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