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