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