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