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