This needs to be mode 666 - there is a udev rule that does this:
[heat-admin@overcloud-novacomputebm-0 ~]$ rpm -qf /lib/udev/rules.d/80-kvm.rules qemu-kvm-ev-2.6.0-28.el7.10.1.x86_64 [heat-admin@overcloud-novacomputebm-0 ~]$ cat /lib/udev/rules.d/80-kvm.rules KERNEL=="kvm", GROUP="kvm", MODE="0666"
This needs to be mode 666 - there is a udev rule that does this:
[heat-admin@ overcloud- novacomputebm- 0 ~]$ rpm -qf /lib/udev/ rules.d/ 80-kvm. rules ev-2.6. 0-28.el7. 10.1.x86_ 64 overcloud- novacomputebm- 0 ~]$ cat /lib/udev/ rules.d/ 80-kvm. rules
qemu-kvm-
[heat-admin@
KERNEL=="kvm", GROUP="kvm", MODE="0666"