbie on oVirt - besides having many years on server administration, docker and vmware included. Installation is no mistery, but I'm stuck with error described below. I've just installed a new machine with Centos 7 with all updates: [root@mgmt ~]# uname -a Linux mgmt.simfrete.com 3.10.0-1062.12.1.el7.x86_64 #1 SMP Tue Feb 4 23:02:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux [root@mgmt ~]# cat /etc/redhat-release CentOS Linux release 7.7.1908 (Core) I've installed the repository: [root@mgmt ~]# sudo yum install https://resources.ovirt.org/pub/yum-repo/ovirt-release43.rpm -y and then the ovirt-engine: [root@mgmt ~]# yum install ovirt-engine -y Then, run the engine-setup with all defaults (exception fqdn = "mgmt.mydomain.com"). Everything runs smoothly, exception with I open the mamagement interface at "https://mgmt.mydomain.com/ovirt-engine" I get the error: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target In the log, I get 2020-03-23 02:20:23,883-03 ERROR [org.ovirt.engine.core.aaa.servlet.SsoPostLoginServlet] (default task-8) [] server_error: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target I don't know how to proceed from here. Would you please guide me how to fix this?