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