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