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