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