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