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