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