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