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