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