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