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