libvirt-vagrant BPF 리눅스설정 ovs 도커 nvidia-smi 도커 레지스트리 ubuntu bpf_trace_printk kubeadm ovpn uprobe vagrant-libvirt localGPT openvSwitch yt-dlp ceph-osd nvcc dns ceph net-scripts 쿠버네티스 인증서 libvirt x509 vagrant klosedstack jaeger-ceph docker bind9 ebpf