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