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