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