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