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