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