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