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