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