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