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