[ovirt-users] Node upgrade issue

Hi everyone ! I am looking something about ovirt node upgrade . we are using a old version of ovirt node 3.1. Also I test ovirt node 3.5 . Somethings is puzzling me . 1, In ovirt node 3.1 , it seemed I can't upgrade ovirt node ,because of Hostvg's existence. In Hostvg , something like ssh keys are stored here, I know this is important . Is it possible to let the node inherit these things ? so that I can upgrade the node without remove things in hostvg . 2, I made a ovirt-node-iso 3.5 version myself . But when I try to install it , it fails because the issue of selinux . In shell mode , type "localectl" ,it shows this . after setenforce 0 , localectl will work well . -