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