I have finally deployed Ussuri, it went quite good, except some my site specific issues and newton config files remake, but now I face issues when launching an instance.

[4] Here are logs from compute: /var/log/containers/nova/nova-compute.log

[5] from the controller - nova-conductor.log

According to errors from compute, something is wrong with kvm? 

some older bugs refer to kvm exec permissions [2]

a bit more recent [1] which refers to selinux issues, but I have setenforce 0 and tried to create instance, not much changed.

Also, [3] very interesting kvm.conf file updates suggested, but I am not sure, how to restart service since config changed, as I am BRAND new to container concept with docker/podman, bit more used to uml :) so, how to reload service in container (when container is running as non-root user)?

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1551651 # related to RHOSP7

[2] https://bugzilla.redhat.com/show_bug.cgi?id=1091710 # 6 year old.

[3] https://ask.openstack.org/en/question/95198/could-not-access-kvm-kernel-module-permission-deniednfailed-to-initialize-kvm/

[4] http://paste.openstack.org/show/pBVlVbaQGNuoRLHozHGO/

--