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