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