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