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