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