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