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