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