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