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